initial commit

23 files changed, 7503 insertions, 674 deletions

diff --git a/FAQ b/FAQ
new file mode 100644
index 0000000..969b195
--- /dev/null
+++ b/FAQ
@@ -0,0 +1,250 @@
+## Why does st not handle utmp entries?
+
+Use the excellent tool of [utmp](https://git.suckless.org/utmp/) for this task.
+
+
+## Some _random program_ complains that st is unknown/not recognised/unsupported/whatever!
+
+It means that st doesn’t have any terminfo entry on your system. Chances are
+you did not `make install`. If you just want to test it without installing it,
+you can manually run `tic -sx st.info`.
+
+
+## Nothing works, and nothing is said about an unknown terminal!
+
+* Some programs just assume they’re running in xterm i.e. they don’t rely on
+  terminfo. What you see is the current state of the “xterm compliance”.
+* Some programs don’t complain about the lacking st description and default to
+  another terminal. In that case see the question about terminfo.
+
+
+## How do I scroll back up?
+
+* Using a terminal multiplexer.
+	* `st -e tmux` using C-b [
+	* `st -e screen` using C-a ESC
+* Using the excellent tool of [scroll](https://git.suckless.org/scroll/).
+* Using the scrollback [patch](https://st.suckless.org/patches/scrollback/).
+
+
+## I would like to have utmp and/or scroll functionality by default
+
+You can add the absolute path of both programs in your config.h file. You only
+have to modify the value of utmp and scroll variables.
+
+
+## Why doesn't the Del key work in some programs?
+
+Taken from the terminfo manpage:
+
+	If the terminal has a keypad that transmits codes when the keys
+	are pressed, this information can be given. Note that it is not
+	possible to handle terminals where the keypad only works in
+	local (this applies, for example, to the unshifted HP 2621 keys).
+	If the keypad can be set to transmit or not transmit, give these
+	codes as smkx and rmkx. Otherwise the keypad is assumed to
+	always transmit.
+
+In the st case smkx=E[?1hE= and rmkx=E[?1lE>, so it is mandatory that
+applications which want to test against keypad keys send these
+sequences.
+
+But buggy applications (like bash and irssi, for example) don't do this. A fast
+solution for them is to use the following command:
+
+	$ printf '\033[?1h\033=' >/dev/tty
+
+or
+	$ tput smkx
+
+In the case of bash, readline is used. Readline has a different note in its
+manpage about this issue:
+
+	enable-keypad (Off)
+		When set to On, readline will try to enable the
+		application keypad when it is called. Some systems
+		need this to enable arrow keys.
+
+Adding this option to your .inputrc will fix the keypad problem for all
+applications using readline.
+
+If you are using zsh, then read the zsh FAQ
+<http://zsh.sourceforge.net/FAQ/zshfaq03.html#l25>:
+
+	It should be noted that the O / [ confusion can occur with other keys
+	such as Home and End. Some systems let you query the key sequences
+	sent by these keys from the system's terminal database, terminfo.
+	Unfortunately, the key sequences given there typically apply to the
+	mode that is not the one zsh uses by default (it's the "application"
+	mode rather than the "raw" mode). Explaining the use of terminfo is
+	outside of the scope of this FAQ, but if you wish to use the key
+	sequences given there you can tell the line editor to turn on
+	"application" mode when it starts and turn it off when it stops:
+
+		function zle-line-init () { echoti smkx }
+		function zle-line-finish () { echoti rmkx }
+		zle -N zle-line-init
+		zle -N zle-line-finish
+
+Putting these lines into your .zshrc will fix the problems.
+
+
+## How can I use meta in 8bit mode?
+
+St supports meta in 8bit mode, but the default terminfo entry doesn't
+use this capability. If you want it, you have to use the 'st-meta' value
+in TERM.
+
+
+## I cannot compile st in OpenBSD
+
+OpenBSD lacks librt, despite it being mandatory in POSIX
+<http://pubs.opengroup.org/onlinepubs/9699919799/utilities/c99.html#tag_20_11_13>.
+If you want to compile st for OpenBSD you have to remove -lrt from config.mk, and
+st will compile without any loss of functionality, because all the functions are
+included in libc on this platform.
+
+
+## The Backspace Case
+
+St is emulating the Linux way of handling backspace being delete and delete being
+backspace.
+
+This is an issue that was discussed in suckless mailing list
+<https://lists.suckless.org/dev/1404/20697.html>. Here is why some old grumpy
+terminal users wants its backspace to be how he feels it:
+
+	Well, I am going to comment why I want to change the behaviour
+	of this key. When ASCII was defined in 1968, communication
+	with computers was done using punched cards, or hardcopy
+	terminals (basically a typewriter machine connected with the
+	computer using a serial port).  ASCII defines DELETE as 7F,
+	because, in punched-card terms, it means all the holes of the
+	card punched; it is thus a kind of 'physical delete'. In the
+	same way, the BACKSPACE key was a non-destructive backspace,
+	as on a typewriter.  So, if you wanted to delete a character,
+	you had to BACKSPACE and then DELETE.  Another use of BACKSPACE
+	was to type accented characters, for example 'a BACKSPACE `'.
+	The VT100 had no BACKSPACE key; it was generated using the
+	CONTROL key as another control character (CONTROL key sets to
+	0 b7 b6 b5, so it converts H (code 0x48) into BACKSPACE (code
+	0x08)), but it had a DELETE key in a similar position where
+	the BACKSPACE key is located today on common PC keyboards.
+	All the terminal emulators emulated the difference between
+	these keys correctly: the backspace key generated a BACKSPACE
+	(^H) and delete key generated a DELETE (^?).
+
+	But a problem arose when Linus Torvalds wrote Linux. Unlike
+	earlier terminals, the Linux virtual terminal (the terminal
+	emulator integrated in the kernel) returned a DELETE when
+	backspace was pressed, due to the VT100 having a DELETE key in
+	the same position.  This created a lot of problems (see [1]
+	and [2]). Since Linux has become the king, a lot of terminal
+	emulators today generate a DELETE when the backspace key is
+	pressed in order to avoid problems with Linux. The result is
+	that the only way of generating a BACKSPACE on these systems
+	is by using CONTROL + H. (I also think that emacs had an
+	important point here because the CONTROL + H prefix is used
+	in emacs in some commands (help commands).)
+
+	From point of view of the kernel, you can change the key
+	for deleting a previous character with stty erase. When you
+	connect a real terminal into a machine you describe the type
+	of terminal, so getty configures the correct value of stty
+	erase for this terminal. In the case of terminal emulators,
+	however, you don't have any getty that can set the correct
+	value of stty erase, so you always get the default value.
+	For this reason, it is necessary to add 'stty erase ^H' to your
+	profile if you have changed the value of the backspace key.
+	Of course, another solution is for st itself to modify the
+	value of stty erase.  I usually have the inverse problem:
+	when I connect to non-Unix machines, I have to press CONTROL +
+	h to get a BACKSPACE. The inverse problem occurs when a user
+	connects to my Unix machines from a different system with a
+	correct backspace key.
+
+	[1] http://www.ibb.net/~anne/keyboard.html
+	[2] http://www.tldp.org/HOWTO/Keyboard-and-Console-HOWTO-5.html
+
+
+## But I really want the old grumpy behaviour of my terminal
+
+Apply [1].
+
+[1] https://st.suckless.org/patches/delkey
+
+
+## Why do images not work in st using the w3m image hack?
+
+w3mimg uses a hack that draws an image on top of the terminal emulator Drawable
+window. The hack relies on the terminal to use a single buffer to draw its
+contents directly.
+
+st uses double-buffered drawing so the image is quickly replaced and may show a
+short flicker effect.
+
+Below is a patch example to change st double-buffering to a single Drawable
+buffer.
+
+diff --git a/x.c b/x.c
+--- a/x.c
++++ b/x.c
+@@ -732,10 +732,6 @@ xresize(int col, int row)
+ 	win.tw = col * win.cw;
+ 	win.th = row * win.ch;
+ 
+-	XFreePixmap(xw.dpy, xw.buf);
+-	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+-			DefaultDepth(xw.dpy, xw.scr));
+-	XftDrawChange(xw.draw, xw.buf);
+ 	xclear(0, 0, win.w, win.h);
+ 
+ 	/* resize to new width */
+@@ -1148,8 +1144,7 @@ xinit(int cols, int rows)
+ 	gcvalues.graphics_exposures = False;
+ 	dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
+ 			&gcvalues);
+-	xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
+-			DefaultDepth(xw.dpy, xw.scr));
++	xw.buf = xw.win;
+ 	XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
+ 	XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
+ 
+@@ -1632,8 +1627,6 @@ xdrawline(Line line, int x1, int y1, int x2)
+ void
+ xfinishdraw(void)
+ {
+-	XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
+-			win.h, 0, 0);
+ 	XSetForeground(xw.dpy, dc.gc,
+ 			dc.col[IS_SET(MODE_REVERSE)?
+ 				defaultfg : defaultbg].pixel);
+
+
+## BadLength X error in Xft when trying to render emoji
+
+Xft makes st crash when rendering color emojis with the following error:
+
+"X Error of failed request:  BadLength (poly request too large or internal Xlib length error)"
+  Major opcode of failed request:  139 (RENDER)
+  Minor opcode of failed request:  20 (RenderAddGlyphs)
+  Serial number of failed request: 1595
+  Current serial number in output stream:  1818"
+
+This is a known bug in Xft (not st) which happens on some platforms and
+combination of particular fonts and fontconfig settings.
+
+See also:
+https://gitlab.freedesktop.org/xorg/lib/libxft/issues/6
+https://bugs.freedesktop.org/show_bug.cgi?id=107534
+https://bugzilla.redhat.com/show_bug.cgi?id=1498269
+
+The solution is to remove color emoji fonts or disable this in the fontconfig
+XML configuration.  As an ugly workaround (which may work only on newer
+fontconfig versions (FC_COLOR)), the following code can be used to mask color
+fonts:
+
+	FcPatternAddBool(fcpattern, FC_COLOR, FcFalse);
+
+Please don't bother reporting this bug to st, but notify the upstream Xft
+developers about fixing this bug.
diff --git a/LEGACY b/LEGACY
new file mode 100644
index 0000000..bf28b1e
--- /dev/null
+++ b/LEGACY
@@ -0,0 +1,17 @@
+A STATEMENT ON LEGACY SUPPORT
+
+In the terminal world there is much cruft that comes from old and unsup‐
+ported terminals that inherit incompatible modes  and  escape  sequences
+which noone is able to know, except when he/she comes from that time and
+developed a graphical vt100 emulator at that time.
+
+One  goal  of  st is to only support what is really needed. When you en‐
+counter a sequence which you really need, implement it.  But  while  you
+are  at it,  do not add the other cruft you might encounter while sneek‐
+ing at other terminal emulators. History has bloated them and  there  is
+no real evidence that most of the sequences are used today.
+
+
+Christoph Lohmann <20h@r-36.net>
+2012-09-13T07:00:36.081271045+02:00
+
diff --git a/LICENSE b/LICENSE
index f288702..d80eb47 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,674 +1,34 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-                            Preamble
-
-  The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
-  The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works.  By contrast,
-the GNU General Public License is intended to guarantee your freedom to
-share and change all versions of a program--to make sure it remains free
-software for all its users.  We, the Free Software Foundation, use the
-GNU General Public License for most of our software; it applies also to
-any other work released this way by its authors.  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-  To protect your rights, we need to prevent others from denying you
-these rights or asking you to surrender the rights.  Therefore, you have
-certain responsibilities if you distribute copies of the software, or if
-you modify it: responsibilities to respect the freedom of others.
-
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must pass on to the recipients the same
-freedoms that you received.  You must make sure that they, too, receive
-or can get the source code.  And you must show them these terms so they
-know their rights.
-
-  Developers that use the GNU GPL protect your rights with two steps:
-(1) assert copyright on the software, and (2) offer you this License
-giving you legal permission to copy, distribute and/or modify it.
-
-  For the developers' and authors' protection, the GPL clearly explains
-that there is no warranty for this free software.  For both users' and
-authors' sake, the GPL requires that modified versions be marked as
-changed, so that their problems will not be attributed erroneously to
-authors of previous versions.
-
-  Some devices are designed to deny users access to install or run
-modified versions of the software inside them, although the manufacturer
-can do so.  This is fundamentally incompatible with the aim of
-protecting users' freedom to change the software.  The systematic
-pattern of such abuse occurs in the area of products for individuals to
-use, which is precisely where it is most unacceptable.  Therefore, we
-have designed this version of the GPL to prohibit the practice for those
-products.  If such problems arise substantially in other domains, we
-stand ready to extend this provision to those domains in future versions
-of the GPL, as needed to protect the freedom of users.
-
-  Finally, every program is threatened constantly by software patents.
-States should not allow patents to restrict development and use of
-software on general-purpose computers, but in those that do, we wish to
-avoid the special danger that patents applied to a free program could
-make it effectively proprietary.  To prevent this, the GPL assures that
-patents cannot be used to render the program non-free.
-
-  The precise terms and conditions for copying, distribution and
-modification follow.
-
-                       TERMS AND CONDITIONS
-
-  0. Definitions.
-
-  "This License" refers to version 3 of the GNU General Public License.
-
-  "Copyright" also means copyright-like laws that apply to other kinds of
-works, such as semiconductor masks.
-
-  "The Program" refers to any copyrightable work licensed under this
-License.  Each licensee is addressed as "you".  "Licensees" and
-"recipients" may be individuals or organizations.
-
-  To "modify" a work means to copy from or adapt all or part of the work
-in a fashion requiring copyright permission, other than the making of an
-exact copy.  The resulting work is called a "modified version" of the
-earlier work or a work "based on" the earlier work.
-
-  A "covered work" means either the unmodified Program or a work based
-on the Program.
-
-  To "propagate" a work means to do anything with it that, without
-permission, would make you directly or secondarily liable for
-infringement under applicable copyright law, except executing it on a
-computer or modifying a private copy.  Propagation includes copying,
-distribution (with or without modification), making available to the
-public, and in some countries other activities as well.
-
-  To "convey" a work means any kind of propagation that enables other
-parties to make or receive copies.  Mere interaction with a user through
-a computer network, with no transfer of a copy, is not conveying.
-
-  An interactive user interface displays "Appropriate Legal Notices"
-to the extent that it includes a convenient and prominently visible
-feature that (1) displays an appropriate copyright notice, and (2)
-tells the user that there is no warranty for the work (except to the
-extent that warranties are provided), that licensees may convey the
-work under this License, and how to view a copy of this License.  If
-the interface presents a list of user commands or options, such as a
-menu, a prominent item in the list meets this criterion.
-
-  1. Source Code.
-
-  The "source code" for a work means the preferred form of the work
-for making modifications to it.  "Object code" means any non-source
-form of a work.
-
-  A "Standard Interface" means an interface that either is an official
-standard defined by a recognized standards body, or, in the case of
-interfaces specified for a particular programming language, one that
-is widely used among developers working in that language.
-
-  The "System Libraries" of an executable work include anything, other
-than the work as a whole, that (a) is included in the normal form of
-packaging a Major Component, but which is not part of that Major
-Component, and (b) serves only to enable use of the work with that
-Major Component, or to implement a Standard Interface for which an
-implementation is available to the public in source code form.  A
-"Major Component", in this context, means a major essential component
-(kernel, window system, and so on) of the specific operating system
-(if any) on which the executable work runs, or a compiler used to
-produce the work, or an object code interpreter used to run it.
-
-  The "Corresponding Source" for a work in object code form means all
-the source code needed to generate, install, and (for an executable
-work) run the object code and to modify the work, including scripts to
-control those activities.  However, it does not include the work's
-System Libraries, or general-purpose tools or generally available free
-programs which are used unmodified in performing those activities but
-which are not part of the work.  For example, Corresponding Source
-includes interface definition files associated with source files for
-the work, and the source code for shared libraries and dynamically
-linked subprograms that the work is specifically designed to require,
-such as by intimate data communication or control flow between those
-subprograms and other parts of the work.
-
-  The Corresponding Source need not include anything that users
-can regenerate automatically from other parts of the Corresponding
-Source.
-
-  The Corresponding Source for a work in source code form is that
-same work.
-
-  2. Basic Permissions.
-
-  All rights granted under this License are granted for the term of
-copyright on the Program, and are irrevocable provided the stated
-conditions are met.  This License explicitly affirms your unlimited
-permission to run the unmodified Program.  The output from running a
-covered work is covered by this License only if the output, given its
-content, constitutes a covered work.  This License acknowledges your
-rights of fair use or other equivalent, as provided by copyright law.
-
-  You may make, run and propagate covered works that you do not
-convey, without conditions so long as your license otherwise remains
-in force.  You may convey covered works to others for the sole purpose
-of having them make modifications exclusively for you, or provide you
-with facilities for running those works, provided that you comply with
-the terms of this License in conveying all material for which you do
-not control copyright.  Those thus making or running the covered works
-for you must do so exclusively on your behalf, under your direction
-and control, on terms that prohibit them from making any copies of
-your copyrighted material outside their relationship with you.
-
-  Conveying under any other circumstances is permitted solely under
-the conditions stated below.  Sublicensing is not allowed; section 10
-makes it unnecessary.
-
-  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
-
-  No covered work shall be deemed part of an effective technological
-measure under any applicable law fulfilling obligations under article
-11 of the WIPO copyright treaty adopted on 20 December 1996, or
-similar laws prohibiting or restricting circumvention of such
-measures.
-
-  When you convey a covered work, you waive any legal power to forbid
-circumvention of technological measures to the extent such circumvention
-is effected by exercising rights under this License with respect to
-the covered work, and you disclaim any intention to limit operation or
-modification of the work as a means of enforcing, against the work's
-users, your or third parties' legal rights to forbid circumvention of
-technological measures.
-
-  4. Conveying Verbatim Copies.
-
-  You may convey verbatim copies of the Program's source code as you
-receive it, in any medium, provided that you conspicuously and
-appropriately publish on each copy an appropriate copyright notice;
-keep intact all notices stating that this License and any
-non-permissive terms added in accord with section 7 apply to the code;
-keep intact all notices of the absence of any warranty; and give all
-recipients a copy of this License along with the Program.
-
-  You may charge any price or no price for each copy that you convey,
-and you may offer support or warranty protection for a fee.
-
-  5. Conveying Modified Source Versions.
-
-  You may convey a work based on the Program, or the modifications to
-produce it from the Program, in the form of source code under the
-terms of section 4, provided that you also meet all of these conditions:
-
-    a) The work must carry prominent notices stating that you modified
-    it, and giving a relevant date.
-
-    b) The work must carry prominent notices stating that it is
-    released under this License and any conditions added under section
-    7.  This requirement modifies the requirement in section 4 to
-    "keep intact all notices".
-
-    c) You must license the entire work, as a whole, under this
-    License to anyone who comes into possession of a copy.  This
-    License will therefore apply, along with any applicable section 7
-    additional terms, to the whole of the work, and all its parts,
-    regardless of how they are packaged.  This License gives no
-    permission to license the work in any other way, but it does not
-    invalidate such permission if you have separately received it.
-
-    d) If the work has interactive user interfaces, each must display
-    Appropriate Legal Notices; however, if the Program has interactive
-    interfaces that do not display Appropriate Legal Notices, your
-    work need not make them do so.
-
-  A compilation of a covered work with other separate and independent
-works, which are not by their nature extensions of the covered work,
-and which are not combined with it such as to form a larger program,
-in or on a volume of a storage or distribution medium, is called an
-"aggregate" if the compilation and its resulting copyright are not
-used to limit the access or legal rights of the compilation's users
-beyond what the individual works permit.  Inclusion of a covered work
-in an aggregate does not cause this License to apply to the other
-parts of the aggregate.
-
-  6. Conveying Non-Source Forms.
-
-  You may convey a covered work in object code form under the terms
-of sections 4 and 5, provided that you also convey the
-machine-readable Corresponding Source under the terms of this License,
-in one of these ways:
-
-    a) Convey the object code in, or embodied in, a physical product
-    (including a physical distribution medium), accompanied by the
-    Corresponding Source fixed on a durable physical medium
-    customarily used for software interchange.
-
-    b) Convey the object code in, or embodied in, a physical product
-    (including a physical distribution medium), accompanied by a
-    written offer, valid for at least three years and valid for as
-    long as you offer spare parts or customer support for that product
-    model, to give anyone who possesses the object code either (1) a
-    copy of the Corresponding Source for all the software in the
-    product that is covered by this License, on a durable physical
-    medium customarily used for software interchange, for a price no
-    more than your reasonable cost of physically performing this
-    conveying of source, or (2) access to copy the
-    Corresponding Source from a network server at no charge.
-
-    c) Convey individual copies of the object code with a copy of the
-    written offer to provide the Corresponding Source.  This
-    alternative is allowed only occasionally and noncommercially, and
-    only if you received the object code with such an offer, in accord
-    with subsection 6b.
-
-    d) Convey the object code by offering access from a designated
-    place (gratis or for a charge), and offer equivalent access to the
-    Corresponding Source in the same way through the same place at no
-    further charge.  You need not require recipients to copy the
-    Corresponding Source along with the object code.  If the place to
-    copy the object code is a network server, the Corresponding Source
-    may be on a different server (operated by you or a third party)
-    that supports equivalent copying facilities, provided you maintain
-    clear directions next to the object code saying where to find the
-    Corresponding Source.  Regardless of what server hosts the
-    Corresponding Source, you remain obligated to ensure that it is
-    available for as long as needed to satisfy these requirements.
-
-    e) Convey the object code using peer-to-peer transmission, provided
-    you inform other peers where the object code and Corresponding
-    Source of the work are being offered to the general public at no
-    charge under subsection 6d.
-
-  A separable portion of the object code, whose source code is excluded
-from the Corresponding Source as a System Library, need not be
-included in conveying the object code work.
-
-  A "User Product" is either (1) a "consumer product", which means any
-tangible personal property which is normally used for personal, family,
-or household purposes, or (2) anything designed or sold for incorporation
-into a dwelling.  In determining whether a product is a consumer product,
-doubtful cases shall be resolved in favor of coverage.  For a particular
-product received by a particular user, "normally used" refers to a
-typical or common use of that class of product, regardless of the status
-of the particular user or of the way in which the particular user
-actually uses, or expects or is expected to use, the product.  A product
-is a consumer product regardless of whether the product has substantial
-commercial, industrial or non-consumer uses, unless such uses represent
-the only significant mode of use of the product.
-
-  "Installation Information" for a User Product means any methods,
-procedures, authorization keys, or other information required to install
-and execute modified versions of a covered work in that User Product from
-a modified version of its Corresponding Source.  The information must
-suffice to ensure that the continued functioning of the modified object
-code is in no case prevented or interfered with solely because
-modification has been made.
-
-  If you convey an object code work under this section in, or with, or
-specifically for use in, a User Product, and the conveying occurs as
-part of a transaction in which the right of possession and use of the
-User Product is transferred to the recipient in perpetuity or for a
-fixed term (regardless of how the transaction is characterized), the
-Corresponding Source conveyed under this section must be accompanied
-by the Installation Information.  But this requirement does not apply
-if neither you nor any third party retains the ability to install
-modified object code on the User Product (for example, the work has
-been installed in ROM).
-
-  The requirement to provide Installation Information does not include a
-requirement to continue to provide support service, warranty, or updates
-for a work that has been modified or installed by the recipient, or for
-the User Product in which it has been modified or installed.  Access to a
-network may be denied when the modification itself materially and
-adversely affects the operation of the network or violates the rules and
-protocols for communication across the network.
-
-  Corresponding Source conveyed, and Installation Information provided,
-in accord with this section must be in a format that is publicly
-documented (and with an implementation available to the public in
-source code form), and must require no special password or key for
-unpacking, reading or copying.
-
-  7. Additional Terms.
-
-  "Additional permissions" are terms that supplement the terms of this
-License by making exceptions from one or more of its conditions.
-Additional permissions that are applicable to the entire Program shall
-be treated as though they were included in this License, to the extent
-that they are valid under applicable law.  If additional permissions
-apply only to part of the Program, that part may be used separately
-under those permissions, but the entire Program remains governed by
-this License without regard to the additional permissions.
-
-  When you convey a copy of a covered work, you may at your option
-remove any additional permissions from that copy, or from any part of
-it.  (Additional permissions may be written to require their own
-removal in certain cases when you modify the work.)  You may place
-additional permissions on material, added by you to a covered work,
-for which you have or can give appropriate copyright permission.
-
-  Notwithstanding any other provision of this License, for material you
-add to a covered work, you may (if authorized by the copyright holders of
-that material) supplement the terms of this License with terms:
-
-    a) Disclaiming warranty or limiting liability differently from the
-    terms of sections 15 and 16 of this License; or
-
-    b) Requiring preservation of specified reasonable legal notices or
-    author attributions in that material or in the Appropriate Legal
-    Notices displayed by works containing it; or
-
-    c) Prohibiting misrepresentation of the origin of that material, or
-    requiring that modified versions of such material be marked in
-    reasonable ways as different from the original version; or
-
-    d) Limiting the use for publicity purposes of names of licensors or
-    authors of the material; or
-
-    e) Declining to grant rights under trademark law for use of some
-    trade names, trademarks, or service marks; or
-
-    f) Requiring indemnification of licensors and authors of that
-    material by anyone who conveys the material (or modified versions of
-    it) with contractual assumptions of liability to the recipient, for
-    any liability that these contractual assumptions directly impose on
-    those licensors and authors.
-
-  All other non-permissive additional terms are considered "further
-restrictions" within the meaning of section 10.  If the Program as you
-received it, or any part of it, contains a notice stating that it is
-governed by this License along with a term that is a further
-restriction, you may remove that term.  If a license document contains
-a further restriction but permits relicensing or conveying under this
-License, you may add to a covered work material governed by the terms
-of that license document, provided that the further restriction does
-not survive such relicensing or conveying.
-
-  If you add terms to a covered work in accord with this section, you
-must place, in the relevant source files, a statement of the
-additional terms that apply to those files, or a notice indicating
-where to find the applicable terms.
-
-  Additional terms, permissive or non-permissive, may be stated in the
-form of a separately written license, or stated as exceptions;
-the above requirements apply either way.
-
-  8. Termination.
-
-  You may not propagate or modify a covered work except as expressly
-provided under this License.  Any attempt otherwise to propagate or
-modify it is void, and will automatically terminate your rights under
-this License (including any patent licenses granted under the third
-paragraph of section 11).
-
-  However, if you cease all violation of this License, then your
-license from a particular copyright holder is reinstated (a)
-provisionally, unless and until the copyright holder explicitly and
-finally terminates your license, and (b) permanently, if the copyright
-holder fails to notify you of the violation by some reasonable means
-prior to 60 days after the cessation.
-
-  Moreover, your license from a particular copyright holder is
-reinstated permanently if the copyright holder notifies you of the
-violation by some reasonable means, this is the first time you have
-received notice of violation of this License (for any work) from that
-copyright holder, and you cure the violation prior to 30 days after
-your receipt of the notice.
-
-  Termination of your rights under this section does not terminate the
-licenses of parties who have received copies or rights from you under
-this License.  If your rights have been terminated and not permanently
-reinstated, you do not qualify to receive new licenses for the same
-material under section 10.
-
-  9. Acceptance Not Required for Having Copies.
-
-  You are not required to accept this License in order to receive or
-run a copy of the Program.  Ancillary propagation of a covered work
-occurring solely as a consequence of using peer-to-peer transmission
-to receive a copy likewise does not require acceptance.  However,
-nothing other than this License grants you permission to propagate or
-modify any covered work.  These actions infringe copyright if you do
-not accept this License.  Therefore, by modifying or propagating a
-covered work, you indicate your acceptance of this License to do so.
-
-  10. Automatic Licensing of Downstream Recipients.
-
-  Each time you convey a covered work, the recipient automatically
-receives a license from the original licensors, to run, modify and
-propagate that work, subject to this License.  You are not responsible
-for enforcing compliance by third parties with this License.
-
-  An "entity transaction" is a transaction transferring control of an
-organization, or substantially all assets of one, or subdividing an
-organization, or merging organizations.  If propagation of a covered
-work results from an entity transaction, each party to that
-transaction who receives a copy of the work also receives whatever
-licenses to the work the party's predecessor in interest had or could
-give under the previous paragraph, plus a right to possession of the
-Corresponding Source of the work from the predecessor in interest, if
-the predecessor has it or can get it with reasonable efforts.
-
-  You may not impose any further restrictions on the exercise of the
-rights granted or affirmed under this License.  For example, you may
-not impose a license fee, royalty, or other charge for exercise of
-rights granted under this License, and you may not initiate litigation
-(including a cross-claim or counterclaim in a lawsuit) alleging that
-any patent claim is infringed by making, using, selling, offering for
-sale, or importing the Program or any portion of it.
-
-  11. Patents.
-
-  A "contributor" is a copyright holder who authorizes use under this
-License of the Program or a work on which the Program is based.  The
-work thus licensed is called the contributor's "contributor version".
-
-  A contributor's "essential patent claims" are all patent claims
-owned or controlled by the contributor, whether already acquired or
-hereafter acquired, that would be infringed by some manner, permitted
-by this License, of making, using, or selling its contributor version,
-but do not include claims that would be infringed only as a
-consequence of further modification of the contributor version.  For
-purposes of this definition, "control" includes the right to grant
-patent sublicenses in a manner consistent with the requirements of
-this License.
-
-  Each contributor grants you a non-exclusive, worldwide, royalty-free
-patent license under the contributor's essential patent claims, to
-make, use, sell, offer for sale, import and otherwise run, modify and
-propagate the contents of its contributor version.
-
-  In the following three paragraphs, a "patent license" is any express
-agreement or commitment, however denominated, not to enforce a patent
-(such as an express permission to practice a patent or covenant not to
-sue for patent infringement).  To "grant" such a patent license to a
-party means to make such an agreement or commitment not to enforce a
-patent against the party.
-
-  If you convey a covered work, knowingly relying on a patent license,
-and the Corresponding Source of the work is not available for anyone
-to copy, free of charge and under the terms of this License, through a
-publicly available network server or other readily accessible means,
-then you must either (1) cause the Corresponding Source to be so
-available, or (2) arrange to deprive yourself of the benefit of the
-patent license for this particular work, or (3) arrange, in a manner
-consistent with the requirements of this License, to extend the patent
-license to downstream recipients.  "Knowingly relying" means you have
-actual knowledge that, but for the patent license, your conveying the
-covered work in a country, or your recipient's use of the covered work
-in a country, would infringe one or more identifiable patents in that
-country that you have reason to believe are valid.
-
-  If, pursuant to or in connection with a single transaction or
-arrangement, you convey, or propagate by procuring conveyance of, a
-covered work, and grant a patent license to some of the parties
-receiving the covered work authorizing them to use, propagate, modify
-or convey a specific copy of the covered work, then the patent license
-you grant is automatically extended to all recipients of the covered
-work and works based on it.
-
-  A patent license is "discriminatory" if it does not include within
-the scope of its coverage, prohibits the exercise of, or is
-conditioned on the non-exercise of one or more of the rights that are
-specifically granted under this License.  You may not convey a covered
-work if you are a party to an arrangement with a third party that is
-in the business of distributing software, under which you make payment
-to the third party based on the extent of your activity of conveying
-the work, and under which the third party grants, to any of the
-parties who would receive the covered work from you, a discriminatory
-patent license (a) in connection with copies of the covered work
-conveyed by you (or copies made from those copies), or (b) primarily
-for and in connection with specific products or compilations that
-contain the covered work, unless you entered into that arrangement,
-or that patent license was granted, prior to 28 March 2007.
-
-  Nothing in this License shall be construed as excluding or limiting
-any implied license or other defenses to infringement that may
-otherwise be available to you under applicable patent law.
-
-  12. No Surrender of Others' Freedom.
-
-  If conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot convey a
-covered work so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you may
-not convey it at all.  For example, if you agree to terms that obligate you
-to collect a royalty for further conveying from those to whom you convey
-the Program, the only way you could satisfy both those terms and this
-License would be to refrain entirely from conveying the Program.
-
-  13. Use with the GNU Affero General Public License.
-
-  Notwithstanding any other provision of this License, you have
-permission to link or combine any covered work with a work licensed
-under version 3 of the GNU Affero General Public License into a single
-combined work, and to convey the resulting work.  The terms of this
-License will continue to apply to the part which is the covered work,
-but the special requirements of the GNU Affero General Public License,
-section 13, concerning interaction through a network will apply to the
-combination as such.
-
-  14. Revised Versions of this License.
-
-  The Free Software Foundation may publish revised and/or new versions of
-the GNU General Public License from time to time.  Such new versions will
-be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
-
-  Each version is given a distinguishing version number.  If the
-Program specifies that a certain numbered version of the GNU General
-Public License "or any later version" applies to it, you have the
-option of following the terms and conditions either of that numbered
-version or of any later version published by the Free Software
-Foundation.  If the Program does not specify a version number of the
-GNU General Public License, you may choose any version ever published
-by the Free Software Foundation.
-
-  If the Program specifies that a proxy can decide which future
-versions of the GNU General Public License can be used, that proxy's
-public statement of acceptance of a version permanently authorizes you
-to choose that version for the Program.
-
-  Later license versions may give you additional or different
-permissions.  However, no additional obligations are imposed on any
-author or copyright holder as a result of your choosing to follow a
-later version.
-
-  15. Disclaimer of Warranty.
-
-  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
-OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
-THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
-IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
-ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
-
-  16. Limitation of Liability.
-
-  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
-THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
-GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
-USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
-DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
-PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
-EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
-SUCH DAMAGES.
-
-  17. Interpretation of Sections 15 and 16.
-
-  If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
-                     END OF TERMS AND CONDITIONS
-
-            How to Apply These Terms to Your New Programs
-
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-state the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) <year>  <name of author>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-Also add information on how to contact you by electronic and paper mail.
-
-  If the program does terminal interaction, make it output a short
-notice like this when it starts in an interactive mode:
-
-    <program>  Copyright (C) <year>  <name of author>
-    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-    This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, your program's commands
-might be different; for a GUI interface, you would use an "about box".
-
-  You should also get your employer (if you work as a programmer) or school,
-if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU GPL, see
-<https://www.gnu.org/licenses/>.
-
-  The GNU General Public License does not permit incorporating your program
-into proprietary programs.  If your program is a subroutine library, you
-may consider it more useful to permit linking proprietary applications with
-the library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.  But first, please read
-<https://www.gnu.org/licenses/why-not-lgpl.html>.
+MIT/X Consortium License
+
+© 2014-2020 Hiltjo Posthuma <hiltjo at codemadness dot org>
+© 2018 Devin J. Pohly <djpohly at gmail dot com>
+© 2014-2017 Quentin Rameau <quinq at fifth dot space>
+© 2009-2012 Aurélien APTEL <aurelien dot aptel at gmail dot com>
+© 2008-2017 Anselm R Garbe <garbeam at gmail dot com>
+© 2012-2017 Roberto E. Vargas Caballero <k0ga at shike2 dot com>
+© 2012-2016 Christoph Lohmann <20h at r-36 dot net>
+© 2013 Eon S. Jeon <esjeon at hyunmu dot am>
+© 2013 Alexander Sedov <alex0player at gmail dot com>
+© 2013 Mark Edgar <medgar123 at gmail dot com>
+© 2013-2014 Eric Pruitt <eric.pruitt at gmail dot com>
+© 2013 Michael Forney <mforney at mforney dot org>
+© 2013-2014 Markus Teich <markus dot teich at stusta dot mhn dot de>
+© 2014-2015 Laslo Hunhold <dev at frign dot de>
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..470ac86
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,57 @@
+# st - simple terminal
+# See LICENSE file for copyright and license details.
+.POSIX:
+
+include config.mk
+
+SRC = st.c x.c
+OBJ = $(SRC:.c=.o)
+
+all: options st
+
+options:
+	@echo st build options:
+	@echo "CFLAGS  = $(STCFLAGS)"
+	@echo "LDFLAGS = $(STLDFLAGS)"
+	@echo "CC      = $(CC)"
+
+config.h:
+	cp config.def.h config.h
+
+.c.o:
+	$(CC) $(STCFLAGS) -c $<
+
+st.o: config.h st.h win.h
+x.o: arg.h config.h st.h win.h
+
+$(OBJ): config.h config.mk
+
+st: $(OBJ)
+	$(CC) -o $@ $(OBJ) $(STLDFLAGS)
+
+clean:
+	rm -f st $(OBJ) st-$(VERSION).tar.gz
+
+dist: clean
+	mkdir -p st-$(VERSION)
+	cp -R FAQ LEGACY TODO LICENSE Makefile README config.mk\
+		config.def.h st.info st.1 arg.h st.h win.h $(SRC)\
+		st-$(VERSION)
+	tar -cf - st-$(VERSION) | gzip > st-$(VERSION).tar.gz
+	rm -rf st-$(VERSION)
+
+install: st
+	mkdir -p $(DESTDIR)$(PREFIX)/bin
+	cp -f st $(DESTDIR)$(PREFIX)/bin
+	chmod 755 $(DESTDIR)$(PREFIX)/bin/st
+	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
+	sed "s/VERSION/$(VERSION)/g" < st.1 > $(DESTDIR)$(MANPREFIX)/man1/st.1
+	chmod 644 $(DESTDIR)$(MANPREFIX)/man1/st.1
+	tic -sx st.info
+	@echo Please see the README file regarding the terminfo entry of st.
+
+uninstall:
+	rm -f $(DESTDIR)$(PREFIX)/bin/st
+	rm -f $(DESTDIR)$(MANPREFIX)/man1/st.1
+
+.PHONY: all options clean dist install uninstall
diff --git a/README b/README
new file mode 100644
index 0000000..6a846ed
--- /dev/null
+++ b/README
@@ -0,0 +1,34 @@
+st - simple terminal
+--------------------
+st is a simple terminal emulator for X which sucks less.
+
+
+Requirements
+------------
+In order to build st you need the Xlib header files.
+
+
+Installation
+------------
+Edit config.mk to match your local setup (st is installed into
+the /usr/local namespace by default).
+
+Afterwards enter the following command to build and install st (if
+necessary as root):
+
+    make clean install
+
+
+Running st
+----------
+If you did not install st with make clean install, you must compile
+the st terminfo entry with the following command:
+
+    tic -sx st.info
+
+See the man page for additional details.
+
+Credits
+-------
+Based on Aurélien APTEL <aurelien dot aptel at gmail dot com> bt source code.
+
diff --git a/TODO b/TODO
new file mode 100644
index 0000000..5f74cd5
--- /dev/null
+++ b/TODO
@@ -0,0 +1,28 @@
+vt emulation
+------------
+
+* double-height support
+
+code & interface
+----------------
+
+* add a simple way to do multiplexing
+
+drawing
+-------
+* add diacritics support to xdraws()
+	* switch to a suckless font drawing library
+* make the font cache simpler
+* add better support for brightening of the upper colors
+
+bugs
+----
+
+* fix shift up/down (shift selection in emacs)
+* remove DEC test sequence when appropriate
+
+misc
+----
+
+    $ grep -nE 'XXX|TODO' st.c
+
diff --git a/arg.h b/arg.h
new file mode 100644
index 0000000..a22e019
--- /dev/null
+++ b/arg.h
@@ -0,0 +1,50 @@
+/*
+ * Copy me if you can.
+ * by 20h
+ */
+
+#ifndef ARG_H__
+#define ARG_H__
+
+extern char *argv0;
+
+/* use main(int argc, char *argv[]) */
+#define ARGBEGIN	for (argv0 = *argv, argv++, argc--;\
+					argv[0] && argv[0][0] == '-'\
+					&& argv[0][1];\
+					argc--, argv++) {\
+				char argc_;\
+				char **argv_;\
+				int brk_;\
+				if (argv[0][1] == '-' && argv[0][2] == '\0') {\
+					argv++;\
+					argc--;\
+					break;\
+				}\
+				int i_;\
+				for (i_ = 1, brk_ = 0, argv_ = argv;\
+						argv[0][i_] && !brk_;\
+						i_++) {\
+					if (argv_ != argv)\
+						break;\
+					argc_ = argv[0][i_];\
+					switch (argc_)
+
+#define ARGEND			}\
+			}
+
+#define ARGC()		argc_
+
+#define EARGF(x)	((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
+				((x), abort(), (char *)0) :\
+				(brk_ = 1, (argv[0][i_+1] != '\0')?\
+					(&argv[0][i_+1]) :\
+					(argc--, argv++, argv[0])))
+
+#define ARGF()		((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
+				(char *)0 :\
+				(brk_ = 1, (argv[0][i_+1] != '\0')?\
+					(&argv[0][i_+1]) :\
+					(argc--, argv++, argv[0])))
+
+#endif
diff --git a/config.def.h b/config.def.h
new file mode 100644
index 0000000..c807a32
--- /dev/null
+++ b/config.def.h
@@ -0,0 +1,507 @@
+/* See LICENSE file for copyright and license details. */
+
+/*
+ * appearance
+ *
+ * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
+ */
+static char font[] =
+    "DejaVuSansMono Nerd Font Mono:pixelsize=14:antialias=true;autohint=true";
+/* Spare fonts */
+static char *font2[] = {
+    "Inconsolata for Powerline:pixelsize=12:antialias=true:autohint=true",
+    "Hack Nerd Font Mono:pixelsize=11:antialias=true:autohint=true",
+};
+static int borderpx = 2;
+
+/*
+ * What program is execed by st depends of these precedence rules:
+ * 1: program passed with -e
+ * 2: scroll and/or utmp
+ * 3: SHELL environment variable
+ * 4: value of shell in /etc/passwd
+ * 5: value of shell in config.h
+ */
+static char *shell = "/bin/sh";
+char *utmp = NULL;
+/* scroll program: to enable use a string like "scroll" */
+char *scroll = NULL;
+char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400";
+
+/* identification sequence returned in DA and DECID */
+char *vtiden = "\033[?6c";
+
+/* Kerning / character bounding-box multipliers */
+static float cwscale = 1.0;
+static float chscale = 1.0;
+
+/*
+ * word delimiter string
+ *
+ * More advanced example: L" `'\"()[]{}"
+ */
+wchar_t *worddelimiters = L" ";
+
+/* selection timeouts (in milliseconds) */
+static unsigned int doubleclicktimeout = 300;
+static unsigned int tripleclicktimeout = 600;
+
+/* alt screens */
+int allowaltscreen = 1;
+
+/* allow certain non-interactive (insecure) window operations such as:
+   setting the clipboard text */
+int allowwindowops = 0;
+
+/*
+ * draw latency range in ms - from new content/keypress/etc until drawing.
+ * within this range, st draws when content stops arriving (idle). mostly it's
+ * near minlatency, but it waits longer for slow updates to avoid partial draw.
+ * low minlatency will tear/flicker more, as it can "detect" idle too early.
+ */
+static double minlatency = 8;
+static double maxlatency = 33;
+
+/*
+ * blinking timeout (set to 0 to disable blinking) for the terminal blinking
+ * attribute.
+ */
+static unsigned int blinktimeout = 800;
+
+/*
+ * thickness of underline and bar cursors
+ */
+static unsigned int cursorthickness = 2;
+
+/*
+ * bell volume. It must be a value between -100 and 100. Use 0 for disabling
+ * it
+ */
+static int bellvolume = 0;
+
+/* default TERM value */
+char *termname = "st-256color";
+
+/*
+ * spaces per tab
+ *
+ * When you are changing this value, don't forget to adapt the »it« value in
+ * the st.info and appropriately install the st.info in the environment where
+ * you use this st version.
+ *
+ *	it#$tabspaces,
+ *
+ * Secondly make sure your kernel is not expanding tabs. When running `stty
+ * -a` »tab0« should appear. You can tell the terminal to not expand tabs by
+ *  running following command:
+ *
+ *	stty tabs
+ */
+unsigned int tabspaces = 8;
+
+/* Terminal colors (16 first used in escape sequence) */
+static const char *colorname[] = {
+    /* 8 normal colors */
+    "#000000", "#cc0000", "#4e9a06", "#c4a000", "#3465a4", "#75507b", "#06989a",
+    "#d3d7cf",
+
+    /* 8 bright colors */
+    "#000000", "#ef2929", "#8ae234", "#fce94f", "#5c5cff", "#ad7fa8", "#34e2e2",
+    "#eeeeec",
+
+    [255] = 0,
+
+    /* more colors can be added after 255 to use with DefaultXX */
+    "#cccccc", "#555555", "gray90", /* default foreground colour */
+    "black",                        /* default background colour */
+};
+
+/*
+ * Default colors (colorname index)
+ * foreground, background, cursor, reverse cursor
+ */
+unsigned int defaultfg = 258;
+unsigned int defaultbg = 259;
+unsigned int defaultcs = 256;
+static unsigned int defaultrcs = 257;
+
+/*
+ * https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h4-Functions-using-CSI-_-ordered-by-the-final-character-lparen-s-rparen:CSI-Ps-SP-q.1D81
+ * Default style of cursor
+ * 0: blinking block
+ * 1: blinking block (default)
+ * 2: steady block ("█")
+ * 3: blinking underline
+ * 4: steady underline ("_")
+ * 5: blinking bar
+ * 6: steady bar ("|")
+ * 7: blinking st cursor
+ * 8: steady st cursor
+ */
+static unsigned int cursorstyle = 0;
+static Rune stcursor = 0x2603; /* snowman ("☃") */
+
+/*
+ * Default columns and rows numbers
+ */
+
+static unsigned int cols = 80;
+static unsigned int rows = 24;
+
+/*
+ * Default colour and shape of the mouse cursor
+ */
+static unsigned int mouseshape = XC_xterm;
+static unsigned int mousefg = 7;
+static unsigned int mousebg = 0;
+
+/*
+ * Color used to display font attributes when fontconfig selected a font which
+ * doesn't match the ones requested.
+ */
+static unsigned int defaultattr = 11;
+
+/*
+ * Force mouse select/shortcuts while mask is active (when MODE_MOUSE is set).
+ * Note that if you want to use ShiftMask with selmasks, set this to an other
+ * modifier, set to 0 to not use it.
+ */
+static uint forcemousemod = ShiftMask;
+
+/*
+ * Xresources preferences to load at startup
+ */
+ResourcePref resources[] = {
+    {"font", STRING, &font},
+    {"color0", STRING, &colorname[0]},
+    {"color1", STRING, &colorname[1]},
+    {"color2", STRING, &colorname[2]},
+    {"color3", STRING, &colorname[3]},
+    {"color4", STRING, &colorname[4]},
+    {"color5", STRING, &colorname[5]},
+    {"color6", STRING, &colorname[6]},
+    {"color7", STRING, &colorname[7]},
+    {"color8", STRING, &colorname[8]},
+    {"color9", STRING, &colorname[9]},
+    {"color10", STRING, &colorname[10]},
+    {"color11", STRING, &colorname[11]},
+    {"color12", STRING, &colorname[12]},
+    {"color13", STRING, &colorname[13]},
+    {"color14", STRING, &colorname[14]},
+    {"color15", STRING, &colorname[15]},
+    {"background", STRING, &colorname[256]},
+    {"foreground", STRING, &colorname[257]},
+    {"cursorColor", STRING, &colorname[258]},
+    {"termname", STRING, &termname},
+    {"shell", STRING, &shell},
+    {"minlatency", INTEGER, &minlatency},
+    {"maxlatency", INTEGER, &maxlatency},
+    {"blinktimeout", INTEGER, &blinktimeout},
+    {"bellvolume", INTEGER, &bellvolume},
+    {"tabspaces", INTEGER, &tabspaces},
+    {"borderpx", INTEGER, &borderpx},
+    {"cwscale", FLOAT, &cwscale},
+    {"chscale", FLOAT, &chscale},
+};
+
+/*
+ * Internal mouse shortcuts.
+ * Beware that overloading Button1 will disable the selection.
+ */
+static MouseShortcut mshortcuts[] = {
+    /* mask                 button   function        argument       release */
+    {XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1},
+    {ShiftMask, Button4, ttysend, {.s = "\033[5;2~"}},
+    {XK_ANY_MOD, Button4, ttysend, {.s = "\031"}},
+    {ShiftMask, Button5, ttysend, {.s = "\033[6;2~"}},
+    {XK_ANY_MOD, Button5, ttysend, {.s = "\005"}},
+};
+
+/* Internal keyboard shortcuts. */
+#define MODKEY Mod1Mask
+#define TERMMOD (ControlMask | ShiftMask)
+
+static Shortcut shortcuts[] = {
+    /* mask                 keysym          function        argument */
+    {XK_ANY_MOD, XK_Break, sendbreak, {.i = 0}},
+    {ControlMask, XK_Print, toggleprinter, {.i = 0}},
+    {ShiftMask, XK_Print, printscreen, {.i = 0}},
+    {XK_ANY_MOD, XK_Print, printsel, {.i = 0}},
+    {TERMMOD, XK_Prior, zoom, {.f = +1}},
+    {TERMMOD, XK_Next, zoom, {.f = -1}},
+    {TERMMOD, XK_Home, zoomreset, {.f = 0}},
+    {TERMMOD, XK_C, clipcopy, {.i = 0}},
+    {TERMMOD, XK_V, clippaste, {.i = 0}},
+    {TERMMOD, XK_Y, selpaste, {.i = 0}},
+    {ShiftMask, XK_Insert, clippaste, {.i = 0}},
+    {TERMMOD, XK_Num_Lock, numlock, {.i = 0}},
+};
+
+/*
+ * Special keys (change & recompile st.info accordingly)
+ *
+ * Mask value:
+ * * Use XK_ANY_MOD to match the key no matter modifiers state
+ * * Use XK_NO_MOD to match the key alone (no modifiers)
+ * appkey value:
+ * * 0: no value
+ * * > 0: keypad application mode enabled
+ * *   = 2: term.numlock = 1
+ * * < 0: keypad application mode disabled
+ * appcursor value:
+ * * 0: no value
+ * * > 0: cursor application mode enabled
+ * * < 0: cursor application mode disabled
+ *
+ * Be careful with the order of the definitions because st searches in
+ * this table sequentially, so any XK_ANY_MOD must be in the last
+ * position for a key.
+ */
+
+/*
+ * If you want keys other than the X11 function keys (0xFD00 - 0xFFFF)
+ * to be mapped below, add them to this array.
+ */
+static KeySym mappedkeys[] = {-1};
+
+/*
+ * State bits to ignore when matching key or button events.  By default,
+ * numlock (Mod2Mask) and keyboard layout (XK_SWITCH_MOD) are ignored.
+ */
+static uint ignoremod = Mod2Mask | XK_SWITCH_MOD;
+
+/*
+ * This is the huge key array which defines all compatibility to the Linux
+ * world. Please decide about changes wisely.
+ */
+static Key key[] = {
+    /* keysym           mask            string      appkey appcursor */
+    {XK_KP_Home, ShiftMask, "\033[2J", 0, -1},
+    {XK_KP_Home, ShiftMask, "\033[1;2H", 0, +1},
+    {XK_KP_Home, XK_ANY_MOD, "\033[H", 0, -1},
+    {XK_KP_Home, XK_ANY_MOD, "\033[1~", 0, +1},
+    {XK_KP_Up, XK_ANY_MOD, "\033Ox", +1, 0},
+    {XK_KP_Up, XK_ANY_MOD, "\033[A", 0, -1},
+    {XK_KP_Up, XK_ANY_MOD, "\033OA", 0, +1},
+    {XK_KP_Down, XK_ANY_MOD, "\033Or", +1, 0},
+    {XK_KP_Down, XK_ANY_MOD, "\033[B", 0, -1},
+    {XK_KP_Down, XK_ANY_MOD, "\033OB", 0, +1},
+    {XK_KP_Left, XK_ANY_MOD, "\033Ot", +1, 0},
+    {XK_KP_Left, XK_ANY_MOD, "\033[D", 0, -1},
+    {XK_KP_Left, XK_ANY_MOD, "\033OD", 0, +1},
+    {XK_KP_Right, XK_ANY_MOD, "\033Ov", +1, 0},
+    {XK_KP_Right, XK_ANY_MOD, "\033[C", 0, -1},
+    {XK_KP_Right, XK_ANY_MOD, "\033OC", 0, +1},
+    {XK_KP_Prior, ShiftMask, "\033[5;2~", 0, 0},
+    {XK_KP_Prior, XK_ANY_MOD, "\033[5~", 0, 0},
+    {XK_KP_Begin, XK_ANY_MOD, "\033[E", 0, 0},
+    {XK_KP_End, ControlMask, "\033[J", -1, 0},
+    {XK_KP_End, ControlMask, "\033[1;5F", +1, 0},
+    {XK_KP_End, ShiftMask, "\033[K", -1, 0},
+    {XK_KP_End, ShiftMask, "\033[1;2F", +1, 0},
+    {XK_KP_End, XK_ANY_MOD, "\033[4~", 0, 0},
+    {XK_KP_Next, ShiftMask, "\033[6;2~", 0, 0},
+    {XK_KP_Next, XK_ANY_MOD, "\033[6~", 0, 0},
+    {XK_KP_Insert, ShiftMask, "\033[2;2~", +1, 0},
+    {XK_KP_Insert, ShiftMask, "\033[4l", -1, 0},
+    {XK_KP_Insert, ControlMask, "\033[L", -1, 0},
+    {XK_KP_Insert, ControlMask, "\033[2;5~", +1, 0},
+    {XK_KP_Insert, XK_ANY_MOD, "\033[4h", -1, 0},
+    {XK_KP_Insert, XK_ANY_MOD, "\033[2~", +1, 0},
+    {XK_KP_Delete, ControlMask, "\033[M", -1, 0},
+    {XK_KP_Delete, ControlMask, "\033[3;5~", +1, 0},
+    {XK_KP_Delete, ShiftMask, "\033[2K", -1, 0},
+    {XK_KP_Delete, ShiftMask, "\033[3;2~", +1, 0},
+    {XK_KP_Delete, XK_ANY_MOD, "\033[P", -1, 0},
+    {XK_KP_Delete, XK_ANY_MOD, "\033[3~", +1, 0},
+    {XK_KP_Multiply, XK_ANY_MOD, "\033Oj", +2, 0},
+    {XK_KP_Add, XK_ANY_MOD, "\033Ok", +2, 0},
+    {XK_KP_Enter, XK_ANY_MOD, "\033OM", +2, 0},
+    {XK_KP_Enter, XK_ANY_MOD, "\r", -1, 0},
+    {XK_KP_Subtract, XK_ANY_MOD, "\033Om", +2, 0},
+    {XK_KP_Decimal, XK_ANY_MOD, "\033On", +2, 0},
+    {XK_KP_Divide, XK_ANY_MOD, "\033Oo", +2, 0},
+    {XK_KP_0, XK_ANY_MOD, "\033Op", +2, 0},
+    {XK_KP_1, XK_ANY_MOD, "\033Oq", +2, 0},
+    {XK_KP_2, XK_ANY_MOD, "\033Or", +2, 0},
+    {XK_KP_3, XK_ANY_MOD, "\033Os", +2, 0},
+    {XK_KP_4, XK_ANY_MOD, "\033Ot", +2, 0},
+    {XK_KP_5, XK_ANY_MOD, "\033Ou", +2, 0},
+    {XK_KP_6, XK_ANY_MOD, "\033Ov", +2, 0},
+    {XK_KP_7, XK_ANY_MOD, "\033Ow", +2, 0},
+    {XK_KP_8, XK_ANY_MOD, "\033Ox", +2, 0},
+    {XK_KP_9, XK_ANY_MOD, "\033Oy", +2, 0},
+    {XK_Up, ShiftMask, "\033[1;2A", 0, 0},
+    {XK_Up, Mod1Mask, "\033[1;3A", 0, 0},
+    {XK_Up, ShiftMask | Mod1Mask, "\033[1;4A", 0, 0},
+    {XK_Up, ControlMask, "\033[1;5A", 0, 0},
+    {XK_Up, ShiftMask | ControlMask, "\033[1;6A", 0, 0},
+    {XK_Up, ControlMask | Mod1Mask, "\033[1;7A", 0, 0},
+    {XK_Up, ShiftMask | ControlMask | Mod1Mask, "\033[1;8A", 0, 0},
+    {XK_Up, XK_ANY_MOD, "\033[A", 0, -1},
+    {XK_Up, XK_ANY_MOD, "\033OA", 0, +1},
+    {XK_Down, ShiftMask, "\033[1;2B", 0, 0},
+    {XK_Down, Mod1Mask, "\033[1;3B", 0, 0},
+    {XK_Down, ShiftMask | Mod1Mask, "\033[1;4B", 0, 0},
+    {XK_Down, ControlMask, "\033[1;5B", 0, 0},
+    {XK_Down, ShiftMask | ControlMask, "\033[1;6B", 0, 0},
+    {XK_Down, ControlMask | Mod1Mask, "\033[1;7B", 0, 0},
+    {XK_Down, ShiftMask | ControlMask | Mod1Mask, "\033[1;8B", 0, 0},
+    {XK_Down, XK_ANY_MOD, "\033[B", 0, -1},
+    {XK_Down, XK_ANY_MOD, "\033OB", 0, +1},
+    {XK_Left, ShiftMask, "\033[1;2D", 0, 0},
+    {XK_Left, Mod1Mask, "\033[1;3D", 0, 0},
+    {XK_Left, ShiftMask | Mod1Mask, "\033[1;4D", 0, 0},
+    {XK_Left, ControlMask, "\033[1;5D", 0, 0},
+    {XK_Left, ShiftMask | ControlMask, "\033[1;6D", 0, 0},
+    {XK_Left, ControlMask | Mod1Mask, "\033[1;7D", 0, 0},
+    {XK_Left, ShiftMask | ControlMask | Mod1Mask, "\033[1;8D", 0, 0},
+    {XK_Left, XK_ANY_MOD, "\033[D", 0, -1},
+    {XK_Left, XK_ANY_MOD, "\033OD", 0, +1},
+    {XK_Right, ShiftMask, "\033[1;2C", 0, 0},
+    {XK_Right, Mod1Mask, "\033[1;3C", 0, 0},
+    {XK_Right, ShiftMask | Mod1Mask, "\033[1;4C", 0, 0},
+    {XK_Right, ControlMask, "\033[1;5C", 0, 0},
+    {XK_Right, ShiftMask | ControlMask, "\033[1;6C", 0, 0},
+    {XK_Right, ControlMask | Mod1Mask, "\033[1;7C", 0, 0},
+    {XK_Right, ShiftMask | ControlMask | Mod1Mask, "\033[1;8C", 0, 0},
+    {XK_Right, XK_ANY_MOD, "\033[C", 0, -1},
+    {XK_Right, XK_ANY_MOD, "\033OC", 0, +1},
+    {XK_ISO_Left_Tab, ShiftMask, "\033[Z", 0, 0},
+    {XK_Return, Mod1Mask, "\033\r", 0, 0},
+    {XK_Return, XK_ANY_MOD, "\r", 0, 0},
+    {XK_Insert, ShiftMask, "\033[4l", -1, 0},
+    {XK_Insert, ShiftMask, "\033[2;2~", +1, 0},
+    {XK_Insert, ControlMask, "\033[L", -1, 0},
+    {XK_Insert, ControlMask, "\033[2;5~", +1, 0},
+    {XK_Insert, XK_ANY_MOD, "\033[4h", -1, 0},
+    {XK_Insert, XK_ANY_MOD, "\033[2~", +1, 0},
+    {XK_Delete, ControlMask, "\033[M", -1, 0},
+    {XK_Delete, ControlMask, "\033[3;5~", +1, 0},
+    {XK_Delete, ShiftMask, "\033[2K", -1, 0},
+    {XK_Delete, ShiftMask, "\033[3;2~", +1, 0},
+    {XK_Delete, XK_ANY_MOD, "\033[P", -1, 0},
+    {XK_Delete, XK_ANY_MOD, "\033[3~", +1, 0},
+    {XK_BackSpace, XK_NO_MOD, "\177", 0, 0},
+    {XK_BackSpace, Mod1Mask, "\033\177", 0, 0},
+    {XK_Home, ShiftMask, "\033[2J", 0, -1},
+    {XK_Home, ShiftMask, "\033[1;2H", 0, +1},
+    {XK_Home, XK_ANY_MOD, "\033[H", 0, -1},
+    {XK_Home, XK_ANY_MOD, "\033[1~", 0, +1},
+    {XK_End, ControlMask, "\033[J", -1, 0},
+    {XK_End, ControlMask, "\033[1;5F", +1, 0},
+    {XK_End, ShiftMask, "\033[K", -1, 0},
+    {XK_End, ShiftMask, "\033[1;2F", +1, 0},
+    {XK_End, XK_ANY_MOD, "\033[4~", 0, 0},
+    {XK_Prior, ControlMask, "\033[5;5~", 0, 0},
+    {XK_Prior, ShiftMask, "\033[5;2~", 0, 0},
+    {XK_Prior, XK_ANY_MOD, "\033[5~", 0, 0},
+    {XK_Next, ControlMask, "\033[6;5~", 0, 0},
+    {XK_Next, ShiftMask, "\033[6;2~", 0, 0},
+    {XK_Next, XK_ANY_MOD, "\033[6~", 0, 0},
+    {XK_F1, XK_NO_MOD, "\033OP", 0, 0},
+    {XK_F1, /* F13 */ ShiftMask, "\033[1;2P", 0, 0},
+    {XK_F1, /* F25 */ ControlMask, "\033[1;5P", 0, 0},
+    {XK_F1, /* F37 */ Mod4Mask, "\033[1;6P", 0, 0},
+    {XK_F1, /* F49 */ Mod1Mask, "\033[1;3P", 0, 0},
+    {XK_F1, /* F61 */ Mod3Mask, "\033[1;4P", 0, 0},
+    {XK_F2, XK_NO_MOD, "\033OQ", 0, 0},
+    {XK_F2, /* F14 */ ShiftMask, "\033[1;2Q", 0, 0},
+    {XK_F2, /* F26 */ ControlMask, "\033[1;5Q", 0, 0},
+    {XK_F2, /* F38 */ Mod4Mask, "\033[1;6Q", 0, 0},
+    {XK_F2, /* F50 */ Mod1Mask, "\033[1;3Q", 0, 0},
+    {XK_F2, /* F62 */ Mod3Mask, "\033[1;4Q", 0, 0},
+    {XK_F3, XK_NO_MOD, "\033OR", 0, 0},
+    {XK_F3, /* F15 */ ShiftMask, "\033[1;2R", 0, 0},
+    {XK_F3, /* F27 */ ControlMask, "\033[1;5R", 0, 0},
+    {XK_F3, /* F39 */ Mod4Mask, "\033[1;6R", 0, 0},
+    {XK_F3, /* F51 */ Mod1Mask, "\033[1;3R", 0, 0},
+    {XK_F3, /* F63 */ Mod3Mask, "\033[1;4R", 0, 0},
+    {XK_F4, XK_NO_MOD, "\033OS", 0, 0},
+    {XK_F4, /* F16 */ ShiftMask, "\033[1;2S", 0, 0},
+    {XK_F4, /* F28 */ ControlMask, "\033[1;5S", 0, 0},
+    {XK_F4, /* F40 */ Mod4Mask, "\033[1;6S", 0, 0},
+    {XK_F4, /* F52 */ Mod1Mask, "\033[1;3S", 0, 0},
+    {XK_F5, XK_NO_MOD, "\033[15~", 0, 0},
+    {XK_F5, /* F17 */ ShiftMask, "\033[15;2~", 0, 0},
+    {XK_F5, /* F29 */ ControlMask, "\033[15;5~", 0, 0},
+    {XK_F5, /* F41 */ Mod4Mask, "\033[15;6~", 0, 0},
+    {XK_F5, /* F53 */ Mod1Mask, "\033[15;3~", 0, 0},
+    {XK_F6, XK_NO_MOD, "\033[17~", 0, 0},
+    {XK_F6, /* F18 */ ShiftMask, "\033[17;2~", 0, 0},
+    {XK_F6, /* F30 */ ControlMask, "\033[17;5~", 0, 0},
+    {XK_F6, /* F42 */ Mod4Mask, "\033[17;6~", 0, 0},
+    {XK_F6, /* F54 */ Mod1Mask, "\033[17;3~", 0, 0},
+    {XK_F7, XK_NO_MOD, "\033[18~", 0, 0},
+    {XK_F7, /* F19 */ ShiftMask, "\033[18;2~", 0, 0},
+    {XK_F7, /* F31 */ ControlMask, "\033[18;5~", 0, 0},
+    {XK_F7, /* F43 */ Mod4Mask, "\033[18;6~", 0, 0},
+    {XK_F7, /* F55 */ Mod1Mask, "\033[18;3~", 0, 0},
+    {XK_F8, XK_NO_MOD, "\033[19~", 0, 0},
+    {XK_F8, /* F20 */ ShiftMask, "\033[19;2~", 0, 0},
+    {XK_F8, /* F32 */ ControlMask, "\033[19;5~", 0, 0},
+    {XK_F8, /* F44 */ Mod4Mask, "\033[19;6~", 0, 0},
+    {XK_F8, /* F56 */ Mod1Mask, "\033[19;3~", 0, 0},
+    {XK_F9, XK_NO_MOD, "\033[20~", 0, 0},
+    {XK_F9, /* F21 */ ShiftMask, "\033[20;2~", 0, 0},
+    {XK_F9, /* F33 */ ControlMask, "\033[20;5~", 0, 0},
+    {XK_F9, /* F45 */ Mod4Mask, "\033[20;6~", 0, 0},
+    {XK_F9, /* F57 */ Mod1Mask, "\033[20;3~", 0, 0},
+    {XK_F10, XK_NO_MOD, "\033[21~", 0, 0},
+    {XK_F10, /* F22 */ ShiftMask, "\033[21;2~", 0, 0},
+    {XK_F10, /* F34 */ ControlMask, "\033[21;5~", 0, 0},
+    {XK_F10, /* F46 */ Mod4Mask, "\033[21;6~", 0, 0},
+    {XK_F10, /* F58 */ Mod1Mask, "\033[21;3~", 0, 0},
+    {XK_F11, XK_NO_MOD, "\033[23~", 0, 0},
+    {XK_F11, /* F23 */ ShiftMask, "\033[23;2~", 0, 0},
+    {XK_F11, /* F35 */ ControlMask, "\033[23;5~", 0, 0},
+    {XK_F11, /* F47 */ Mod4Mask, "\033[23;6~", 0, 0},
+    {XK_F11, /* F59 */ Mod1Mask, "\033[23;3~", 0, 0},
+    {XK_F12, XK_NO_MOD, "\033[24~", 0, 0},
+    {XK_F12, /* F24 */ ShiftMask, "\033[24;2~", 0, 0},
+    {XK_F12, /* F36 */ ControlMask, "\033[24;5~", 0, 0},
+    {XK_F12, /* F48 */ Mod4Mask, "\033[24;6~", 0, 0},
+    {XK_F12, /* F60 */ Mod1Mask, "\033[24;3~", 0, 0},
+    {XK_F13, XK_NO_MOD, "\033[1;2P", 0, 0},
+    {XK_F14, XK_NO_MOD, "\033[1;2Q", 0, 0},
+    {XK_F15, XK_NO_MOD, "\033[1;2R", 0, 0},
+    {XK_F16, XK_NO_MOD, "\033[1;2S", 0, 0},
+    {XK_F17, XK_NO_MOD, "\033[15;2~", 0, 0},
+    {XK_F18, XK_NO_MOD, "\033[17;2~", 0, 0},
+    {XK_F19, XK_NO_MOD, "\033[18;2~", 0, 0},
+    {XK_F20, XK_NO_MOD, "\033[19;2~", 0, 0},
+    {XK_F21, XK_NO_MOD, "\033[20;2~", 0, 0},
+    {XK_F22, XK_NO_MOD, "\033[21;2~", 0, 0},
+    {XK_F23, XK_NO_MOD, "\033[23;2~", 0, 0},
+    {XK_F24, XK_NO_MOD, "\033[24;2~", 0, 0},
+    {XK_F25, XK_NO_MOD, "\033[1;5P", 0, 0},
+    {XK_F26, XK_NO_MOD, "\033[1;5Q", 0, 0},
+    {XK_F27, XK_NO_MOD, "\033[1;5R", 0, 0},
+    {XK_F28, XK_NO_MOD, "\033[1;5S", 0, 0},
+    {XK_F29, XK_NO_MOD, "\033[15;5~", 0, 0},
+    {XK_F30, XK_NO_MOD, "\033[17;5~", 0, 0},
+    {XK_F31, XK_NO_MOD, "\033[18;5~", 0, 0},
+    {XK_F32, XK_NO_MOD, "\033[19;5~", 0, 0},
+    {XK_F33, XK_NO_MOD, "\033[20;5~", 0, 0},
+    {XK_F34, XK_NO_MOD, "\033[21;5~", 0, 0},
+    {XK_F35, XK_NO_MOD, "\033[23;5~", 0, 0},
+};
+
+/*
+ * Selection types' masks.
+ * Use the same masks as usual.
+ * Button1Mask is always unset, to make masks match between ButtonPress.
+ * ButtonRelease and MotionNotify.
+ * If no match is found, regular selection is used.
+ */
+static uint selmasks[] = {
+    [SEL_RECTANGULAR] = Mod1Mask,
+};
+
+/*
+ * Printable characters in ASCII, used to estimate the advance width
+ * of single wide characters.
+ */
+static char ascii_printable[] = " !\"#$%&'()*+,-./0123456789:;<=>?"
+                                "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
+                                "`abcdefghijklmnopqrstuvwxyz{|}~";
diff --git a/config.h b/config.h
new file mode 100644
index 0000000..c807a32
--- /dev/null
+++ b/config.h
@@ -0,0 +1,507 @@
+/* See LICENSE file for copyright and license details. */
+
+/*
+ * appearance
+ *
+ * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
+ */
+static char font[] =
+    "DejaVuSansMono Nerd Font Mono:pixelsize=14:antialias=true;autohint=true";
+/* Spare fonts */
+static char *font2[] = {
+    "Inconsolata for Powerline:pixelsize=12:antialias=true:autohint=true",
+    "Hack Nerd Font Mono:pixelsize=11:antialias=true:autohint=true",
+};
+static int borderpx = 2;
+
+/*
+ * What program is execed by st depends of these precedence rules:
+ * 1: program passed with -e
+ * 2: scroll and/or utmp
+ * 3: SHELL environment variable
+ * 4: value of shell in /etc/passwd
+ * 5: value of shell in config.h
+ */
+static char *shell = "/bin/sh";
+char *utmp = NULL;
+/* scroll program: to enable use a string like "scroll" */
+char *scroll = NULL;
+char *stty_args = "stty raw pass8 nl -echo -iexten -cstopb 38400";
+
+/* identification sequence returned in DA and DECID */
+char *vtiden = "\033[?6c";
+
+/* Kerning / character bounding-box multipliers */
+static float cwscale = 1.0;
+static float chscale = 1.0;
+
+/*
+ * word delimiter string
+ *
+ * More advanced example: L" `'\"()[]{}"
+ */
+wchar_t *worddelimiters = L" ";
+
+/* selection timeouts (in milliseconds) */
+static unsigned int doubleclicktimeout = 300;
+static unsigned int tripleclicktimeout = 600;
+
+/* alt screens */
+int allowaltscreen = 1;
+
+/* allow certain non-interactive (insecure) window operations such as:
+   setting the clipboard text */
+int allowwindowops = 0;
+
+/*
+ * draw latency range in ms - from new content/keypress/etc until drawing.
+ * within this range, st draws when content stops arriving (idle). mostly it's
+ * near minlatency, but it waits longer for slow updates to avoid partial draw.
+ * low minlatency will tear/flicker more, as it can "detect" idle too early.
+ */
+static double minlatency = 8;
+static double maxlatency = 33;
+
+/*
+ * blinking timeout (set to 0 to disable blinking) for the terminal blinking
+ * attribute.
+ */
+static unsigned int blinktimeout = 800;
+
+/*
+ * thickness of underline and bar cursors
+ */
+static unsigned int cursorthickness = 2;
+
+/*
+ * bell volume. It must be a value between -100 and 100. Use 0 for disabling
+ * it
+ */
+static int bellvolume = 0;
+
+/* default TERM value */
+char *termname = "st-256color";
+
+/*
+ * spaces per tab
+ *
+ * When you are changing this value, don't forget to adapt the »it« value in
+ * the st.info and appropriately install the st.info in the environment where
+ * you use this st version.
+ *
+ *	it#$tabspaces,
+ *
+ * Secondly make sure your kernel is not expanding tabs. When running `stty
+ * -a` »tab0« should appear. You can tell the terminal to not expand tabs by
+ *  running following command:
+ *
+ *	stty tabs
+ */
+unsigned int tabspaces = 8;
+
+/* Terminal colors (16 first used in escape sequence) */
+static const char *colorname[] = {
+    /* 8 normal colors */
+    "#000000", "#cc0000", "#4e9a06", "#c4a000", "#3465a4", "#75507b", "#06989a",
+    "#d3d7cf",
+
+    /* 8 bright colors */
+    "#000000", "#ef2929", "#8ae234", "#fce94f", "#5c5cff", "#ad7fa8", "#34e2e2",
+    "#eeeeec",
+
+    [255] = 0,
+
+    /* more colors can be added after 255 to use with DefaultXX */
+    "#cccccc", "#555555", "gray90", /* default foreground colour */
+    "black",                        /* default background colour */
+};
+
+/*
+ * Default colors (colorname index)
+ * foreground, background, cursor, reverse cursor
+ */
+unsigned int defaultfg = 258;
+unsigned int defaultbg = 259;
+unsigned int defaultcs = 256;
+static unsigned int defaultrcs = 257;
+
+/*
+ * https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h4-Functions-using-CSI-_-ordered-by-the-final-character-lparen-s-rparen:CSI-Ps-SP-q.1D81
+ * Default style of cursor
+ * 0: blinking block
+ * 1: blinking block (default)
+ * 2: steady block ("█")
+ * 3: blinking underline
+ * 4: steady underline ("_")
+ * 5: blinking bar
+ * 6: steady bar ("|")
+ * 7: blinking st cursor
+ * 8: steady st cursor
+ */
+static unsigned int cursorstyle = 0;
+static Rune stcursor = 0x2603; /* snowman ("☃") */
+
+/*
+ * Default columns and rows numbers
+ */
+
+static unsigned int cols = 80;
+static unsigned int rows = 24;
+
+/*
+ * Default colour and shape of the mouse cursor
+ */
+static unsigned int mouseshape = XC_xterm;
+static unsigned int mousefg = 7;
+static unsigned int mousebg = 0;
+
+/*
+ * Color used to display font attributes when fontconfig selected a font which
+ * doesn't match the ones requested.
+ */
+static unsigned int defaultattr = 11;
+
+/*
+ * Force mouse select/shortcuts while mask is active (when MODE_MOUSE is set).
+ * Note that if you want to use ShiftMask with selmasks, set this to an other
+ * modifier, set to 0 to not use it.
+ */
+static uint forcemousemod = ShiftMask;
+
+/*
+ * Xresources preferences to load at startup
+ */
+ResourcePref resources[] = {
+    {"font", STRING, &font},
+    {"color0", STRING, &colorname[0]},
+    {"color1", STRING, &colorname[1]},
+    {"color2", STRING, &colorname[2]},
+    {"color3", STRING, &colorname[3]},
+    {"color4", STRING, &colorname[4]},
+    {"color5", STRING, &colorname[5]},
+    {"color6", STRING, &colorname[6]},
+    {"color7", STRING, &colorname[7]},
+    {"color8", STRING, &colorname[8]},
+    {"color9", STRING, &colorname[9]},
+    {"color10", STRING, &colorname[10]},
+    {"color11", STRING, &colorname[11]},
+    {"color12", STRING, &colorname[12]},
+    {"color13", STRING, &colorname[13]},
+    {"color14", STRING, &colorname[14]},
+    {"color15", STRING, &colorname[15]},
+    {"background", STRING, &colorname[256]},
+    {"foreground", STRING, &colorname[257]},
+    {"cursorColor", STRING, &colorname[258]},
+    {"termname", STRING, &termname},
+    {"shell", STRING, &shell},
+    {"minlatency", INTEGER, &minlatency},
+    {"maxlatency", INTEGER, &maxlatency},
+    {"blinktimeout", INTEGER, &blinktimeout},
+    {"bellvolume", INTEGER, &bellvolume},
+    {"tabspaces", INTEGER, &tabspaces},
+    {"borderpx", INTEGER, &borderpx},
+    {"cwscale", FLOAT, &cwscale},
+    {"chscale", FLOAT, &chscale},
+};
+
+/*
+ * Internal mouse shortcuts.
+ * Beware that overloading Button1 will disable the selection.
+ */
+static MouseShortcut mshortcuts[] = {
+    /* mask                 button   function        argument       release */
+    {XK_ANY_MOD, Button2, selpaste, {.i = 0}, 1},
+    {ShiftMask, Button4, ttysend, {.s = "\033[5;2~"}},
+    {XK_ANY_MOD, Button4, ttysend, {.s = "\031"}},
+    {ShiftMask, Button5, ttysend, {.s = "\033[6;2~"}},
+    {XK_ANY_MOD, Button5, ttysend, {.s = "\005"}},
+};
+
+/* Internal keyboard shortcuts. */
+#define MODKEY Mod1Mask
+#define TERMMOD (ControlMask | ShiftMask)
+
+static Shortcut shortcuts[] = {
+    /* mask                 keysym          function        argument */
+    {XK_ANY_MOD, XK_Break, sendbreak, {.i = 0}},
+    {ControlMask, XK_Print, toggleprinter, {.i = 0}},
+    {ShiftMask, XK_Print, printscreen, {.i = 0}},
+    {XK_ANY_MOD, XK_Print, printsel, {.i = 0}},
+    {TERMMOD, XK_Prior, zoom, {.f = +1}},
+    {TERMMOD, XK_Next, zoom, {.f = -1}},
+    {TERMMOD, XK_Home, zoomreset, {.f = 0}},
+    {TERMMOD, XK_C, clipcopy, {.i = 0}},
+    {TERMMOD, XK_V, clippaste, {.i = 0}},
+    {TERMMOD, XK_Y, selpaste, {.i = 0}},
+    {ShiftMask, XK_Insert, clippaste, {.i = 0}},
+    {TERMMOD, XK_Num_Lock, numlock, {.i = 0}},
+};
+
+/*
+ * Special keys (change & recompile st.info accordingly)
+ *
+ * Mask value:
+ * * Use XK_ANY_MOD to match the key no matter modifiers state
+ * * Use XK_NO_MOD to match the key alone (no modifiers)
+ * appkey value:
+ * * 0: no value
+ * * > 0: keypad application mode enabled
+ * *   = 2: term.numlock = 1
+ * * < 0: keypad application mode disabled
+ * appcursor value:
+ * * 0: no value
+ * * > 0: cursor application mode enabled
+ * * < 0: cursor application mode disabled
+ *
+ * Be careful with the order of the definitions because st searches in
+ * this table sequentially, so any XK_ANY_MOD must be in the last
+ * position for a key.
+ */
+
+/*
+ * If you want keys other than the X11 function keys (0xFD00 - 0xFFFF)
+ * to be mapped below, add them to this array.
+ */
+static KeySym mappedkeys[] = {-1};
+
+/*
+ * State bits to ignore when matching key or button events.  By default,
+ * numlock (Mod2Mask) and keyboard layout (XK_SWITCH_MOD) are ignored.
+ */
+static uint ignoremod = Mod2Mask | XK_SWITCH_MOD;
+
+/*
+ * This is the huge key array which defines all compatibility to the Linux
+ * world. Please decide about changes wisely.
+ */
+static Key key[] = {
+    /* keysym           mask            string      appkey appcursor */
+    {XK_KP_Home, ShiftMask, "\033[2J", 0, -1},
+    {XK_KP_Home, ShiftMask, "\033[1;2H", 0, +1},
+    {XK_KP_Home, XK_ANY_MOD, "\033[H", 0, -1},
+    {XK_KP_Home, XK_ANY_MOD, "\033[1~", 0, +1},
+    {XK_KP_Up, XK_ANY_MOD, "\033Ox", +1, 0},
+    {XK_KP_Up, XK_ANY_MOD, "\033[A", 0, -1},
+    {XK_KP_Up, XK_ANY_MOD, "\033OA", 0, +1},
+    {XK_KP_Down, XK_ANY_MOD, "\033Or", +1, 0},
+    {XK_KP_Down, XK_ANY_MOD, "\033[B", 0, -1},
+    {XK_KP_Down, XK_ANY_MOD, "\033OB", 0, +1},
+    {XK_KP_Left, XK_ANY_MOD, "\033Ot", +1, 0},
+    {XK_KP_Left, XK_ANY_MOD, "\033[D", 0, -1},
+    {XK_KP_Left, XK_ANY_MOD, "\033OD", 0, +1},
+    {XK_KP_Right, XK_ANY_MOD, "\033Ov", +1, 0},
+    {XK_KP_Right, XK_ANY_MOD, "\033[C", 0, -1},
+    {XK_KP_Right, XK_ANY_MOD, "\033OC", 0, +1},
+    {XK_KP_Prior, ShiftMask, "\033[5;2~", 0, 0},
+    {XK_KP_Prior, XK_ANY_MOD, "\033[5~", 0, 0},
+    {XK_KP_Begin, XK_ANY_MOD, "\033[E", 0, 0},
+    {XK_KP_End, ControlMask, "\033[J", -1, 0},
+    {XK_KP_End, ControlMask, "\033[1;5F", +1, 0},
+    {XK_KP_End, ShiftMask, "\033[K", -1, 0},
+    {XK_KP_End, ShiftMask, "\033[1;2F", +1, 0},
+    {XK_KP_End, XK_ANY_MOD, "\033[4~", 0, 0},
+    {XK_KP_Next, ShiftMask, "\033[6;2~", 0, 0},
+    {XK_KP_Next, XK_ANY_MOD, "\033[6~", 0, 0},
+    {XK_KP_Insert, ShiftMask, "\033[2;2~", +1, 0},
+    {XK_KP_Insert, ShiftMask, "\033[4l", -1, 0},
+    {XK_KP_Insert, ControlMask, "\033[L", -1, 0},
+    {XK_KP_Insert, ControlMask, "\033[2;5~", +1, 0},
+    {XK_KP_Insert, XK_ANY_MOD, "\033[4h", -1, 0},
+    {XK_KP_Insert, XK_ANY_MOD, "\033[2~", +1, 0},
+    {XK_KP_Delete, ControlMask, "\033[M", -1, 0},
+    {XK_KP_Delete, ControlMask, "\033[3;5~", +1, 0},
+    {XK_KP_Delete, ShiftMask, "\033[2K", -1, 0},
+    {XK_KP_Delete, ShiftMask, "\033[3;2~", +1, 0},
+    {XK_KP_Delete, XK_ANY_MOD, "\033[P", -1, 0},
+    {XK_KP_Delete, XK_ANY_MOD, "\033[3~", +1, 0},
+    {XK_KP_Multiply, XK_ANY_MOD, "\033Oj", +2, 0},
+    {XK_KP_Add, XK_ANY_MOD, "\033Ok", +2, 0},
+    {XK_KP_Enter, XK_ANY_MOD, "\033OM", +2, 0},
+    {XK_KP_Enter, XK_ANY_MOD, "\r", -1, 0},
+    {XK_KP_Subtract, XK_ANY_MOD, "\033Om", +2, 0},
+    {XK_KP_Decimal, XK_ANY_MOD, "\033On", +2, 0},
+    {XK_KP_Divide, XK_ANY_MOD, "\033Oo", +2, 0},
+    {XK_KP_0, XK_ANY_MOD, "\033Op", +2, 0},
+    {XK_KP_1, XK_ANY_MOD, "\033Oq", +2, 0},
+    {XK_KP_2, XK_ANY_MOD, "\033Or", +2, 0},
+    {XK_KP_3, XK_ANY_MOD, "\033Os", +2, 0},
+    {XK_KP_4, XK_ANY_MOD, "\033Ot", +2, 0},
+    {XK_KP_5, XK_ANY_MOD, "\033Ou", +2, 0},
+    {XK_KP_6, XK_ANY_MOD, "\033Ov", +2, 0},
+    {XK_KP_7, XK_ANY_MOD, "\033Ow", +2, 0},
+    {XK_KP_8, XK_ANY_MOD, "\033Ox", +2, 0},
+    {XK_KP_9, XK_ANY_MOD, "\033Oy", +2, 0},
+    {XK_Up, ShiftMask, "\033[1;2A", 0, 0},
+    {XK_Up, Mod1Mask, "\033[1;3A", 0, 0},
+    {XK_Up, ShiftMask | Mod1Mask, "\033[1;4A", 0, 0},
+    {XK_Up, ControlMask, "\033[1;5A", 0, 0},
+    {XK_Up, ShiftMask | ControlMask, "\033[1;6A", 0, 0},
+    {XK_Up, ControlMask | Mod1Mask, "\033[1;7A", 0, 0},
+    {XK_Up, ShiftMask | ControlMask | Mod1Mask, "\033[1;8A", 0, 0},
+    {XK_Up, XK_ANY_MOD, "\033[A", 0, -1},
+    {XK_Up, XK_ANY_MOD, "\033OA", 0, +1},
+    {XK_Down, ShiftMask, "\033[1;2B", 0, 0},
+    {XK_Down, Mod1Mask, "\033[1;3B", 0, 0},
+    {XK_Down, ShiftMask | Mod1Mask, "\033[1;4B", 0, 0},
+    {XK_Down, ControlMask, "\033[1;5B", 0, 0},
+    {XK_Down, ShiftMask | ControlMask, "\033[1;6B", 0, 0},
+    {XK_Down, ControlMask | Mod1Mask, "\033[1;7B", 0, 0},
+    {XK_Down, ShiftMask | ControlMask | Mod1Mask, "\033[1;8B", 0, 0},
+    {XK_Down, XK_ANY_MOD, "\033[B", 0, -1},
+    {XK_Down, XK_ANY_MOD, "\033OB", 0, +1},
+    {XK_Left, ShiftMask, "\033[1;2D", 0, 0},
+    {XK_Left, Mod1Mask, "\033[1;3D", 0, 0},
+    {XK_Left, ShiftMask | Mod1Mask, "\033[1;4D", 0, 0},
+    {XK_Left, ControlMask, "\033[1;5D", 0, 0},
+    {XK_Left, ShiftMask | ControlMask, "\033[1;6D", 0, 0},
+    {XK_Left, ControlMask | Mod1Mask, "\033[1;7D", 0, 0},
+    {XK_Left, ShiftMask | ControlMask | Mod1Mask, "\033[1;8D", 0, 0},
+    {XK_Left, XK_ANY_MOD, "\033[D", 0, -1},
+    {XK_Left, XK_ANY_MOD, "\033OD", 0, +1},
+    {XK_Right, ShiftMask, "\033[1;2C", 0, 0},
+    {XK_Right, Mod1Mask, "\033[1;3C", 0, 0},
+    {XK_Right, ShiftMask | Mod1Mask, "\033[1;4C", 0, 0},
+    {XK_Right, ControlMask, "\033[1;5C", 0, 0},
+    {XK_Right, ShiftMask | ControlMask, "\033[1;6C", 0, 0},
+    {XK_Right, ControlMask | Mod1Mask, "\033[1;7C", 0, 0},
+    {XK_Right, ShiftMask | ControlMask | Mod1Mask, "\033[1;8C", 0, 0},
+    {XK_Right, XK_ANY_MOD, "\033[C", 0, -1},
+    {XK_Right, XK_ANY_MOD, "\033OC", 0, +1},
+    {XK_ISO_Left_Tab, ShiftMask, "\033[Z", 0, 0},
+    {XK_Return, Mod1Mask, "\033\r", 0, 0},
+    {XK_Return, XK_ANY_MOD, "\r", 0, 0},
+    {XK_Insert, ShiftMask, "\033[4l", -1, 0},
+    {XK_Insert, ShiftMask, "\033[2;2~", +1, 0},
+    {XK_Insert, ControlMask, "\033[L", -1, 0},
+    {XK_Insert, ControlMask, "\033[2;5~", +1, 0},
+    {XK_Insert, XK_ANY_MOD, "\033[4h", -1, 0},
+    {XK_Insert, XK_ANY_MOD, "\033[2~", +1, 0},
+    {XK_Delete, ControlMask, "\033[M", -1, 0},
+    {XK_Delete, ControlMask, "\033[3;5~", +1, 0},
+    {XK_Delete, ShiftMask, "\033[2K", -1, 0},
+    {XK_Delete, ShiftMask, "\033[3;2~", +1, 0},
+    {XK_Delete, XK_ANY_MOD, "\033[P", -1, 0},
+    {XK_Delete, XK_ANY_MOD, "\033[3~", +1, 0},
+    {XK_BackSpace, XK_NO_MOD, "\177", 0, 0},
+    {XK_BackSpace, Mod1Mask, "\033\177", 0, 0},
+    {XK_Home, ShiftMask, "\033[2J", 0, -1},
+    {XK_Home, ShiftMask, "\033[1;2H", 0, +1},
+    {XK_Home, XK_ANY_MOD, "\033[H", 0, -1},
+    {XK_Home, XK_ANY_MOD, "\033[1~", 0, +1},
+    {XK_End, ControlMask, "\033[J", -1, 0},
+    {XK_End, ControlMask, "\033[1;5F", +1, 0},
+    {XK_End, ShiftMask, "\033[K", -1, 0},
+    {XK_End, ShiftMask, "\033[1;2F", +1, 0},
+    {XK_End, XK_ANY_MOD, "\033[4~", 0, 0},
+    {XK_Prior, ControlMask, "\033[5;5~", 0, 0},
+    {XK_Prior, ShiftMask, "\033[5;2~", 0, 0},
+    {XK_Prior, XK_ANY_MOD, "\033[5~", 0, 0},
+    {XK_Next, ControlMask, "\033[6;5~", 0, 0},
+    {XK_Next, ShiftMask, "\033[6;2~", 0, 0},
+    {XK_Next, XK_ANY_MOD, "\033[6~", 0, 0},
+    {XK_F1, XK_NO_MOD, "\033OP", 0, 0},
+    {XK_F1, /* F13 */ ShiftMask, "\033[1;2P", 0, 0},
+    {XK_F1, /* F25 */ ControlMask, "\033[1;5P", 0, 0},
+    {XK_F1, /* F37 */ Mod4Mask, "\033[1;6P", 0, 0},
+    {XK_F1, /* F49 */ Mod1Mask, "\033[1;3P", 0, 0},
+    {XK_F1, /* F61 */ Mod3Mask, "\033[1;4P", 0, 0},
+    {XK_F2, XK_NO_MOD, "\033OQ", 0, 0},
+    {XK_F2, /* F14 */ ShiftMask, "\033[1;2Q", 0, 0},
+    {XK_F2, /* F26 */ ControlMask, "\033[1;5Q", 0, 0},
+    {XK_F2, /* F38 */ Mod4Mask, "\033[1;6Q", 0, 0},
+    {XK_F2, /* F50 */ Mod1Mask, "\033[1;3Q", 0, 0},
+    {XK_F2, /* F62 */ Mod3Mask, "\033[1;4Q", 0, 0},
+    {XK_F3, XK_NO_MOD, "\033OR", 0, 0},
+    {XK_F3, /* F15 */ ShiftMask, "\033[1;2R", 0, 0},
+    {XK_F3, /* F27 */ ControlMask, "\033[1;5R", 0, 0},
+    {XK_F3, /* F39 */ Mod4Mask, "\033[1;6R", 0, 0},
+    {XK_F3, /* F51 */ Mod1Mask, "\033[1;3R", 0, 0},
+    {XK_F3, /* F63 */ Mod3Mask, "\033[1;4R", 0, 0},
+    {XK_F4, XK_NO_MOD, "\033OS", 0, 0},
+    {XK_F4, /* F16 */ ShiftMask, "\033[1;2S", 0, 0},
+    {XK_F4, /* F28 */ ControlMask, "\033[1;5S", 0, 0},
+    {XK_F4, /* F40 */ Mod4Mask, "\033[1;6S", 0, 0},
+    {XK_F4, /* F52 */ Mod1Mask, "\033[1;3S", 0, 0},
+    {XK_F5, XK_NO_MOD, "\033[15~", 0, 0},
+    {XK_F5, /* F17 */ ShiftMask, "\033[15;2~", 0, 0},
+    {XK_F5, /* F29 */ ControlMask, "\033[15;5~", 0, 0},
+    {XK_F5, /* F41 */ Mod4Mask, "\033[15;6~", 0, 0},
+    {XK_F5, /* F53 */ Mod1Mask, "\033[15;3~", 0, 0},
+    {XK_F6, XK_NO_MOD, "\033[17~", 0, 0},
+    {XK_F6, /* F18 */ ShiftMask, "\033[17;2~", 0, 0},
+    {XK_F6, /* F30 */ ControlMask, "\033[17;5~", 0, 0},
+    {XK_F6, /* F42 */ Mod4Mask, "\033[17;6~", 0, 0},
+    {XK_F6, /* F54 */ Mod1Mask, "\033[17;3~", 0, 0},
+    {XK_F7, XK_NO_MOD, "\033[18~", 0, 0},
+    {XK_F7, /* F19 */ ShiftMask, "\033[18;2~", 0, 0},
+    {XK_F7, /* F31 */ ControlMask, "\033[18;5~", 0, 0},
+    {XK_F7, /* F43 */ Mod4Mask, "\033[18;6~", 0, 0},
+    {XK_F7, /* F55 */ Mod1Mask, "\033[18;3~", 0, 0},
+    {XK_F8, XK_NO_MOD, "\033[19~", 0, 0},
+    {XK_F8, /* F20 */ ShiftMask, "\033[19;2~", 0, 0},
+    {XK_F8, /* F32 */ ControlMask, "\033[19;5~", 0, 0},
+    {XK_F8, /* F44 */ Mod4Mask, "\033[19;6~", 0, 0},
+    {XK_F8, /* F56 */ Mod1Mask, "\033[19;3~", 0, 0},
+    {XK_F9, XK_NO_MOD, "\033[20~", 0, 0},
+    {XK_F9, /* F21 */ ShiftMask, "\033[20;2~", 0, 0},
+    {XK_F9, /* F33 */ ControlMask, "\033[20;5~", 0, 0},
+    {XK_F9, /* F45 */ Mod4Mask, "\033[20;6~", 0, 0},
+    {XK_F9, /* F57 */ Mod1Mask, "\033[20;3~", 0, 0},
+    {XK_F10, XK_NO_MOD, "\033[21~", 0, 0},
+    {XK_F10, /* F22 */ ShiftMask, "\033[21;2~", 0, 0},
+    {XK_F10, /* F34 */ ControlMask, "\033[21;5~", 0, 0},
+    {XK_F10, /* F46 */ Mod4Mask, "\033[21;6~", 0, 0},
+    {XK_F10, /* F58 */ Mod1Mask, "\033[21;3~", 0, 0},
+    {XK_F11, XK_NO_MOD, "\033[23~", 0, 0},
+    {XK_F11, /* F23 */ ShiftMask, "\033[23;2~", 0, 0},
+    {XK_F11, /* F35 */ ControlMask, "\033[23;5~", 0, 0},
+    {XK_F11, /* F47 */ Mod4Mask, "\033[23;6~", 0, 0},
+    {XK_F11, /* F59 */ Mod1Mask, "\033[23;3~", 0, 0},
+    {XK_F12, XK_NO_MOD, "\033[24~", 0, 0},
+    {XK_F12, /* F24 */ ShiftMask, "\033[24;2~", 0, 0},
+    {XK_F12, /* F36 */ ControlMask, "\033[24;5~", 0, 0},
+    {XK_F12, /* F48 */ Mod4Mask, "\033[24;6~", 0, 0},
+    {XK_F12, /* F60 */ Mod1Mask, "\033[24;3~", 0, 0},
+    {XK_F13, XK_NO_MOD, "\033[1;2P", 0, 0},
+    {XK_F14, XK_NO_MOD, "\033[1;2Q", 0, 0},
+    {XK_F15, XK_NO_MOD, "\033[1;2R", 0, 0},
+    {XK_F16, XK_NO_MOD, "\033[1;2S", 0, 0},
+    {XK_F17, XK_NO_MOD, "\033[15;2~", 0, 0},
+    {XK_F18, XK_NO_MOD, "\033[17;2~", 0, 0},
+    {XK_F19, XK_NO_MOD, "\033[18;2~", 0, 0},
+    {XK_F20, XK_NO_MOD, "\033[19;2~", 0, 0},
+    {XK_F21, XK_NO_MOD, "\033[20;2~", 0, 0},
+    {XK_F22, XK_NO_MOD, "\033[21;2~", 0, 0},
+    {XK_F23, XK_NO_MOD, "\033[23;2~", 0, 0},
+    {XK_F24, XK_NO_MOD, "\033[24;2~", 0, 0},
+    {XK_F25, XK_NO_MOD, "\033[1;5P", 0, 0},
+    {XK_F26, XK_NO_MOD, "\033[1;5Q", 0, 0},
+    {XK_F27, XK_NO_MOD, "\033[1;5R", 0, 0},
+    {XK_F28, XK_NO_MOD, "\033[1;5S", 0, 0},
+    {XK_F29, XK_NO_MOD, "\033[15;5~", 0, 0},
+    {XK_F30, XK_NO_MOD, "\033[17;5~", 0, 0},
+    {XK_F31, XK_NO_MOD, "\033[18;5~", 0, 0},
+    {XK_F32, XK_NO_MOD, "\033[19;5~", 0, 0},
+    {XK_F33, XK_NO_MOD, "\033[20;5~", 0, 0},
+    {XK_F34, XK_NO_MOD, "\033[21;5~", 0, 0},
+    {XK_F35, XK_NO_MOD, "\033[23;5~", 0, 0},
+};
+
+/*
+ * Selection types' masks.
+ * Use the same masks as usual.
+ * Button1Mask is always unset, to make masks match between ButtonPress.
+ * ButtonRelease and MotionNotify.
+ * If no match is found, regular selection is used.
+ */
+static uint selmasks[] = {
+    [SEL_RECTANGULAR] = Mod1Mask,
+};
+
+/*
+ * Printable characters in ASCII, used to estimate the advance width
+ * of single wide characters.
+ */
+static char ascii_printable[] = " !\"#$%&'()*+,-./0123456789:;<=>?"
+                                "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_"
+                                "`abcdefghijklmnopqrstuvwxyz{|}~";
diff --git a/config.mk b/config.mk
new file mode 100644
index 0000000..4c4c5d5
--- /dev/null
+++ b/config.mk
@@ -0,0 +1,35 @@
+# st version
+VERSION = 0.8.5
+
+# Customize below to fit your system
+
+# paths
+PREFIX = /usr/local
+MANPREFIX = $(PREFIX)/share/man
+
+X11INC = /usr/X11R6/include
+X11LIB = /usr/X11R6/lib
+
+PKG_CONFIG = pkg-config
+
+# includes and libs
+INCS = -I$(X11INC) \
+       `$(PKG_CONFIG) --cflags fontconfig` \
+       `$(PKG_CONFIG) --cflags freetype2`
+LIBS = -L$(X11LIB) -lm -lrt -lX11 -lutil -lXft \
+       `$(PKG_CONFIG) --libs fontconfig` \
+       `$(PKG_CONFIG) --libs freetype2`
+
+# flags
+STCPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600
+STCFLAGS = $(INCS) $(STCPPFLAGS) $(CPPFLAGS) $(CFLAGS)
+STLDFLAGS = $(LIBS) $(LDFLAGS)
+
+# OpenBSD:
+#CPPFLAGS = -DVERSION=\"$(VERSION)\" -D_XOPEN_SOURCE=600 -D_BSD_SOURCE
+#LIBS = -L$(X11LIB) -lm -lX11 -lutil -lXft \
+#       `$(PKG_CONFIG) --libs fontconfig` \
+#       `$(PKG_CONFIG) --libs freetype2`
+
+# compiler and linker
+# CC = c99
diff --git a/st-blinking_cursor-20211116-2f6e597.diff b/st-blinking_cursor-20211116-2f6e597.diff
new file mode 100644
index 0000000..91c871a
--- /dev/null
+++ b/st-blinking_cursor-20211116-2f6e597.diff
@@ -0,0 +1,153 @@
+From a3cdd0753bf578cd4e6db7c6507481f3b5c38aea Mon Sep 17 00:00:00 2001
+From: Steve Ward <planet36@gmail.com>
+Date: Tue, 16 Nov 2021 14:15:06 -0500
+Subject: [PATCH] Allow blinking cursor
+
+---
+ config.def.h | 19 +++++++++++++------
+ x.c          | 47 +++++++++++++++++++++++++++++++++++------------
+ 2 files changed, 48 insertions(+), 18 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 6f05dce..1a5fed0 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -133,13 +133,20 @@ static unsigned int defaultcs = 256;
+ static unsigned int defaultrcs = 257;
+ 
+ /*
+- * Default shape of cursor
+- * 2: Block ("█")
+- * 4: Underline ("_")
+- * 6: Bar ("|")
+- * 7: Snowman ("☃")
++ * https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h4-Functions-using-CSI-_-ordered-by-the-final-character-lparen-s-rparen:CSI-Ps-SP-q.1D81
++ * Default style of cursor
++ * 0: blinking block
++ * 1: blinking block (default)
++ * 2: steady block ("█")
++ * 3: blinking underline
++ * 4: steady underline ("_")
++ * 5: blinking bar
++ * 6: steady bar ("|")
++ * 7: blinking st cursor
++ * 8: steady st cursor
+  */
+-static unsigned int cursorshape = 2;
++static unsigned int cursorstyle = 1;
++static Rune stcursor = 0x2603; /* snowman ("☃") */
+ 
+ /*
+  * Default columns and rows numbers
+diff --git a/x.c b/x.c
+index 89786b8..7d2447d 100644
+--- a/x.c
++++ b/x.c
+@@ -253,6 +253,7 @@ static char *opt_name  = NULL;
+ static char *opt_title = NULL;
+ 
+ static int oldbutton = 3; /* button event on startup: 3 = release */
++static int cursorblinks = 0;
+ 
+ void
+ clipcopy(const Arg *dummy)
+@@ -1529,29 +1530,44 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
+ 	/* draw the new one */
+ 	if (IS_SET(MODE_FOCUSED)) {
+ 		switch (win.cursor) {
+-		case 7: /* st extension */
+-			g.u = 0x2603; /* snowman (U+2603) */
++		default:
++		case 0: /* blinking block */
++		case 1: /* blinking block (default) */
++			if (IS_SET(MODE_BLINK))
++				break;
+ 			/* FALLTHROUGH */
+-		case 0: /* Blinking Block */
+-		case 1: /* Blinking Block (Default) */
+-		case 2: /* Steady Block */
++		case 2: /* steady block */
+ 			xdrawglyph(g, cx, cy);
+ 			break;
+-		case 3: /* Blinking Underline */
+-		case 4: /* Steady Underline */
++		case 3: /* blinking underline */
++			if (IS_SET(MODE_BLINK))
++				break;
++			/* FALLTHROUGH */
++		case 4: /* steady underline */
+ 			XftDrawRect(xw.draw, &drawcol,
+ 					borderpx + cx * win.cw,
+ 					borderpx + (cy + 1) * win.ch - \
+ 						cursorthickness,
+ 					win.cw, cursorthickness);
+ 			break;
+-		case 5: /* Blinking bar */
+-		case 6: /* Steady bar */
++		case 5: /* blinking bar */
++			if (IS_SET(MODE_BLINK))
++				break;
++			/* FALLTHROUGH */
++		case 6: /* steady bar */
+ 			XftDrawRect(xw.draw, &drawcol,
+ 					borderpx + cx * win.cw,
+ 					borderpx + cy * win.ch,
+ 					cursorthickness, win.ch);
+ 			break;
++		case 7: /* blinking st cursor */
++			if (IS_SET(MODE_BLINK))
++				break;
++			/* FALLTHROUGH */
++		case 8: /* steady st cursor */
++			g.u = stcursor;
++			xdrawglyph(g, cx, cy);
++			break;
+ 		}
+ 	} else {
+ 		XftDrawRect(xw.draw, &drawcol,
+@@ -1708,9 +1724,12 @@ xsetmode(int set, unsigned int flags)
+ int
+ xsetcursor(int cursor)
+ {
+-	if (!BETWEEN(cursor, 0, 7)) /* 7: st extension */
++	if (!BETWEEN(cursor, 0, 8)) /* 7-8: st extensions */
+ 		return 1;
+ 	win.cursor = cursor;
++	cursorblinks = win.cursor == 0 || win.cursor == 1 ||
++	               win.cursor == 3 || win.cursor == 5 ||
++	               win.cursor == 7;
+ 	return 0;
+ }
+ 
+@@ -1954,6 +1973,10 @@ run(void)
+ 		if (FD_ISSET(ttyfd, &rfd) || xev) {
+ 			if (!drawing) {
+ 				trigger = now;
++				if (IS_SET(MODE_BLINK)) {
++					win.mode ^= MODE_BLINK;
++				}
++				lastblink = now;
+ 				drawing = 1;
+ 			}
+ 			timeout = (maxlatency - TIMEDIFF(now, trigger)) \
+@@ -1964,7 +1987,7 @@ run(void)
+ 
+ 		/* idle detected or maxlatency exhausted -> draw */
+ 		timeout = -1;
+-		if (blinktimeout && tattrset(ATTR_BLINK)) {
++		if (blinktimeout && (cursorblinks || tattrset(ATTR_BLINK))) {
+ 			timeout = blinktimeout - TIMEDIFF(now, lastblink);
+ 			if (timeout <= 0) {
+ 				if (-timeout > blinktimeout) /* start visible */
+@@ -2000,7 +2023,7 @@ main(int argc, char *argv[])
+ {
+ 	xw.l = xw.t = 0;
+ 	xw.isfixed = False;
+-	xsetcursor(cursorshape);
++	xsetcursor(cursorstyle);
+ 
+ 	ARGBEGIN {
+ 	case 'a':
+-- 
+2.34.0
+
diff --git a/st-bold-is-not-bright-20190127-3be4cf1.diff b/st-bold-is-not-bright-20190127-3be4cf1.diff
new file mode 100644
index 0000000..dd3e5bf
--- /dev/null
+++ b/st-bold-is-not-bright-20190127-3be4cf1.diff
@@ -0,0 +1,27 @@
+From e8f3c86d93613eef5af187dfd2dba9ae9919a2ee Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rapha=C3=ABl=20Proust?= <code@bnwr.net>
+Date: Sun, 27 Jan 2019 13:31:28 +0800
+Subject: [PATCH] Show bold not as bright
+
+---
+ x.c | 4 ----
+ 1 file changed, 4 deletions(-)
+
+diff --git a/x.c b/x.c
+index 0422421..904e1dc 100644
+--- a/x.c
++++ b/x.c
+@@ -1296,10 +1296,6 @@ xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, i
+ 		bg = &dc.col[base.bg];
+ 	}
+ 
+-	/* Change basic system colors [0-7] to bright system colors [8-15] */
+-	if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
+-		fg = &dc.col[base.fg + 8];
+-
+ 	if (IS_SET(MODE_REVERSE)) {
+ 		if (fg == &dc.col[defaultfg]) {
+ 			fg = &dc.col[defaultbg];
+-- 
+2.20.1
+
diff --git a/st-clipboard-0.8.3.diff b/st-clipboard-0.8.3.diff
new file mode 100644
index 0000000..c1e0e9e
--- /dev/null
+++ b/st-clipboard-0.8.3.diff
@@ -0,0 +1,12 @@
+diff --git a/x.c b/x.c
+index e5f1737..5cabd60 100644
+--- a/x.c
++++ b/x.c
+@@ -673,6 +673,7 @@ setsel(char *str, Time t)
+ 	XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
+ 	if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
+ 		selclear();
++	clipcopy(NULL);
+ }
+ 
+ void
diff --git a/st-dynamic-cursor-color-0.8.4.diff b/st-dynamic-cursor-color-0.8.4.diff
new file mode 100644
index 0000000..a763d6d
--- /dev/null
+++ b/st-dynamic-cursor-color-0.8.4.diff
@@ -0,0 +1,52 @@
+From 01e706efbc13194a4a4404e91b93a9638a3c1bea Mon Sep 17 00:00:00 2001
+From: Kipras Melnikovas <kipras@kipras.org>
+Date: Thu, 25 Feb 2021 14:31:26 +0200
+Subject: [PATCH] refactor dynamic-cursor-color patch
+
+Signed-off-by: Kipras Melnikovas <kipras@kipras.org>
+---
+ x.c | 19 +++++++++++++++++--
+ 1 file changed, 17 insertions(+), 2 deletions(-)
+
+diff --git a/x.c b/x.c
+index 120e495..ab66364 100644
+--- a/x.c
++++ b/x.c
+@@ -1489,6 +1489,7 @@ void
+ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
+ {
+ 	Color drawcol;
++	XRenderColor colbg;
+ 
+ 	/* remove the old cursor */
+ 	if (selected(ox, oy))
+@@ -1518,10 +1519,24 @@ xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
+ 			g.fg = defaultfg;
+ 			g.bg = defaultrcs;
+ 		} else {
++			/** this is the main part of the dynamic cursor color patch */
++			g.bg = g.fg;
+ 			g.fg = defaultbg;
+-			g.bg = defaultcs;
+ 		}
+-		drawcol = dc.col[g.bg];
++
++		/**
++		 * and this is the second part of the dynamic cursor color patch.
++		 * it handles the `drawcol` variable
++		*/
++		if (IS_TRUECOL(g.bg)) {
++			colbg.alpha = 0xffff;
++			colbg.red = TRUERED(g.bg);
++			colbg.green = TRUEGREEN(g.bg);
++			colbg.blue = TRUEBLUE(g.bg);
++			XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &drawcol);
++		} else {
++			drawcol = dc.col[g.bg];
++		}
+ 	}
+ 
+ 	/* draw the new one */
+-- 
+2.30.1
+
diff --git a/st-font2-20190416-ba72400.diff b/st-font2-20190416-ba72400.diff
new file mode 100644
index 0000000..c7a2950
--- /dev/null
+++ b/st-font2-20190416-ba72400.diff
@@ -0,0 +1,167 @@
+From ba724004c6a368e452114f7dc147a9978fe0f3b4 Mon Sep 17 00:00:00 2001
+From: Kirill Bugaev <kirill.bugaev87@gmail.com>
+Date: Tue, 16 Apr 2019 04:31:30 +0800
+Subject: [PATCH] This patch allows to add spare font besides default. Some
+ glyphs can be not present in default font. For this glyphs st uses
+ font-config and try to find them in font cache first. This patch append fonts
+ defined in font2 variable to the beginning of font cache. So they will be
+ used first for glyphs that absent in default font.
+
+---
+ config.def.h |   6 +++
+ x.c          | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 107 insertions(+)
+
+diff --git a/config.def.h b/config.def.h
+index 482901e..676719e 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -6,6 +6,12 @@
+  * font: see http://freedesktop.org/software/fontconfig/fontconfig-user.html
+  */
+ static char *font = "Liberation Mono:pixelsize=12:antialias=true:autohint=true";
++/* Spare fonts */
++static char *font2[] = {
++/*	"Inconsolata for Powerline:pixelsize=12:antialias=true:autohint=true", */
++/*	"Hack Nerd Font Mono:pixelsize=11:antialias=true:autohint=true", */
++};
++
+ static int borderpx = 2;
+ 
+ /*
+diff --git a/x.c b/x.c
+index 5828a3b..d37e59d 100644
+--- a/x.c
++++ b/x.c
+@@ -149,6 +149,8 @@ static void xhints(void);
+ static int xloadcolor(int, const char *, Color *);
+ static int xloadfont(Font *, FcPattern *);
+ static void xloadfonts(char *, double);
++static int xloadsparefont(FcPattern *, int);
++static void xloadsparefonts(void);
+ static void xunloadfont(Font *);
+ static void xunloadfonts(void);
+ static void xsetenv(void);
+@@ -296,6 +298,7 @@ zoomabs(const Arg *arg)
+ {
+ 	xunloadfonts();
+ 	xloadfonts(usedfont, arg->f);
++	xloadsparefonts();
+ 	cresize(0, 0);
+ 	redraw();
+ 	xhints();
+@@ -977,6 +980,101 @@ xloadfonts(char *fontstr, double fontsize)
+ 	FcPatternDestroy(pattern);
+ }
+ 
++int
++xloadsparefont(FcPattern *pattern, int flags)
++{
++	FcPattern *match;
++	FcResult result;
++	
++	match = FcFontMatch(NULL, pattern, &result);
++	if (!match) {
++		return 1;
++	}
++
++	if (!(frc[frclen].font = XftFontOpenPattern(xw.dpy, match))) {
++		FcPatternDestroy(match);
++		return 1;
++	}
++
++	frc[frclen].flags = flags;
++	/* Believe U+0000 glyph will present in each default font */
++	frc[frclen].unicodep = 0;
++	frclen++;
++
++	return 0;
++}
++
++void
++xloadsparefonts(void)
++{
++	FcPattern *pattern;
++	double sizeshift, fontval;
++	int fc;
++	char **fp;
++
++	if (frclen != 0)
++		die("can't embed spare fonts. cache isn't empty");
++
++	/* Calculate count of spare fonts */
++	fc = sizeof(font2) / sizeof(*font2);
++	if (fc == 0)
++		return;
++
++	/* Allocate memory for cache entries. */
++	if (frccap < 4 * fc) {
++		frccap += 4 * fc - frccap;
++		frc = xrealloc(frc, frccap * sizeof(Fontcache));
++	}
++
++	for (fp = font2; fp - font2 < fc; ++fp) {
++	
++		if (**fp == '-')
++			pattern = XftXlfdParse(*fp, False, False);
++		else
++			pattern = FcNameParse((FcChar8 *)*fp);
++	
++		if (!pattern)
++			die("can't open spare font %s\n", *fp);
++	   		
++		if (defaultfontsize > 0) {
++			sizeshift = usedfontsize - defaultfontsize;
++			if (sizeshift != 0 &&
++					FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
++					FcResultMatch) {	
++				fontval += sizeshift;
++				FcPatternDel(pattern, FC_PIXEL_SIZE);
++				FcPatternDel(pattern, FC_SIZE);
++				FcPatternAddDouble(pattern, FC_PIXEL_SIZE, fontval);
++			}
++		}
++	
++		FcPatternAddBool(pattern, FC_SCALABLE, 1);
++	
++		FcConfigSubstitute(NULL, pattern, FcMatchPattern);
++		XftDefaultSubstitute(xw.dpy, xw.scr, pattern);
++	
++		if (xloadsparefont(pattern, FRC_NORMAL))
++			die("can't open spare font %s\n", *fp);
++	
++		FcPatternDel(pattern, FC_SLANT);
++		FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
++		if (xloadsparefont(pattern, FRC_ITALIC))
++			die("can't open spare font %s\n", *fp);
++			
++		FcPatternDel(pattern, FC_WEIGHT);
++		FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
++		if (xloadsparefont(pattern, FRC_ITALICBOLD))
++			die("can't open spare font %s\n", *fp);
++	
++		FcPatternDel(pattern, FC_SLANT);
++		FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
++		if (xloadsparefont(pattern, FRC_BOLD))
++			die("can't open spare font %s\n", *fp);
++	
++		FcPatternDestroy(pattern);
++	}
++}
++
+ void
+ xunloadfont(Font *f)
+ {
+@@ -1057,6 +1155,9 @@ xinit(int cols, int rows)
+ 	usedfont = (opt_font == NULL)? font : opt_font;
+ 	xloadfonts(usedfont, 0);
+ 
++	/* spare fonts */
++	xloadsparefonts();
++
+ 	/* colors */
+ 	xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
+ 	xloadcols();
+-- 
+2.21.0
+
diff --git a/st-w3m-0.8.3.diff b/st-w3m-0.8.3.diff
new file mode 100644
index 0000000..a4e104b
--- /dev/null
+++ b/st-w3m-0.8.3.diff
@@ -0,0 +1,42 @@
+From 69cffc587b54b0a9cd81adb87abad8e526d5b25b Mon Sep 17 00:00:00 2001
+From: "Avi Halachmi (:avih)" <avihpit@yahoo.com>
+Date: Thu, 4 Jun 2020 17:35:08 +0300
+Subject: [PATCH] support w3m images
+
+w3m images are a hack which renders on top of the terminal's drawable,
+which didn't work in st because when using double buffering, the front
+buffer (on which w3m draws its images) is ignored, and st draws only
+on the back buffer, which is then copied to the front buffer.
+
+There's a patch to make it work at the FAQ already, but that patch
+canceles double-buffering, which can have negative side effects on
+some cases such as flickering.
+
+This patch achieves the same goal but instead of canceling the double
+buffer it first copies the front buffer to the back buffer.
+
+This has the same issues as the FAQ patch in that the cursor line is
+deleted at the image (because st renders always full lines), but
+otherwise it's simpler and does keeps double buffering.
+---
+ x.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/x.c b/x.c
+index e5f1737..b6ae162 100644
+--- a/x.c
++++ b/x.c
+@@ -1594,6 +1594,8 @@ xsettitle(char *p)
+ int
+ xstartdraw(void)
+ {
++	if (IS_SET(MODE_VISIBLE))
++		XCopyArea(xw.dpy, xw.win, xw.buf, dc.gc, 0, 0, win.w, win.h, 0, 0);
+ 	return IS_SET(MODE_VISIBLE);
+ }
+ 
+
+base-commit: 43a395ae91f7d67ce694e65edeaa7bbc720dd027
+-- 
+2.17.1
+
diff --git a/st-xresources-20200604-9ba7ecf.diff b/st-xresources-20200604-9ba7ecf.diff
new file mode 100644
index 0000000..78ba00a
--- /dev/null
+++ b/st-xresources-20200604-9ba7ecf.diff
@@ -0,0 +1,184 @@
+From 2752a599ee01305a435729bfacf43b1dde7cf0ef Mon Sep 17 00:00:00 2001
+From: Benji Encalada Mora <benji@encalada.dev>
+Date: Thu, 4 Jun 2020 00:41:10 -0500
+Subject: [PATCH] fix: replace xfps and actionfps variables
+
+---
+ config.def.h | 36 ++++++++++++++++++++++++
+ x.c          | 78 +++++++++++++++++++++++++++++++++++++++++++++++++---
+ 2 files changed, 110 insertions(+), 4 deletions(-)
+
+diff --git a/config.def.h b/config.def.h
+index 6f05dce..9b99782 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -168,6 +168,42 @@ static unsigned int defaultattr = 11;
+  */
+ static uint forcemousemod = ShiftMask;
+ 
++/*
++ * Xresources preferences to load at startup
++ */
++ResourcePref resources[] = {
++		{ "font",         STRING,  &font },
++		{ "color0",       STRING,  &colorname[0] },
++		{ "color1",       STRING,  &colorname[1] },
++		{ "color2",       STRING,  &colorname[2] },
++		{ "color3",       STRING,  &colorname[3] },
++		{ "color4",       STRING,  &colorname[4] },
++		{ "color5",       STRING,  &colorname[5] },
++		{ "color6",       STRING,  &colorname[6] },
++		{ "color7",       STRING,  &colorname[7] },
++		{ "color8",       STRING,  &colorname[8] },
++		{ "color9",       STRING,  &colorname[9] },
++		{ "color10",      STRING,  &colorname[10] },
++		{ "color11",      STRING,  &colorname[11] },
++		{ "color12",      STRING,  &colorname[12] },
++		{ "color13",      STRING,  &colorname[13] },
++		{ "color14",      STRING,  &colorname[14] },
++		{ "color15",      STRING,  &colorname[15] },
++		{ "background",   STRING,  &colorname[256] },
++		{ "foreground",   STRING,  &colorname[257] },
++		{ "cursorColor",  STRING,  &colorname[258] },
++		{ "termname",     STRING,  &termname },
++		{ "shell",        STRING,  &shell },
++		{ "minlatency",   INTEGER, &minlatency },
++		{ "maxlatency",   INTEGER, &maxlatency },
++		{ "blinktimeout", INTEGER, &blinktimeout },
++		{ "bellvolume",   INTEGER, &bellvolume },
++		{ "tabspaces",    INTEGER, &tabspaces },
++		{ "borderpx",     INTEGER, &borderpx },
++		{ "cwscale",      FLOAT,   &cwscale },
++		{ "chscale",      FLOAT,   &chscale },
++};
++
+ /*
+  * Internal mouse shortcuts.
+  * Beware that overloading Button1 will disable the selection.
+diff --git a/x.c b/x.c
+index 210f184..76f167f 100644
+--- a/x.c
++++ b/x.c
+@@ -14,6 +14,7 @@
+ #include <X11/keysym.h>
+ #include <X11/Xft/Xft.h>
+ #include <X11/XKBlib.h>
++#include <X11/Xresource.h>
+ 
+ char *argv0;
+ #include "arg.h"
+@@ -45,6 +46,19 @@ typedef struct {
+ 	signed char appcursor; /* application cursor */
+ } Key;
+ 
++/* Xresources preferences */
++enum resource_type {
++	STRING = 0,
++	INTEGER = 1,
++	FLOAT = 2
++};
++
++typedef struct {
++	char *name;
++	enum resource_type type;
++	void *dst;
++} ResourcePref;
++
+ /* X modifiers */
+ #define XK_ANY_MOD    UINT_MAX
+ #define XK_NO_MOD     0
+@@ -828,8 +842,8 @@ xclear(int x1, int y1, int x2, int y2)
+ void
+ xhints(void)
+ {
+-	XClassHint class = {opt_name ? opt_name : termname,
+-	                    opt_class ? opt_class : termname};
++	XClassHint class = {opt_name ? opt_name : "st",
++	                    opt_class ? opt_class : "St"};
+ 	XWMHints wm = {.flags = InputHint, .input = 1};
+ 	XSizeHints *sizeh;
+ 
+@@ -1104,8 +1118,6 @@ xinit(int cols, int rows)
+ 	pid_t thispid = getpid();
+ 	XColor xmousefg, xmousebg;
+ 
+-	if (!(xw.dpy = XOpenDisplay(NULL)))
+-		die("can't open display\n");
+ 	xw.scr = XDefaultScreen(xw.dpy);
+ 	xw.vis = XDefaultVisual(xw.dpy, xw.scr);
+ 
+@@ -1964,6 +1976,59 @@ run(void)
+ 	}
+ }
+ 
++int
++resource_load(XrmDatabase db, char *name, enum resource_type rtype, void *dst)
++{
++	char **sdst = dst;
++	int *idst = dst;
++	float *fdst = dst;
++
++	char fullname[256];
++	char fullclass[256];
++	char *type;
++	XrmValue ret;
++
++	snprintf(fullname, sizeof(fullname), "%s.%s",
++			opt_name ? opt_name : "st", name);
++	snprintf(fullclass, sizeof(fullclass), "%s.%s",
++			opt_class ? opt_class : "St", name);
++	fullname[sizeof(fullname) - 1] = fullclass[sizeof(fullclass) - 1] = '\0';
++
++	XrmGetResource(db, fullname, fullclass, &type, &ret);
++	if (ret.addr == NULL || strncmp("String", type, 64))
++		return 1;
++
++	switch (rtype) {
++	case STRING:
++		*sdst = ret.addr;
++		break;
++	case INTEGER:
++		*idst = strtoul(ret.addr, NULL, 10);
++		break;
++	case FLOAT:
++		*fdst = strtof(ret.addr, NULL);
++		break;
++	}
++	return 0;
++}
++
++void
++config_init(void)
++{
++	char *resm;
++	XrmDatabase db;
++	ResourcePref *p;
++
++	XrmInitialize();
++	resm = XResourceManagerString(xw.dpy);
++	if (!resm)
++		return;
++
++	db = XrmGetStringDatabase(resm);
++	for (p = resources; p < resources + LEN(resources); p++)
++		resource_load(db, p->name, p->type, p->dst);
++}
++
+ void
+ usage(void)
+ {
+@@ -2037,6 +2102,11 @@ run:
+ 
+ 	setlocale(LC_CTYPE, "");
+ 	XSetLocaleModifiers("");
++
++	if(!(xw.dpy = XOpenDisplay(NULL)))
++		die("Can't open display\n");
++
++	config_init();
+ 	cols = MAX(cols, 1);
+ 	rows = MAX(rows, 1);
+ 	tnew(cols, rows);
+-- 
+2.26.2
+
diff --git a/st.1 b/st.1
new file mode 100644
index 0000000..39120b4
--- /dev/null
+++ b/st.1
@@ -0,0 +1,177 @@
+.TH ST 1 st\-VERSION
+.SH NAME
+st \- simple terminal
+.SH SYNOPSIS
+.B st
+.RB [ \-aiv ]
+.RB [ \-c
+.IR class ]
+.RB [ \-f
+.IR font ]
+.RB [ \-g
+.IR geometry ]
+.RB [ \-n
+.IR name ]
+.RB [ \-o
+.IR iofile ]
+.RB [ \-T
+.IR title ]
+.RB [ \-t
+.IR title ]
+.RB [ \-l
+.IR line ]
+.RB [ \-w
+.IR windowid ]
+.RB [[ \-e ]
+.IR command
+.RI [ arguments ...]]
+.PP
+.B st
+.RB [ \-aiv ]
+.RB [ \-c
+.IR class ]
+.RB [ \-f
+.IR font ]
+.RB [ \-g
+.IR geometry ]
+.RB [ \-n
+.IR name ]
+.RB [ \-o
+.IR iofile ]
+.RB [ \-T
+.IR title ]
+.RB [ \-t
+.IR title ]
+.RB [ \-w
+.IR windowid ]
+.RB \-l
+.IR line
+.RI [ stty_args ...]
+.SH DESCRIPTION
+.B st
+is a simple terminal emulator.
+.SH OPTIONS
+.TP
+.B \-a
+disable alternate screens in terminal
+.TP
+.BI \-c " class"
+defines the window class (default $TERM).
+.TP
+.BI \-f " font"
+defines the
+.I font
+to use when st is run.
+.TP
+.BI \-g " geometry"
+defines the X11 geometry string.
+The form is [=][<cols>{xX}<rows>][{+-}<xoffset>{+-}<yoffset>]. See
+.BR XParseGeometry (3)
+for further details.
+.TP
+.B \-i
+will fixate the position given with the -g option.
+.TP
+.BI \-n " name"
+defines the window instance name (default $TERM).
+.TP
+.BI \-o " iofile"
+writes all the I/O to
+.I iofile.
+This feature is useful when recording st sessions. A value of "-" means
+standard output.
+.TP
+.BI \-T " title"
+defines the window title (default 'st').
+.TP
+.BI \-t " title"
+defines the window title (default 'st').
+.TP
+.BI \-w " windowid"
+embeds st within the window identified by
+.I windowid
+.TP
+.BI \-l " line"
+use a tty
+.I line
+instead of a pseudo terminal.
+.I line
+should be a (pseudo-)serial device (e.g. /dev/ttyS0 on Linux for serial port
+0).
+When this flag is given
+remaining arguments are used as flags for
+.BR stty(1).
+By default st initializes the serial line to 8 bits, no parity, 1 stop bit
+and a 38400 baud rate. The speed is set by appending it as last argument
+(e.g. 'st -l /dev/ttyS0 115200'). Arguments before the last one are
+.BR stty(1)
+flags. If you want to set odd parity on 115200 baud use for example 'st -l
+/dev/ttyS0 parenb parodd 115200'. Set the number of bits by using for
+example 'st -l /dev/ttyS0 cs7 115200'. See
+.BR stty(1)
+for more arguments and cases.
+.TP
+.B \-v
+prints version information to stderr, then exits.
+.TP
+.BI \-e " command " [ " arguments " "... ]"
+st executes
+.I command
+instead of the shell.  If this is used it
+.B must be the last option
+on the command line, as in xterm / rxvt.
+This option is only intended for compatibility,
+and all the remaining arguments are used as a command
+even without it.
+.SH SHORTCUTS
+.TP
+.B Break
+Send a break in the serial line.
+Break key is obtained in PC keyboards
+pressing at the same time control and pause.
+.TP
+.B Ctrl-Print Screen
+Toggle if st should print to the
+.I iofile.
+.TP
+.B Shift-Print Screen
+Print the full screen to the
+.I iofile.
+.TP
+.B Print Screen
+Print the selection to the
+.I iofile.
+.TP
+.B Ctrl-Shift-Page Up
+Increase font size.
+.TP
+.B Ctrl-Shift-Page Down
+Decrease font size.
+.TP
+.B Ctrl-Shift-Home
+Reset to default font size.
+.TP
+.B Ctrl-Shift-y
+Paste from primary selection (middle mouse button).
+.TP
+.B Ctrl-Shift-c
+Copy the selected text to the clipboard selection.
+.TP
+.B Ctrl-Shift-v
+Paste from the clipboard selection.
+.SH CUSTOMIZATION
+.B st
+can be customized by creating a custom config.h and (re)compiling the source
+code. This keeps it fast, secure and simple.
+.SH AUTHORS
+See the LICENSE file for the authors.
+.SH LICENSE
+See the LICENSE file for the terms of redistribution.
+.SH SEE ALSO
+.BR tabbed (1),
+.BR utmp (1),
+.BR stty (1),
+.BR scroll (1)
+.SH BUGS
+See the TODO file in the distribution.
+
diff --git a/st.c b/st.c
new file mode 100644
index 0000000..51049ba
--- /dev/null
+++ b/st.c
@@ -0,0 +1,2690 @@
+/* See LICENSE for license details. */
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <pwd.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/select.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <termios.h>
+#include <unistd.h>
+#include <wchar.h>
+
+#include "st.h"
+#include "win.h"
+
+#if   defined(__linux)
+ #include <pty.h>
+#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
+ #include <util.h>
+#elif defined(__FreeBSD__) || defined(__DragonFly__)
+ #include <libutil.h>
+#endif
+
+/* Arbitrary sizes */
+#define UTF_INVALID   0xFFFD
+#define UTF_SIZ       4
+#define ESC_BUF_SIZ   (128*UTF_SIZ)
+#define ESC_ARG_SIZ   16
+#define STR_BUF_SIZ   ESC_BUF_SIZ
+#define STR_ARG_SIZ   ESC_ARG_SIZ
+
+/* macros */
+#define IS_SET(flag)		((term.mode & (flag)) != 0)
+#define ISCONTROLC0(c)		(BETWEEN(c, 0, 0x1f) || (c) == 0x7f)
+#define ISCONTROLC1(c)		(BETWEEN(c, 0x80, 0x9f))
+#define ISCONTROL(c)		(ISCONTROLC0(c) || ISCONTROLC1(c))
+#define ISDELIM(u)		(u && wcschr(worddelimiters, u))
+
+enum term_mode {
+	MODE_WRAP        = 1 << 0,
+	MODE_INSERT      = 1 << 1,
+	MODE_ALTSCREEN   = 1 << 2,
+	MODE_CRLF        = 1 << 3,
+	MODE_ECHO        = 1 << 4,
+	MODE_PRINT       = 1 << 5,
+	MODE_UTF8        = 1 << 6,
+};
+
+enum cursor_movement {
+	CURSOR_SAVE,
+	CURSOR_LOAD
+};
+
+enum cursor_state {
+	CURSOR_DEFAULT  = 0,
+	CURSOR_WRAPNEXT = 1,
+	CURSOR_ORIGIN   = 2
+};
+
+enum charset {
+	CS_GRAPHIC0,
+	CS_GRAPHIC1,
+	CS_UK,
+	CS_USA,
+	CS_MULTI,
+	CS_GER,
+	CS_FIN
+};
+
+enum escape_state {
+	ESC_START      = 1,
+	ESC_CSI        = 2,
+	ESC_STR        = 4,  /* DCS, OSC, PM, APC */
+	ESC_ALTCHARSET = 8,
+	ESC_STR_END    = 16, /* a final string was encountered */
+	ESC_TEST       = 32, /* Enter in test mode */
+	ESC_UTF8       = 64,
+};
+
+typedef struct {
+	Glyph attr; /* current char attributes */
+	int x;
+	int y;
+	char state;
+} TCursor;
+
+typedef struct {
+	int mode;
+	int type;
+	int snap;
+	/*
+	 * Selection variables:
+	 * nb – normalized coordinates of the beginning of the selection
+	 * ne – normalized coordinates of the end of the selection
+	 * ob – original coordinates of the beginning of the selection
+	 * oe – original coordinates of the end of the selection
+	 */
+	struct {
+		int x, y;
+	} nb, ne, ob, oe;
+
+	int alt;
+} Selection;
+
+/* Internal representation of the screen */
+typedef struct {
+	int row;      /* nb row */
+	int col;      /* nb col */
+	Line *line;   /* screen */
+	Line *alt;    /* alternate screen */
+	int *dirty;   /* dirtyness of lines */
+	TCursor c;    /* cursor */
+	int ocx;      /* old cursor col */
+	int ocy;      /* old cursor row */
+	int top;      /* top    scroll limit */
+	int bot;      /* bottom scroll limit */
+	int mode;     /* terminal mode flags */
+	int esc;      /* escape state flags */
+	char trantbl[4]; /* charset table translation */
+	int charset;  /* current charset */
+	int icharset; /* selected charset for sequence */
+	int *tabs;
+	Rune lastc;   /* last printed char outside of sequence, 0 if control */
+} Term;
+
+/* CSI Escape sequence structs */
+/* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
+typedef struct {
+	char buf[ESC_BUF_SIZ]; /* raw string */
+	size_t len;            /* raw string length */
+	char priv;
+	int arg[ESC_ARG_SIZ];
+	int narg;              /* nb of args */
+	char mode[2];
+} CSIEscape;
+
+/* STR Escape sequence structs */
+/* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
+typedef struct {
+	char type;             /* ESC type ... */
+	char *buf;             /* allocated raw string */
+	size_t siz;            /* allocation size */
+	size_t len;            /* raw string length */
+	char *args[STR_ARG_SIZ];
+	int narg;              /* nb of args */
+} STREscape;
+
+static void execsh(char *, char **);
+static void stty(char **);
+static void sigchld(int);
+static void ttywriteraw(const char *, size_t);
+
+static void csidump(void);
+static void csihandle(void);
+static void csiparse(void);
+static void csireset(void);
+static int eschandle(uchar);
+static void strdump(void);
+static void strhandle(void);
+static void strparse(void);
+static void strreset(void);
+
+static void tprinter(char *, size_t);
+static void tdumpsel(void);
+static void tdumpline(int);
+static void tdump(void);
+static void tclearregion(int, int, int, int);
+static void tcursor(int);
+static void tdeletechar(int);
+static void tdeleteline(int);
+static void tinsertblank(int);
+static void tinsertblankline(int);
+static int tlinelen(int);
+static void tmoveto(int, int);
+static void tmoveato(int, int);
+static void tnewline(int);
+static void tputtab(int);
+static void tputc(Rune);
+static void treset(void);
+static void tscrollup(int, int);
+static void tscrolldown(int, int);
+static void tsetattr(const int *, int);
+static void tsetchar(Rune, const Glyph *, int, int);
+static void tsetdirt(int, int);
+static void tsetscroll(int, int);
+static void tswapscreen(void);
+static void tsetmode(int, int, const int *, int);
+static int twrite(const char *, int, int);
+static void tfulldirt(void);
+static void tcontrolcode(uchar );
+static void tdectest(char );
+static void tdefutf8(char);
+static int32_t tdefcolor(const int *, int *, int);
+static void tdeftran(char);
+static void tstrsequence(uchar);
+
+static void drawregion(int, int, int, int);
+
+static void selnormalize(void);
+static void selscroll(int, int);
+static void selsnap(int *, int *, int);
+
+static size_t utf8decode(const char *, Rune *, size_t);
+static Rune utf8decodebyte(char, size_t *);
+static char utf8encodebyte(Rune, size_t);
+static size_t utf8validate(Rune *, size_t);
+
+static char *base64dec(const char *);
+static char base64dec_getc(const char **);
+
+static ssize_t xwrite(int, const char *, size_t);
+
+/* Globals */
+static Term term;
+static Selection sel;
+static CSIEscape csiescseq;
+static STREscape strescseq;
+static int iofd = 1;
+static int cmdfd;
+static pid_t pid;
+
+static const uchar utfbyte[UTF_SIZ + 1] = {0x80,    0, 0xC0, 0xE0, 0xF0};
+static const uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
+static const Rune utfmin[UTF_SIZ + 1] = {       0,    0,  0x80,  0x800,  0x10000};
+static const Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
+
+ssize_t
+xwrite(int fd, const char *s, size_t len)
+{
+	size_t aux = len;
+	ssize_t r;
+
+	while (len > 0) {
+		r = write(fd, s, len);
+		if (r < 0)
+			return r;
+		len -= r;
+		s += r;
+	}
+
+	return aux;
+}
+
+void *
+xmalloc(size_t len)
+{
+	void *p;
+
+	if (!(p = malloc(len)))
+		die("malloc: %s\n", strerror(errno));
+
+	return p;
+}
+
+void *
+xrealloc(void *p, size_t len)
+{
+	if ((p = realloc(p, len)) == NULL)
+		die("realloc: %s\n", strerror(errno));
+
+	return p;
+}
+
+char *
+xstrdup(const char *s)
+{
+	char *p;
+
+	if ((p = strdup(s)) == NULL)
+		die("strdup: %s\n", strerror(errno));
+
+	return p;
+}
+
+size_t
+utf8decode(const char *c, Rune *u, size_t clen)
+{
+	size_t i, j, len, type;
+	Rune udecoded;
+
+	*u = UTF_INVALID;
+	if (!clen)
+		return 0;
+	udecoded = utf8decodebyte(c[0], &len);
+	if (!BETWEEN(len, 1, UTF_SIZ))
+		return 1;
+	for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
+		udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
+		if (type != 0)
+			return j;
+	}
+	if (j < len)
+		return 0;
+	*u = udecoded;
+	utf8validate(u, len);
+
+	return len;
+}
+
+Rune
+utf8decodebyte(char c, size_t *i)
+{
+	for (*i = 0; *i < LEN(utfmask); ++(*i))
+		if (((uchar)c & utfmask[*i]) == utfbyte[*i])
+			return (uchar)c & ~utfmask[*i];
+
+	return 0;
+}
+
+size_t
+utf8encode(Rune u, char *c)
+{
+	size_t len, i;
+
+	len = utf8validate(&u, 0);
+	if (len > UTF_SIZ)
+		return 0;
+
+	for (i = len - 1; i != 0; --i) {
+		c[i] = utf8encodebyte(u, 0);
+		u >>= 6;
+	}
+	c[0] = utf8encodebyte(u, len);
+
+	return len;
+}
+
+char
+utf8encodebyte(Rune u, size_t i)
+{
+	return utfbyte[i] | (u & ~utfmask[i]);
+}
+
+size_t
+utf8validate(Rune *u, size_t i)
+{
+	if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
+		*u = UTF_INVALID;
+	for (i = 1; *u > utfmax[i]; ++i)
+		;
+
+	return i;
+}
+
+static const char base64_digits[] = {
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 0, 0,
+	63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, 0, -1, 0, 0, 0, 0, 1,
+	2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
+	22, 23, 24, 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34,
+	35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+char
+base64dec_getc(const char **src)
+{
+	while (**src && !isprint(**src))
+		(*src)++;
+	return **src ? *((*src)++) : '=';  /* emulate padding if string ends */
+}
+
+char *
+base64dec(const char *src)
+{
+	size_t in_len = strlen(src);
+	char *result, *dst;
+
+	if (in_len % 4)
+		in_len += 4 - (in_len % 4);
+	result = dst = xmalloc(in_len / 4 * 3 + 1);
+	while (*src) {
+		int a = base64_digits[(unsigned char) base64dec_getc(&src)];
+		int b = base64_digits[(unsigned char) base64dec_getc(&src)];
+		int c = base64_digits[(unsigned char) base64dec_getc(&src)];
+		int d = base64_digits[(unsigned char) base64dec_getc(&src)];
+
+		/* invalid input. 'a' can be -1, e.g. if src is "\n" (c-str) */
+		if (a == -1 || b == -1)
+			break;
+
+		*dst++ = (a << 2) | ((b & 0x30) >> 4);
+		if (c == -1)
+			break;
+		*dst++ = ((b & 0x0f) << 4) | ((c & 0x3c) >> 2);
+		if (d == -1)
+			break;
+		*dst++ = ((c & 0x03) << 6) | d;
+	}
+	*dst = '\0';
+	return result;
+}
+
+void
+selinit(void)
+{
+	sel.mode = SEL_IDLE;
+	sel.snap = 0;
+	sel.ob.x = -1;
+}
+
+int
+tlinelen(int y)
+{
+	int i = term.col;
+
+	if (term.line[y][i - 1].mode & ATTR_WRAP)
+		return i;
+
+	while (i > 0 && term.line[y][i - 1].u == ' ')
+		--i;
+
+	return i;
+}
+
+void
+selstart(int col, int row, int snap)
+{
+	selclear();
+	sel.mode = SEL_EMPTY;
+	sel.type = SEL_REGULAR;
+	sel.alt = IS_SET(MODE_ALTSCREEN);
+	sel.snap = snap;
+	sel.oe.x = sel.ob.x = col;
+	sel.oe.y = sel.ob.y = row;
+	selnormalize();
+
+	if (sel.snap != 0)
+		sel.mode = SEL_READY;
+	tsetdirt(sel.nb.y, sel.ne.y);
+}
+
+void
+selextend(int col, int row, int type, int done)
+{
+	int oldey, oldex, oldsby, oldsey, oldtype;
+
+	if (sel.mode == SEL_IDLE)
+		return;
+	if (done && sel.mode == SEL_EMPTY) {
+		selclear();
+		return;
+	}
+
+	oldey = sel.oe.y;
+	oldex = sel.oe.x;
+	oldsby = sel.nb.y;
+	oldsey = sel.ne.y;
+	oldtype = sel.type;
+
+	sel.oe.x = col;
+	sel.oe.y = row;
+	selnormalize();
+	sel.type = type;
+
+	if (oldey != sel.oe.y || oldex != sel.oe.x || oldtype != sel.type || sel.mode == SEL_EMPTY)
+		tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
+
+	sel.mode = done ? SEL_IDLE : SEL_READY;
+}
+
+void
+selnormalize(void)
+{
+	int i;
+
+	if (sel.type == SEL_REGULAR && sel.ob.y != sel.oe.y) {
+		sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
+		sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
+	} else {
+		sel.nb.x = MIN(sel.ob.x, sel.oe.x);
+		sel.ne.x = MAX(sel.ob.x, sel.oe.x);
+	}
+	sel.nb.y = MIN(sel.ob.y, sel.oe.y);
+	sel.ne.y = MAX(sel.ob.y, sel.oe.y);
+
+	selsnap(&sel.nb.x, &sel.nb.y, -1);
+	selsnap(&sel.ne.x, &sel.ne.y, +1);
+
+	/* expand selection over line breaks */
+	if (sel.type == SEL_RECTANGULAR)
+		return;
+	i = tlinelen(sel.nb.y);
+	if (i < sel.nb.x)
+		sel.nb.x = i;
+	if (tlinelen(sel.ne.y) <= sel.ne.x)
+		sel.ne.x = term.col - 1;
+}
+
+int
+selected(int x, int y)
+{
+	if (sel.mode == SEL_EMPTY || sel.ob.x == -1 ||
+			sel.alt != IS_SET(MODE_ALTSCREEN))
+		return 0;
+
+	if (sel.type == SEL_RECTANGULAR)
+		return BETWEEN(y, sel.nb.y, sel.ne.y)
+		    && BETWEEN(x, sel.nb.x, sel.ne.x);
+
+	return BETWEEN(y, sel.nb.y, sel.ne.y)
+	    && (y != sel.nb.y || x >= sel.nb.x)
+	    && (y != sel.ne.y || x <= sel.ne.x);
+}
+
+void
+selsnap(int *x, int *y, int direction)
+{
+	int newx, newy, xt, yt;
+	int delim, prevdelim;
+	const Glyph *gp, *prevgp;
+
+	switch (sel.snap) {
+	case SNAP_WORD:
+		/*
+		 * Snap around if the word wraps around at the end or
+		 * beginning of a line.
+		 */
+		prevgp = &term.line[*y][*x];
+		prevdelim = ISDELIM(prevgp->u);
+		for (;;) {
+			newx = *x + direction;
+			newy = *y;
+			if (!BETWEEN(newx, 0, term.col - 1)) {
+				newy += direction;
+				newx = (newx + term.col) % term.col;
+				if (!BETWEEN(newy, 0, term.row - 1))
+					break;
+
+				if (direction > 0)
+					yt = *y, xt = *x;
+				else
+					yt = newy, xt = newx;
+				if (!(term.line[yt][xt].mode & ATTR_WRAP))
+					break;
+			}
+
+			if (newx >= tlinelen(newy))
+				break;
+
+			gp = &term.line[newy][newx];
+			delim = ISDELIM(gp->u);
+			if (!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
+					|| (delim && gp->u != prevgp->u)))
+				break;
+
+			*x = newx;
+			*y = newy;
+			prevgp = gp;
+			prevdelim = delim;
+		}
+		break;
+	case SNAP_LINE:
+		/*
+		 * Snap around if the the previous line or the current one
+		 * has set ATTR_WRAP at its end. Then the whole next or
+		 * previous line will be selected.
+		 */
+		*x = (direction < 0) ? 0 : term.col - 1;
+		if (direction < 0) {
+			for (; *y > 0; *y += direction) {
+				if (!(term.line[*y-1][term.col-1].mode
+						& ATTR_WRAP)) {
+					break;
+				}
+			}
+		} else if (direction > 0) {
+			for (; *y < term.row-1; *y += direction) {
+				if (!(term.line[*y][term.col-1].mode
+						& ATTR_WRAP)) {
+					break;
+				}
+			}
+		}
+		break;
+	}
+}
+
+char *
+getsel(void)
+{
+	char *str, *ptr;
+	int y, bufsize, lastx, linelen;
+	const Glyph *gp, *last;
+
+	if (sel.ob.x == -1)
+		return NULL;
+
+	bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
+	ptr = str = xmalloc(bufsize);
+
+	/* append every set & selected glyph to the selection */
+	for (y = sel.nb.y; y <= sel.ne.y; y++) {
+		if ((linelen = tlinelen(y)) == 0) {
+			*ptr++ = '\n';
+			continue;
+		}
+
+		if (sel.type == SEL_RECTANGULAR) {
+			gp = &term.line[y][sel.nb.x];
+			lastx = sel.ne.x;
+		} else {
+			gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
+			lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
+		}
+		last = &term.line[y][MIN(lastx, linelen-1)];
+		while (last >= gp && last->u == ' ')
+			--last;
+
+		for ( ; gp <= last; ++gp) {
+			if (gp->mode & ATTR_WDUMMY)
+				continue;
+
+			ptr += utf8encode(gp->u, ptr);
+		}
+
+		/*
+		 * Copy and pasting of line endings is inconsistent
+		 * in the inconsistent terminal and GUI world.
+		 * The best solution seems like to produce '\n' when
+		 * something is copied from st and convert '\n' to
+		 * '\r', when something to be pasted is received by
+		 * st.
+		 * FIXME: Fix the computer world.
+		 */
+		if ((y < sel.ne.y || lastx >= linelen) &&
+		    (!(last->mode & ATTR_WRAP) || sel.type == SEL_RECTANGULAR))
+			*ptr++ = '\n';
+	}
+	*ptr = 0;
+	return str;
+}
+
+void
+selclear(void)
+{
+	if (sel.ob.x == -1)
+		return;
+	sel.mode = SEL_IDLE;
+	sel.ob.x = -1;
+	tsetdirt(sel.nb.y, sel.ne.y);
+}
+
+void
+die(const char *errstr, ...)
+{
+	va_list ap;
+
+	va_start(ap, errstr);
+	vfprintf(stderr, errstr, ap);
+	va_end(ap);
+	exit(1);
+}
+
+void
+execsh(char *cmd, char **args)
+{
+	char *sh, *prog, *arg;
+	const struct passwd *pw;
+
+	errno = 0;
+	if ((pw = getpwuid(getuid())) == NULL) {
+		if (errno)
+			die("getpwuid: %s\n", strerror(errno));
+		else
+			die("who are you?\n");
+	}
+
+	if ((sh = getenv("SHELL")) == NULL)
+		sh = (pw->pw_shell[0]) ? pw->pw_shell : cmd;
+
+	if (args) {
+		prog = args[0];
+		arg = NULL;
+	} else if (scroll) {
+		prog = scroll;
+		arg = utmp ? utmp : sh;
+	} else if (utmp) {
+		prog = utmp;
+		arg = NULL;
+	} else {
+		prog = sh;
+		arg = NULL;
+	}
+	DEFAULT(args, ((char *[]) {prog, arg, NULL}));
+
+	unsetenv("COLUMNS");
+	unsetenv("LINES");
+	unsetenv("TERMCAP");
+	setenv("LOGNAME", pw->pw_name, 1);
+	setenv("USER", pw->pw_name, 1);
+	setenv("SHELL", sh, 1);
+	setenv("HOME", pw->pw_dir, 1);
+	setenv("TERM", termname, 1);
+
+	signal(SIGCHLD, SIG_DFL);
+	signal(SIGHUP, SIG_DFL);
+	signal(SIGINT, SIG_DFL);
+	signal(SIGQUIT, SIG_DFL);
+	signal(SIGTERM, SIG_DFL);
+	signal(SIGALRM, SIG_DFL);
+
+	execvp(prog, args);
+	_exit(1);
+}
+
+void
+sigchld(int a)
+{
+	int stat;
+	pid_t p;
+
+	if ((p = waitpid(pid, &stat, WNOHANG)) < 0)
+		die("waiting for pid %hd failed: %s\n", pid, strerror(errno));
+
+	if (pid != p)
+		return;
+
+	if (WIFEXITED(stat) && WEXITSTATUS(stat))
+		die("child exited with status %d\n", WEXITSTATUS(stat));
+	else if (WIFSIGNALED(stat))
+		die("child terminated due to signal %d\n", WTERMSIG(stat));
+	_exit(0);
+}
+
+void
+stty(char **args)
+{
+	char cmd[_POSIX_ARG_MAX], **p, *q, *s;
+	size_t n, siz;
+
+	if ((n = strlen(stty_args)) > sizeof(cmd)-1)
+		die("incorrect stty parameters\n");
+	memcpy(cmd, stty_args, n);
+	q = cmd + n;
+	siz = sizeof(cmd) - n;
+	for (p = args; p && (s = *p); ++p) {
+		if ((n = strlen(s)) > siz-1)
+			die("stty parameter length too long\n");
+		*q++ = ' ';
+		memcpy(q, s, n);
+		q += n;
+		siz -= n + 1;
+	}
+	*q = '\0';
+	if (system(cmd) != 0)
+		perror("Couldn't call stty");
+}
+
+int
+ttynew(const char *line, char *cmd, const char *out, char **args)
+{
+	int m, s;
+
+	if (out) {
+		term.mode |= MODE_PRINT;
+		iofd = (!strcmp(out, "-")) ?
+			  1 : open(out, O_WRONLY | O_CREAT, 0666);
+		if (iofd < 0) {
+			fprintf(stderr, "Error opening %s:%s\n",
+				out, strerror(errno));
+		}
+	}
+
+	if (line) {
+		if ((cmdfd = open(line, O_RDWR)) < 0)
+			die("open line '%s' failed: %s\n",
+			    line, strerror(errno));
+		dup2(cmdfd, 0);
+		stty(args);
+		return cmdfd;
+	}
+
+	/* seems to work fine on linux, openbsd and freebsd */
+	if (openpty(&m, &s, NULL, NULL, NULL) < 0)
+		die("openpty failed: %s\n", strerror(errno));
+
+	switch (pid = fork()) {
+	case -1:
+		die("fork failed: %s\n", strerror(errno));
+		break;
+	case 0:
+		close(iofd);
+		close(m);
+		setsid(); /* create a new process group */
+		dup2(s, 0);
+		dup2(s, 1);
+		dup2(s, 2);
+		if (ioctl(s, TIOCSCTTY, NULL) < 0)
+			die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
+		if (s > 2)
+			close(s);
+#ifdef __OpenBSD__
+		if (pledge("stdio getpw proc exec", NULL) == -1)
+			die("pledge\n");
+#endif
+		execsh(cmd, args);
+		break;
+	default:
+#ifdef __OpenBSD__
+		if (pledge("stdio rpath tty proc", NULL) == -1)
+			die("pledge\n");
+#endif
+		close(s);
+		cmdfd = m;
+		signal(SIGCHLD, sigchld);
+		break;
+	}
+	return cmdfd;
+}
+
+size_t
+ttyread(void)
+{
+	static char buf[BUFSIZ];
+	static int buflen = 0;
+	int ret, written;
+
+	/* append read bytes to unprocessed bytes */
+	ret = read(cmdfd, buf+buflen, LEN(buf)-buflen);
+
+	switch (ret) {
+	case 0:
+		exit(0);
+	case -1:
+		die("couldn't read from shell: %s\n", strerror(errno));
+	default:
+		buflen += ret;
+		written = twrite(buf, buflen, 0);
+		buflen -= written;
+		/* keep any incomplete UTF-8 byte sequence for the next call */
+		if (buflen > 0)
+			memmove(buf, buf + written, buflen);
+		return ret;
+	}
+}
+
+void
+ttywrite(const char *s, size_t n, int may_echo)
+{
+	const char *next;
+
+	if (may_echo && IS_SET(MODE_ECHO))
+		twrite(s, n, 1);
+
+	if (!IS_SET(MODE_CRLF)) {
+		ttywriteraw(s, n);
+		return;
+	}
+
+	/* This is similar to how the kernel handles ONLCR for ttys */
+	while (n > 0) {
+		if (*s == '\r') {
+			next = s + 1;
+			ttywriteraw("\r\n", 2);
+		} else {
+			next = memchr(s, '\r', n);
+			DEFAULT(next, s + n);
+			ttywriteraw(s, next - s);
+		}
+		n -= next - s;
+		s = next;
+	}
+}
+
+void
+ttywriteraw(const char *s, size_t n)
+{
+	fd_set wfd, rfd;
+	ssize_t r;
+	size_t lim = 256;
+
+	/*
+	 * Remember that we are using a pty, which might be a modem line.
+	 * Writing too much will clog the line. That's why we are doing this
+	 * dance.
+	 * FIXME: Migrate the world to Plan 9.
+	 */
+	while (n > 0) {
+		FD_ZERO(&wfd);
+		FD_ZERO(&rfd);
+		FD_SET(cmdfd, &wfd);
+		FD_SET(cmdfd, &rfd);
+
+		/* Check if we can write. */
+		if (pselect(cmdfd+1, &rfd, &wfd, NULL, NULL, NULL) < 0) {
+			if (errno == EINTR)
+				continue;
+			die("select failed: %s\n", strerror(errno));
+		}
+		if (FD_ISSET(cmdfd, &wfd)) {
+			/*
+			 * Only write the bytes written by ttywrite() or the
+			 * default of 256. This seems to be a reasonable value
+			 * for a serial line. Bigger values might clog the I/O.
+			 */
+			if ((r = write(cmdfd, s, (n < lim)? n : lim)) < 0)
+				goto write_error;
+			if (r < n) {
+				/*
+				 * We weren't able to write out everything.
+				 * This means the buffer is getting full
+				 * again. Empty it.
+				 */
+				if (n < lim)
+					lim = ttyread();
+				n -= r;
+				s += r;
+			} else {
+				/* All bytes have been written. */
+				break;
+			}
+		}
+		if (FD_ISSET(cmdfd, &rfd))
+			lim = ttyread();
+	}
+	return;
+
+write_error:
+	die("write error on tty: %s\n", strerror(errno));
+}
+
+void
+ttyresize(int tw, int th)
+{
+	struct winsize w;
+
+	w.ws_row = term.row;
+	w.ws_col = term.col;
+	w.ws_xpixel = tw;
+	w.ws_ypixel = th;
+	if (ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
+		fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
+}
+
+void
+ttyhangup()
+{
+	/* Send SIGHUP to shell */
+	kill(pid, SIGHUP);
+}
+
+int
+tattrset(int attr)
+{
+	int i, j;
+
+	for (i = 0; i < term.row-1; i++) {
+		for (j = 0; j < term.col-1; j++) {
+			if (term.line[i][j].mode & attr)
+				return 1;
+		}
+	}
+
+	return 0;
+}
+
+void
+tsetdirt(int top, int bot)
+{
+	int i;
+
+	LIMIT(top, 0, term.row-1);
+	LIMIT(bot, 0, term.row-1);
+
+	for (i = top; i <= bot; i++)
+		term.dirty[i] = 1;
+}
+
+void
+tsetdirtattr(int attr)
+{
+	int i, j;
+
+	for (i = 0; i < term.row-1; i++) {
+		for (j = 0; j < term.col-1; j++) {
+			if (term.line[i][j].mode & attr) {
+				tsetdirt(i, i);
+				break;
+			}
+		}
+	}
+}
+
+void
+tfulldirt(void)
+{
+	tsetdirt(0, term.row-1);
+}
+
+void
+tcursor(int mode)
+{
+	static TCursor c[2];
+	int alt = IS_SET(MODE_ALTSCREEN);
+
+	if (mode == CURSOR_SAVE) {
+		c[alt] = term.c;
+	} else if (mode == CURSOR_LOAD) {
+		term.c = c[alt];
+		tmoveto(c[alt].x, c[alt].y);
+	}
+}
+
+void
+treset(void)
+{
+	uint i;
+
+	term.c = (TCursor){{
+		.mode = ATTR_NULL,
+		.fg = defaultfg,
+		.bg = defaultbg
+	}, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
+
+	memset(term.tabs, 0, term.col * sizeof(*term.tabs));
+	for (i = tabspaces; i < term.col; i += tabspaces)
+		term.tabs[i] = 1;
+	term.top = 0;
+	term.bot = term.row - 1;
+	term.mode = MODE_WRAP|MODE_UTF8;
+	memset(term.trantbl, CS_USA, sizeof(term.trantbl));
+	term.charset = 0;
+
+	for (i = 0; i < 2; i++) {
+		tmoveto(0, 0);
+		tcursor(CURSOR_SAVE);
+		tclearregion(0, 0, term.col-1, term.row-1);
+		tswapscreen();
+	}
+}
+
+void
+tnew(int col, int row)
+{
+	term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
+	tresize(col, row);
+	treset();
+}
+
+void
+tswapscreen(void)
+{
+	Line *tmp = term.line;
+
+	term.line = term.alt;
+	term.alt = tmp;
+	term.mode ^= MODE_ALTSCREEN;
+	tfulldirt();
+}
+
+void
+tscrolldown(int orig, int n)
+{
+	int i;
+	Line temp;
+
+	LIMIT(n, 0, term.bot-orig+1);
+
+	tsetdirt(orig, term.bot-n);
+	tclearregion(0, term.bot-n+1, term.col-1, term.bot);
+
+	for (i = term.bot; i >= orig+n; i--) {
+		temp = term.line[i];
+		term.line[i] = term.line[i-n];
+		term.line[i-n] = temp;
+	}
+
+	selscroll(orig, n);
+}
+
+void
+tscrollup(int orig, int n)
+{
+	int i;
+	Line temp;
+
+	LIMIT(n, 0, term.bot-orig+1);
+
+	tclearregion(0, orig, term.col-1, orig+n-1);
+	tsetdirt(orig+n, term.bot);
+
+	for (i = orig; i <= term.bot-n; i++) {
+		temp = term.line[i];
+		term.line[i] = term.line[i+n];
+		term.line[i+n] = temp;
+	}
+
+	selscroll(orig, -n);
+}
+
+void
+selscroll(int orig, int n)
+{
+	if (sel.ob.x == -1)
+		return;
+
+	if (BETWEEN(sel.nb.y, orig, term.bot) != BETWEEN(sel.ne.y, orig, term.bot)) {
+		selclear();
+	} else if (BETWEEN(sel.nb.y, orig, term.bot)) {
+		sel.ob.y += n;
+		sel.oe.y += n;
+		if (sel.ob.y < term.top || sel.ob.y > term.bot ||
+		    sel.oe.y < term.top || sel.oe.y > term.bot) {
+			selclear();
+		} else {
+			selnormalize();
+		}
+	}
+}
+
+void
+tnewline(int first_col)
+{
+	int y = term.c.y;
+
+	if (y == term.bot) {
+		tscrollup(term.top, 1);
+	} else {
+		y++;
+	}
+	tmoveto(first_col ? 0 : term.c.x, y);
+}
+
+void
+csiparse(void)
+{
+	char *p = csiescseq.buf, *np;
+	long int v;
+
+	csiescseq.narg = 0;
+	if (*p == '?') {
+		csiescseq.priv = 1;
+		p++;
+	}
+
+	csiescseq.buf[csiescseq.len] = '\0';
+	while (p < csiescseq.buf+csiescseq.len) {
+		np = NULL;
+		v = strtol(p, &np, 10);
+		if (np == p)
+			v = 0;
+		if (v == LONG_MAX || v == LONG_MIN)
+			v = -1;
+		csiescseq.arg[csiescseq.narg++] = v;
+		p = np;
+		if (*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
+			break;
+		p++;
+	}
+	csiescseq.mode[0] = *p++;
+	csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
+}
+
+/* for absolute user moves, when decom is set */
+void
+tmoveato(int x, int y)
+{
+	tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
+}
+
+void
+tmoveto(int x, int y)
+{
+	int miny, maxy;
+
+	if (term.c.state & CURSOR_ORIGIN) {
+		miny = term.top;
+		maxy = term.bot;
+	} else {
+		miny = 0;
+		maxy = term.row - 1;
+	}
+	term.c.state &= ~CURSOR_WRAPNEXT;
+	term.c.x = LIMIT(x, 0, term.col-1);
+	term.c.y = LIMIT(y, miny, maxy);
+}
+
+void
+tsetchar(Rune u, const Glyph *attr, int x, int y)
+{
+	static const char *vt100_0[62] = { /* 0x41 - 0x7e */
+		"↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
+		0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
+		0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
+		0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
+		"◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
+		"␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
+		"⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
+		"│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
+	};
+
+	/*
+	 * The table is proudly stolen from rxvt.
+	 */
+	if (term.trantbl[term.charset] == CS_GRAPHIC0 &&
+	   BETWEEN(u, 0x41, 0x7e) && vt100_0[u - 0x41])
+		utf8decode(vt100_0[u - 0x41], &u, UTF_SIZ);
+
+	if (term.line[y][x].mode & ATTR_WIDE) {
+		if (x+1 < term.col) {
+			term.line[y][x+1].u = ' ';
+			term.line[y][x+1].mode &= ~ATTR_WDUMMY;
+		}
+	} else if (term.line[y][x].mode & ATTR_WDUMMY) {
+		term.line[y][x-1].u = ' ';
+		term.line[y][x-1].mode &= ~ATTR_WIDE;
+	}
+
+	term.dirty[y] = 1;
+	term.line[y][x] = *attr;
+	term.line[y][x].u = u;
+}
+
+void
+tclearregion(int x1, int y1, int x2, int y2)
+{
+	int x, y, temp;
+	Glyph *gp;
+
+	if (x1 > x2)
+		temp = x1, x1 = x2, x2 = temp;
+	if (y1 > y2)
+		temp = y1, y1 = y2, y2 = temp;
+
+	LIMIT(x1, 0, term.col-1);
+	LIMIT(x2, 0, term.col-1);
+	LIMIT(y1, 0, term.row-1);
+	LIMIT(y2, 0, term.row-1);
+
+	for (y = y1; y <= y2; y++) {
+		term.dirty[y] = 1;
+		for (x = x1; x <= x2; x++) {
+			gp = &term.line[y][x];
+			if (selected(x, y))
+				selclear();
+			gp->fg = term.c.attr.fg;
+			gp->bg = term.c.attr.bg;
+			gp->mode = 0;
+			gp->u = ' ';
+		}
+	}
+}
+
+void
+tdeletechar(int n)
+{
+	int dst, src, size;
+	Glyph *line;
+
+	LIMIT(n, 0, term.col - term.c.x);
+
+	dst = term.c.x;
+	src = term.c.x + n;
+	size = term.col - src;
+	line = term.line[term.c.y];
+
+	memmove(&line[dst], &line[src], size * sizeof(Glyph));
+	tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
+}
+
+void
+tinsertblank(int n)
+{
+	int dst, src, size;
+	Glyph *line;
+
+	LIMIT(n, 0, term.col - term.c.x);
+
+	dst = term.c.x + n;
+	src = term.c.x;
+	size = term.col - dst;
+	line = term.line[term.c.y];
+
+	memmove(&line[dst], &line[src], size * sizeof(Glyph));
+	tclearregion(src, term.c.y, dst - 1, term.c.y);
+}
+
+void
+tinsertblankline(int n)
+{
+	if (BETWEEN(term.c.y, term.top, term.bot))
+		tscrolldown(term.c.y, n);
+}
+
+void
+tdeleteline(int n)
+{
+	if (BETWEEN(term.c.y, term.top, term.bot))
+		tscrollup(term.c.y, n);
+}
+
+int32_t
+tdefcolor(const int *attr, int *npar, int l)
+{
+	int32_t idx = -1;
+	uint r, g, b;
+
+	switch (attr[*npar + 1]) {
+	case 2: /* direct color in RGB space */
+		if (*npar + 4 >= l) {
+			fprintf(stderr,
+				"erresc(38): Incorrect number of parameters (%d)\n",
+				*npar);
+			break;
+		}
+		r = attr[*npar + 2];
+		g = attr[*npar + 3];
+		b = attr[*npar + 4];
+		*npar += 4;
+		if (!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
+			fprintf(stderr, "erresc: bad rgb color (%u,%u,%u)\n",
+				r, g, b);
+		else
+			idx = TRUECOLOR(r, g, b);
+		break;
+	case 5: /* indexed color */
+		if (*npar + 2 >= l) {
+			fprintf(stderr,
+				"erresc(38): Incorrect number of parameters (%d)\n",
+				*npar);
+			break;
+		}
+		*npar += 2;
+		if (!BETWEEN(attr[*npar], 0, 255))
+			fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
+		else
+			idx = attr[*npar];
+		break;
+	case 0: /* implemented defined (only foreground) */
+	case 1: /* transparent */
+	case 3: /* direct color in CMY space */
+	case 4: /* direct color in CMYK space */
+	default:
+		fprintf(stderr,
+		        "erresc(38): gfx attr %d unknown\n", attr[*npar]);
+		break;
+	}
+
+	return idx;
+}
+
+void
+tsetattr(const int *attr, int l)
+{
+	int i;
+	int32_t idx;
+
+	for (i = 0; i < l; i++) {
+		switch (attr[i]) {
+		case 0:
+			term.c.attr.mode &= ~(
+				ATTR_BOLD       |
+				ATTR_FAINT      |
+				ATTR_ITALIC     |
+				ATTR_UNDERLINE  |
+				ATTR_BLINK      |
+				ATTR_REVERSE    |
+				ATTR_INVISIBLE  |
+				ATTR_STRUCK     );
+			term.c.attr.fg = defaultfg;
+			term.c.attr.bg = defaultbg;
+			break;
+		case 1:
+			term.c.attr.mode |= ATTR_BOLD;
+			break;
+		case 2:
+			term.c.attr.mode |= ATTR_FAINT;
+			break;
+		case 3:
+			term.c.attr.mode |= ATTR_ITALIC;
+			break;
+		case 4:
+			term.c.attr.mode |= ATTR_UNDERLINE;
+			break;
+		case 5: /* slow blink */
+			/* FALLTHROUGH */
+		case 6: /* rapid blink */
+			term.c.attr.mode |= ATTR_BLINK;
+			break;
+		case 7:
+			term.c.attr.mode |= ATTR_REVERSE;
+			break;
+		case 8:
+			term.c.attr.mode |= ATTR_INVISIBLE;
+			break;
+		case 9:
+			term.c.attr.mode |= ATTR_STRUCK;
+			break;
+		case 22:
+			term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
+			break;
+		case 23:
+			term.c.attr.mode &= ~ATTR_ITALIC;
+			break;
+		case 24:
+			term.c.attr.mode &= ~ATTR_UNDERLINE;
+			break;
+		case 25:
+			term.c.attr.mode &= ~ATTR_BLINK;
+			break;
+		case 27:
+			term.c.attr.mode &= ~ATTR_REVERSE;
+			break;
+		case 28:
+			term.c.attr.mode &= ~ATTR_INVISIBLE;
+			break;
+		case 29:
+			term.c.attr.mode &= ~ATTR_STRUCK;
+			break;
+		case 38:
+			if ((idx = tdefcolor(attr, &i, l)) >= 0)
+				term.c.attr.fg = idx;
+			break;
+		case 39:
+			term.c.attr.fg = defaultfg;
+			break;
+		case 48:
+			if ((idx = tdefcolor(attr, &i, l)) >= 0)
+				term.c.attr.bg = idx;
+			break;
+		case 49:
+			term.c.attr.bg = defaultbg;
+			break;
+		default:
+			if (BETWEEN(attr[i], 30, 37)) {
+				term.c.attr.fg = attr[i] - 30;
+			} else if (BETWEEN(attr[i], 40, 47)) {
+				term.c.attr.bg = attr[i] - 40;
+			} else if (BETWEEN(attr[i], 90, 97)) {
+				term.c.attr.fg = attr[i] - 90 + 8;
+			} else if (BETWEEN(attr[i], 100, 107)) {
+				term.c.attr.bg = attr[i] - 100 + 8;
+			} else {
+				fprintf(stderr,
+					"erresc(default): gfx attr %d unknown\n",
+					attr[i]);
+				csidump();
+			}
+			break;
+		}
+	}
+}
+
+void
+tsetscroll(int t, int b)
+{
+	int temp;
+
+	LIMIT(t, 0, term.row-1);
+	LIMIT(b, 0, term.row-1);
+	if (t > b) {
+		temp = t;
+		t = b;
+		b = temp;
+	}
+	term.top = t;
+	term.bot = b;
+}
+
+void
+tsetmode(int priv, int set, const int *args, int narg)
+{
+	int alt; const int *lim;
+
+	for (lim = args + narg; args < lim; ++args) {
+		if (priv) {
+			switch (*args) {
+			case 1: /* DECCKM -- Cursor key */
+				xsetmode(set, MODE_APPCURSOR);
+				break;
+			case 5: /* DECSCNM -- Reverse video */
+				xsetmode(set, MODE_REVERSE);
+				break;
+			case 6: /* DECOM -- Origin */
+				MODBIT(term.c.state, set, CURSOR_ORIGIN);
+				tmoveato(0, 0);
+				break;
+			case 7: /* DECAWM -- Auto wrap */
+				MODBIT(term.mode, set, MODE_WRAP);
+				break;
+			case 0:  /* Error (IGNORED) */
+			case 2:  /* DECANM -- ANSI/VT52 (IGNORED) */
+			case 3:  /* DECCOLM -- Column  (IGNORED) */
+			case 4:  /* DECSCLM -- Scroll (IGNORED) */
+			case 8:  /* DECARM -- Auto repeat (IGNORED) */
+			case 18: /* DECPFF -- Printer feed (IGNORED) */
+			case 19: /* DECPEX -- Printer extent (IGNORED) */
+			case 42: /* DECNRCM -- National characters (IGNORED) */
+			case 12: /* att610 -- Start blinking cursor (IGNORED) */
+				break;
+			case 25: /* DECTCEM -- Text Cursor Enable Mode */
+				xsetmode(!set, MODE_HIDE);
+				break;
+			case 9:    /* X10 mouse compatibility mode */
+				xsetpointermotion(0);
+				xsetmode(0, MODE_MOUSE);
+				xsetmode(set, MODE_MOUSEX10);
+				break;
+			case 1000: /* 1000: report button press */
+				xsetpointermotion(0);
+				xsetmode(0, MODE_MOUSE);
+				xsetmode(set, MODE_MOUSEBTN);
+				break;
+			case 1002: /* 1002: report motion on button press */
+				xsetpointermotion(0);
+				xsetmode(0, MODE_MOUSE);
+				xsetmode(set, MODE_MOUSEMOTION);
+				break;
+			case 1003: /* 1003: enable all mouse motions */
+				xsetpointermotion(set);
+				xsetmode(0, MODE_MOUSE);
+				xsetmode(set, MODE_MOUSEMANY);
+				break;
+			case 1004: /* 1004: send focus events to tty */
+				xsetmode(set, MODE_FOCUS);
+				break;
+			case 1006: /* 1006: extended reporting mode */
+				xsetmode(set, MODE_MOUSESGR);
+				break;
+			case 1034:
+				xsetmode(set, MODE_8BIT);
+				break;
+			case 1049: /* swap screen & set/restore cursor as xterm */
+				if (!allowaltscreen)
+					break;
+				tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
+				/* FALLTHROUGH */
+			case 47: /* swap screen */
+			case 1047:
+				if (!allowaltscreen)
+					break;
+				alt = IS_SET(MODE_ALTSCREEN);
+				if (alt) {
+					tclearregion(0, 0, term.col-1,
+							term.row-1);
+				}
+				if (set ^ alt) /* set is always 1 or 0 */
+					tswapscreen();
+				if (*args != 1049)
+					break;
+				/* FALLTHROUGH */
+			case 1048:
+				tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
+				break;
+			case 2004: /* 2004: bracketed paste mode */
+				xsetmode(set, MODE_BRCKTPASTE);
+				break;
+			/* Not implemented mouse modes. See comments there. */
+			case 1001: /* mouse highlight mode; can hang the
+				      terminal by design when implemented. */
+			case 1005: /* UTF-8 mouse mode; will confuse
+				      applications not supporting UTF-8
+				      and luit. */
+			case 1015: /* urxvt mangled mouse mode; incompatible
+				      and can be mistaken for other control
+				      codes. */
+				break;
+			default:
+				fprintf(stderr,
+					"erresc: unknown private set/reset mode %d\n",
+					*args);
+				break;
+			}
+		} else {
+			switch (*args) {
+			case 0:  /* Error (IGNORED) */
+				break;
+			case 2:
+				xsetmode(set, MODE_KBDLOCK);
+				break;
+			case 4:  /* IRM -- Insertion-replacement */
+				MODBIT(term.mode, set, MODE_INSERT);
+				break;
+			case 12: /* SRM -- Send/Receive */
+				MODBIT(term.mode, !set, MODE_ECHO);
+				break;
+			case 20: /* LNM -- Linefeed/new line */
+				MODBIT(term.mode, set, MODE_CRLF);
+				break;
+			default:
+				fprintf(stderr,
+					"erresc: unknown set/reset mode %d\n",
+					*args);
+				break;
+			}
+		}
+	}
+}
+
+void
+csihandle(void)
+{
+	char buf[40];
+	int len;
+
+	switch (csiescseq.mode[0]) {
+	default:
+	unknown:
+		fprintf(stderr, "erresc: unknown csi ");
+		csidump();
+		/* die(""); */
+		break;
+	case '@': /* ICH -- Insert <n> blank char */
+		DEFAULT(csiescseq.arg[0], 1);
+		tinsertblank(csiescseq.arg[0]);
+		break;
+	case 'A': /* CUU -- Cursor <n> Up */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
+		break;
+	case 'B': /* CUD -- Cursor <n> Down */
+	case 'e': /* VPR --Cursor <n> Down */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
+		break;
+	case 'i': /* MC -- Media Copy */
+		switch (csiescseq.arg[0]) {
+		case 0:
+			tdump();
+			break;
+		case 1:
+			tdumpline(term.c.y);
+			break;
+		case 2:
+			tdumpsel();
+			break;
+		case 4:
+			term.mode &= ~MODE_PRINT;
+			break;
+		case 5:
+			term.mode |= MODE_PRINT;
+			break;
+		}
+		break;
+	case 'c': /* DA -- Device Attributes */
+		if (csiescseq.arg[0] == 0)
+			ttywrite(vtiden, strlen(vtiden), 0);
+		break;
+	case 'b': /* REP -- if last char is printable print it <n> more times */
+		DEFAULT(csiescseq.arg[0], 1);
+		if (term.lastc)
+			while (csiescseq.arg[0]-- > 0)
+				tputc(term.lastc);
+		break;
+	case 'C': /* CUF -- Cursor <n> Forward */
+	case 'a': /* HPR -- Cursor <n> Forward */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
+		break;
+	case 'D': /* CUB -- Cursor <n> Backward */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
+		break;
+	case 'E': /* CNL -- Cursor <n> Down and first col */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(0, term.c.y+csiescseq.arg[0]);
+		break;
+	case 'F': /* CPL -- Cursor <n> Up and first col */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(0, term.c.y-csiescseq.arg[0]);
+		break;
+	case 'g': /* TBC -- Tabulation clear */
+		switch (csiescseq.arg[0]) {
+		case 0: /* clear current tab stop */
+			term.tabs[term.c.x] = 0;
+			break;
+		case 3: /* clear all the tabs */
+			memset(term.tabs, 0, term.col * sizeof(*term.tabs));
+			break;
+		default:
+			goto unknown;
+		}
+		break;
+	case 'G': /* CHA -- Move to <col> */
+	case '`': /* HPA */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveto(csiescseq.arg[0]-1, term.c.y);
+		break;
+	case 'H': /* CUP -- Move to <row> <col> */
+	case 'f': /* HVP */
+		DEFAULT(csiescseq.arg[0], 1);
+		DEFAULT(csiescseq.arg[1], 1);
+		tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
+		break;
+	case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
+		DEFAULT(csiescseq.arg[0], 1);
+		tputtab(csiescseq.arg[0]);
+		break;
+	case 'J': /* ED -- Clear screen */
+		switch (csiescseq.arg[0]) {
+		case 0: /* below */
+			tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
+			if (term.c.y < term.row-1) {
+				tclearregion(0, term.c.y+1, term.col-1,
+						term.row-1);
+			}
+			break;
+		case 1: /* above */
+			if (term.c.y > 1)
+				tclearregion(0, 0, term.col-1, term.c.y-1);
+			tclearregion(0, term.c.y, term.c.x, term.c.y);
+			break;
+		case 2: /* all */
+			tclearregion(0, 0, term.col-1, term.row-1);
+			break;
+		default:
+			goto unknown;
+		}
+		break;
+	case 'K': /* EL -- Clear line */
+		switch (csiescseq.arg[0]) {
+		case 0: /* right */
+			tclearregion(term.c.x, term.c.y, term.col-1,
+					term.c.y);
+			break;
+		case 1: /* left */
+			tclearregion(0, term.c.y, term.c.x, term.c.y);
+			break;
+		case 2: /* all */
+			tclearregion(0, term.c.y, term.col-1, term.c.y);
+			break;
+		}
+		break;
+	case 'S': /* SU -- Scroll <n> line up */
+		DEFAULT(csiescseq.arg[0], 1);
+		tscrollup(term.top, csiescseq.arg[0]);
+		break;
+	case 'T': /* SD -- Scroll <n> line down */
+		DEFAULT(csiescseq.arg[0], 1);
+		tscrolldown(term.top, csiescseq.arg[0]);
+		break;
+	case 'L': /* IL -- Insert <n> blank lines */
+		DEFAULT(csiescseq.arg[0], 1);
+		tinsertblankline(csiescseq.arg[0]);
+		break;
+	case 'l': /* RM -- Reset Mode */
+		tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
+		break;
+	case 'M': /* DL -- Delete <n> lines */
+		DEFAULT(csiescseq.arg[0], 1);
+		tdeleteline(csiescseq.arg[0]);
+		break;
+	case 'X': /* ECH -- Erase <n> char */
+		DEFAULT(csiescseq.arg[0], 1);
+		tclearregion(term.c.x, term.c.y,
+				term.c.x + csiescseq.arg[0] - 1, term.c.y);
+		break;
+	case 'P': /* DCH -- Delete <n> char */
+		DEFAULT(csiescseq.arg[0], 1);
+		tdeletechar(csiescseq.arg[0]);
+		break;
+	case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
+		DEFAULT(csiescseq.arg[0], 1);
+		tputtab(-csiescseq.arg[0]);
+		break;
+	case 'd': /* VPA -- Move to <row> */
+		DEFAULT(csiescseq.arg[0], 1);
+		tmoveato(term.c.x, csiescseq.arg[0]-1);
+		break;
+	case 'h': /* SM -- Set terminal mode */
+		tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
+		break;
+	case 'm': /* SGR -- Terminal attribute (color) */
+		tsetattr(csiescseq.arg, csiescseq.narg);
+		break;
+	case 'n': /* DSR – Device Status Report (cursor position) */
+		if (csiescseq.arg[0] == 6) {
+			len = snprintf(buf, sizeof(buf), "\033[%i;%iR",
+					term.c.y+1, term.c.x+1);
+			ttywrite(buf, len, 0);
+		}
+		break;
+	case 'r': /* DECSTBM -- Set Scrolling Region */
+		if (csiescseq.priv) {
+			goto unknown;
+		} else {
+			DEFAULT(csiescseq.arg[0], 1);
+			DEFAULT(csiescseq.arg[1], term.row);
+			tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
+			tmoveato(0, 0);
+		}
+		break;
+	case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
+		tcursor(CURSOR_SAVE);
+		break;
+	case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
+		tcursor(CURSOR_LOAD);
+		break;
+	case ' ':
+		switch (csiescseq.mode[1]) {
+		case 'q': /* DECSCUSR -- Set Cursor Style */
+			if (xsetcursor(csiescseq.arg[0]))
+				goto unknown;
+			break;
+		default:
+			goto unknown;
+		}
+		break;
+	}
+}
+
+void
+csidump(void)
+{
+	size_t i;
+	uint c;
+
+	fprintf(stderr, "ESC[");
+	for (i = 0; i < csiescseq.len; i++) {
+		c = csiescseq.buf[i] & 0xff;
+		if (isprint(c)) {
+			putc(c, stderr);
+		} else if (c == '\n') {
+			fprintf(stderr, "(\\n)");
+		} else if (c == '\r') {
+			fprintf(stderr, "(\\r)");
+		} else if (c == 0x1b) {
+			fprintf(stderr, "(\\e)");
+		} else {
+			fprintf(stderr, "(%02x)", c);
+		}
+	}
+	putc('\n', stderr);
+}
+
+void
+csireset(void)
+{
+	memset(&csiescseq, 0, sizeof(csiescseq));
+}
+
+void
+osc4_color_response(int num)
+{
+	int n;
+	char buf[32];
+	unsigned char r, g, b;
+
+	if (xgetcolor(num, &r, &g, &b)) {
+		fprintf(stderr, "erresc: failed to fetch osc4 color %d\n", num);
+		return;
+	}
+
+	n = snprintf(buf, sizeof buf, "\033]4;%d;rgb:%02x%02x/%02x%02x/%02x%02x\007",
+		     num, r, r, g, g, b, b);
+
+	ttywrite(buf, n, 1);
+}
+
+void
+osc_color_response(int index, int num)
+{
+	int n;
+	char buf[32];
+	unsigned char r, g, b;
+
+	if (xgetcolor(index, &r, &g, &b)) {
+		fprintf(stderr, "erresc: failed to fetch osc color %d\n", index);
+		return;
+	}
+
+	n = snprintf(buf, sizeof buf, "\033]%d;rgb:%02x%02x/%02x%02x/%02x%02x\007",
+		     num, r, r, g, g, b, b);
+
+	ttywrite(buf, n, 1);
+}
+
+void
+strhandle(void)
+{
+	char *p = NULL, *dec;
+	int j, narg, par;
+
+	term.esc &= ~(ESC_STR_END|ESC_STR);
+	strparse();
+	par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
+
+	switch (strescseq.type) {
+	case ']': /* OSC -- Operating System Command */
+		switch (par) {
+		case 0:
+			if (narg > 1) {
+				xsettitle(strescseq.args[1]);
+				xseticontitle(strescseq.args[1]);
+			}
+			return;
+		case 1:
+			if (narg > 1)
+				xseticontitle(strescseq.args[1]);
+			return;
+		case 2:
+			if (narg > 1)
+				xsettitle(strescseq.args[1]);
+			return;
+		case 52:
+			if (narg > 2 && allowwindowops) {
+				dec = base64dec(strescseq.args[2]);
+				if (dec) {
+					xsetsel(dec);
+					xclipcopy();
+				} else {
+					fprintf(stderr, "erresc: invalid base64\n");
+				}
+			}
+			return;
+		case 10:
+			if (narg < 2)
+				break;
+
+			p = strescseq.args[1];
+
+			if (!strcmp(p, "?"))
+				osc_color_response(defaultfg, 10);
+			else if (xsetcolorname(defaultfg, p))
+				fprintf(stderr, "erresc: invalid foreground color: %s\n", p);
+			else
+				redraw();
+			return;
+		case 11:
+			if (narg < 2)
+				break;
+
+			p = strescseq.args[1];
+
+			if (!strcmp(p, "?"))
+				osc_color_response(defaultbg, 11);
+			else if (xsetcolorname(defaultbg, p))
+				fprintf(stderr, "erresc: invalid background color: %s\n", p);
+			else
+				redraw();
+			return;
+		case 12:
+			if (narg < 2)
+				break;
+
+			p = strescseq.args[1];
+
+			if (!strcmp(p, "?"))
+				osc_color_response(defaultcs, 12);
+			else if (xsetcolorname(defaultcs, p))
+				fprintf(stderr, "erresc: invalid cursor color: %s\n", p);
+			else
+				redraw();
+			return;
+		case 4: /* color set */
+			if (narg < 3)
+				break;
+			p = strescseq.args[2];
+			/* FALLTHROUGH */
+		case 104: /* color reset */
+			j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
+
+			if (p && !strcmp(p, "?"))
+				osc4_color_response(j);
+			else if (xsetcolorname(j, p)) {
+				if (par == 104 && narg <= 1)
+					return; /* color reset without parameter */
+				fprintf(stderr, "erresc: invalid color j=%d, p=%s\n",
+				        j, p ? p : "(null)");
+			} else {
+				/*
+				 * TODO if defaultbg color is changed, borders
+				 * are dirty
+				 */
+				redraw();
+			}
+			return;
+		}
+		break;
+	case 'k': /* old title set compatibility */
+		xsettitle(strescseq.args[0]);
+		return;
+	case 'P': /* DCS -- Device Control String */
+	case '_': /* APC -- Application Program Command */
+	case '^': /* PM -- Privacy Message */
+		return;
+	}
+
+	fprintf(stderr, "erresc: unknown str ");
+	strdump();
+}
+
+void
+strparse(void)
+{
+	int c;
+	char *p = strescseq.buf;
+
+	strescseq.narg = 0;
+	strescseq.buf[strescseq.len] = '\0';
+
+	if (*p == '\0')
+		return;
+
+	while (strescseq.narg < STR_ARG_SIZ) {
+		strescseq.args[strescseq.narg++] = p;
+		while ((c = *p) != ';' && c != '\0')
+			++p;
+		if (c == '\0')
+			return;
+		*p++ = '\0';
+	}
+}
+
+void
+strdump(void)
+{
+	size_t i;
+	uint c;
+
+	fprintf(stderr, "ESC%c", strescseq.type);
+	for (i = 0; i < strescseq.len; i++) {
+		c = strescseq.buf[i] & 0xff;
+		if (c == '\0') {
+			putc('\n', stderr);
+			return;
+		} else if (isprint(c)) {
+			putc(c, stderr);
+		} else if (c == '\n') {
+			fprintf(stderr, "(\\n)");
+		} else if (c == '\r') {
+			fprintf(stderr, "(\\r)");
+		} else if (c == 0x1b) {
+			fprintf(stderr, "(\\e)");
+		} else {
+			fprintf(stderr, "(%02x)", c);
+		}
+	}
+	fprintf(stderr, "ESC\\\n");
+}
+
+void
+strreset(void)
+{
+	strescseq = (STREscape){
+		.buf = xrealloc(strescseq.buf, STR_BUF_SIZ),
+		.siz = STR_BUF_SIZ,
+	};
+}
+
+void
+sendbreak(const Arg *arg)
+{
+	if (tcsendbreak(cmdfd, 0))
+		perror("Error sending break");
+}
+
+void
+tprinter(char *s, size_t len)
+{
+	if (iofd != -1 && xwrite(iofd, s, len) < 0) {
+		perror("Error writing to output file");
+		close(iofd);
+		iofd = -1;
+	}
+}
+
+void
+toggleprinter(const Arg *arg)
+{
+	term.mode ^= MODE_PRINT;
+}
+
+void
+printscreen(const Arg *arg)
+{
+	tdump();
+}
+
+void
+printsel(const Arg *arg)
+{
+	tdumpsel();
+}
+
+void
+tdumpsel(void)
+{
+	char *ptr;
+
+	if ((ptr = getsel())) {
+		tprinter(ptr, strlen(ptr));
+		free(ptr);
+	}
+}
+
+void
+tdumpline(int n)
+{
+	char buf[UTF_SIZ];
+	const Glyph *bp, *end;
+
+	bp = &term.line[n][0];
+	end = &bp[MIN(tlinelen(n), term.col) - 1];
+	if (bp != end || bp->u != ' ') {
+		for ( ; bp <= end; ++bp)
+			tprinter(buf, utf8encode(bp->u, buf));
+	}
+	tprinter("\n", 1);
+}
+
+void
+tdump(void)
+{
+	int i;
+
+	for (i = 0; i < term.row; ++i)
+		tdumpline(i);
+}
+
+void
+tputtab(int n)
+{
+	uint x = term.c.x;
+
+	if (n > 0) {
+		while (x < term.col && n--)
+			for (++x; x < term.col && !term.tabs[x]; ++x)
+				/* nothing */ ;
+	} else if (n < 0) {
+		while (x > 0 && n++)
+			for (--x; x > 0 && !term.tabs[x]; --x)
+				/* nothing */ ;
+	}
+	term.c.x = LIMIT(x, 0, term.col-1);
+}
+
+void
+tdefutf8(char ascii)
+{
+	if (ascii == 'G')
+		term.mode |= MODE_UTF8;
+	else if (ascii == '@')
+		term.mode &= ~MODE_UTF8;
+}
+
+void
+tdeftran(char ascii)
+{
+	static char cs[] = "0B";
+	static int vcs[] = {CS_GRAPHIC0, CS_USA};
+	char *p;
+
+	if ((p = strchr(cs, ascii)) == NULL) {
+		fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
+	} else {
+		term.trantbl[term.icharset] = vcs[p - cs];
+	}
+}
+
+void
+tdectest(char c)
+{
+	int x, y;
+
+	if (c == '8') { /* DEC screen alignment test. */
+		for (x = 0; x < term.col; ++x) {
+			for (y = 0; y < term.row; ++y)
+				tsetchar('E', &term.c.attr, x, y);
+		}
+	}
+}
+
+void
+tstrsequence(uchar c)
+{
+	switch (c) {
+	case 0x90:   /* DCS -- Device Control String */
+		c = 'P';
+		break;
+	case 0x9f:   /* APC -- Application Program Command */
+		c = '_';
+		break;
+	case 0x9e:   /* PM -- Privacy Message */
+		c = '^';
+		break;
+	case 0x9d:   /* OSC -- Operating System Command */
+		c = ']';
+		break;
+	}
+	strreset();
+	strescseq.type = c;
+	term.esc |= ESC_STR;
+}
+
+void
+tcontrolcode(uchar ascii)
+{
+	switch (ascii) {
+	case '\t':   /* HT */
+		tputtab(1);
+		return;
+	case '\b':   /* BS */
+		tmoveto(term.c.x-1, term.c.y);
+		return;
+	case '\r':   /* CR */
+		tmoveto(0, term.c.y);
+		return;
+	case '\f':   /* LF */
+	case '\v':   /* VT */
+	case '\n':   /* LF */
+		/* go to first col if the mode is set */
+		tnewline(IS_SET(MODE_CRLF));
+		return;
+	case '\a':   /* BEL */
+		if (term.esc & ESC_STR_END) {
+			/* backwards compatibility to xterm */
+			strhandle();
+		} else {
+			xbell();
+		}
+		break;
+	case '\033': /* ESC */
+		csireset();
+		term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
+		term.esc |= ESC_START;
+		return;
+	case '\016': /* SO (LS1 -- Locking shift 1) */
+	case '\017': /* SI (LS0 -- Locking shift 0) */
+		term.charset = 1 - (ascii - '\016');
+		return;
+	case '\032': /* SUB */
+		tsetchar('?', &term.c.attr, term.c.x, term.c.y);
+		/* FALLTHROUGH */
+	case '\030': /* CAN */
+		csireset();
+		break;
+	case '\005': /* ENQ (IGNORED) */
+	case '\000': /* NUL (IGNORED) */
+	case '\021': /* XON (IGNORED) */
+	case '\023': /* XOFF (IGNORED) */
+	case 0177:   /* DEL (IGNORED) */
+		return;
+	case 0x80:   /* TODO: PAD */
+	case 0x81:   /* TODO: HOP */
+	case 0x82:   /* TODO: BPH */
+	case 0x83:   /* TODO: NBH */
+	case 0x84:   /* TODO: IND */
+		break;
+	case 0x85:   /* NEL -- Next line */
+		tnewline(1); /* always go to first col */
+		break;
+	case 0x86:   /* TODO: SSA */
+	case 0x87:   /* TODO: ESA */
+		break;
+	case 0x88:   /* HTS -- Horizontal tab stop */
+		term.tabs[term.c.x] = 1;
+		break;
+	case 0x89:   /* TODO: HTJ */
+	case 0x8a:   /* TODO: VTS */
+	case 0x8b:   /* TODO: PLD */
+	case 0x8c:   /* TODO: PLU */
+	case 0x8d:   /* TODO: RI */
+	case 0x8e:   /* TODO: SS2 */
+	case 0x8f:   /* TODO: SS3 */
+	case 0x91:   /* TODO: PU1 */
+	case 0x92:   /* TODO: PU2 */
+	case 0x93:   /* TODO: STS */
+	case 0x94:   /* TODO: CCH */
+	case 0x95:   /* TODO: MW */
+	case 0x96:   /* TODO: SPA */
+	case 0x97:   /* TODO: EPA */
+	case 0x98:   /* TODO: SOS */
+	case 0x99:   /* TODO: SGCI */
+		break;
+	case 0x9a:   /* DECID -- Identify Terminal */
+		ttywrite(vtiden, strlen(vtiden), 0);
+		break;
+	case 0x9b:   /* TODO: CSI */
+	case 0x9c:   /* TODO: ST */
+		break;
+	case 0x90:   /* DCS -- Device Control String */
+	case 0x9d:   /* OSC -- Operating System Command */
+	case 0x9e:   /* PM -- Privacy Message */
+	case 0x9f:   /* APC -- Application Program Command */
+		tstrsequence(ascii);
+		return;
+	}
+	/* only CAN, SUB, \a and C1 chars interrupt a sequence */
+	term.esc &= ~(ESC_STR_END|ESC_STR);
+}
+
+/*
+ * returns 1 when the sequence is finished and it hasn't to read
+ * more characters for this sequence, otherwise 0
+ */
+int
+eschandle(uchar ascii)
+{
+	switch (ascii) {
+	case '[':
+		term.esc |= ESC_CSI;
+		return 0;
+	case '#':
+		term.esc |= ESC_TEST;
+		return 0;
+	case '%':
+		term.esc |= ESC_UTF8;
+		return 0;
+	case 'P': /* DCS -- Device Control String */
+	case '_': /* APC -- Application Program Command */
+	case '^': /* PM -- Privacy Message */
+	case ']': /* OSC -- Operating System Command */
+	case 'k': /* old title set compatibility */
+		tstrsequence(ascii);
+		return 0;
+	case 'n': /* LS2 -- Locking shift 2 */
+	case 'o': /* LS3 -- Locking shift 3 */
+		term.charset = 2 + (ascii - 'n');
+		break;
+	case '(': /* GZD4 -- set primary charset G0 */
+	case ')': /* G1D4 -- set secondary charset G1 */
+	case '*': /* G2D4 -- set tertiary charset G2 */
+	case '+': /* G3D4 -- set quaternary charset G3 */
+		term.icharset = ascii - '(';
+		term.esc |= ESC_ALTCHARSET;
+		return 0;
+	case 'D': /* IND -- Linefeed */
+		if (term.c.y == term.bot) {
+			tscrollup(term.top, 1);
+		} else {
+			tmoveto(term.c.x, term.c.y+1);
+		}
+		break;
+	case 'E': /* NEL -- Next line */
+		tnewline(1); /* always go to first col */
+		break;
+	case 'H': /* HTS -- Horizontal tab stop */
+		term.tabs[term.c.x] = 1;
+		break;
+	case 'M': /* RI -- Reverse index */
+		if (term.c.y == term.top) {
+			tscrolldown(term.top, 1);
+		} else {
+			tmoveto(term.c.x, term.c.y-1);
+		}
+		break;
+	case 'Z': /* DECID -- Identify Terminal */
+		ttywrite(vtiden, strlen(vtiden), 0);
+		break;
+	case 'c': /* RIS -- Reset to initial state */
+		treset();
+		resettitle();
+		xloadcols();
+		break;
+	case '=': /* DECPAM -- Application keypad */
+		xsetmode(1, MODE_APPKEYPAD);
+		break;
+	case '>': /* DECPNM -- Normal keypad */
+		xsetmode(0, MODE_APPKEYPAD);
+		break;
+	case '7': /* DECSC -- Save Cursor */
+		tcursor(CURSOR_SAVE);
+		break;
+	case '8': /* DECRC -- Restore Cursor */
+		tcursor(CURSOR_LOAD);
+		break;
+	case '\\': /* ST -- String Terminator */
+		if (term.esc & ESC_STR_END)
+			strhandle();
+		break;
+	default:
+		fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
+			(uchar) ascii, isprint(ascii)? ascii:'.');
+		break;
+	}
+	return 1;
+}
+
+void
+tputc(Rune u)
+{
+	char c[UTF_SIZ];
+	int control;
+	int width, len;
+	Glyph *gp;
+
+	control = ISCONTROL(u);
+	if (u < 127 || !IS_SET(MODE_UTF8)) {
+		c[0] = u;
+		width = len = 1;
+	} else {
+		len = utf8encode(u, c);
+		if (!control && (width = wcwidth(u)) == -1)
+			width = 1;
+	}
+
+	if (IS_SET(MODE_PRINT))
+		tprinter(c, len);
+
+	/*
+	 * STR sequence must be checked before anything else
+	 * because it uses all following characters until it
+	 * receives a ESC, a SUB, a ST or any other C1 control
+	 * character.
+	 */
+	if (term.esc & ESC_STR) {
+		if (u == '\a' || u == 030 || u == 032 || u == 033 ||
+		   ISCONTROLC1(u)) {
+			term.esc &= ~(ESC_START|ESC_STR);
+			term.esc |= ESC_STR_END;
+			goto check_control_code;
+		}
+
+		if (strescseq.len+len >= strescseq.siz) {
+			/*
+			 * Here is a bug in terminals. If the user never sends
+			 * some code to stop the str or esc command, then st
+			 * will stop responding. But this is better than
+			 * silently failing with unknown characters. At least
+			 * then users will report back.
+			 *
+			 * In the case users ever get fixed, here is the code:
+			 */
+			/*
+			 * term.esc = 0;
+			 * strhandle();
+			 */
+			if (strescseq.siz > (SIZE_MAX - UTF_SIZ) / 2)
+				return;
+			strescseq.siz *= 2;
+			strescseq.buf = xrealloc(strescseq.buf, strescseq.siz);
+		}
+
+		memmove(&strescseq.buf[strescseq.len], c, len);
+		strescseq.len += len;
+		return;
+	}
+
+check_control_code:
+	/*
+	 * Actions of control codes must be performed as soon they arrive
+	 * because they can be embedded inside a control sequence, and
+	 * they must not cause conflicts with sequences.
+	 */
+	if (control) {
+		tcontrolcode(u);
+		/*
+		 * control codes are not shown ever
+		 */
+		if (!term.esc)
+			term.lastc = 0;
+		return;
+	} else if (term.esc & ESC_START) {
+		if (term.esc & ESC_CSI) {
+			csiescseq.buf[csiescseq.len++] = u;
+			if (BETWEEN(u, 0x40, 0x7E)
+					|| csiescseq.len >= \
+					sizeof(csiescseq.buf)-1) {
+				term.esc = 0;
+				csiparse();
+				csihandle();
+			}
+			return;
+		} else if (term.esc & ESC_UTF8) {
+			tdefutf8(u);
+		} else if (term.esc & ESC_ALTCHARSET) {
+			tdeftran(u);
+		} else if (term.esc & ESC_TEST) {
+			tdectest(u);
+		} else {
+			if (!eschandle(u))
+				return;
+			/* sequence already finished */
+		}
+		term.esc = 0;
+		/*
+		 * All characters which form part of a sequence are not
+		 * printed
+		 */
+		return;
+	}
+	if (selected(term.c.x, term.c.y))
+		selclear();
+
+	gp = &term.line[term.c.y][term.c.x];
+	if (IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
+		gp->mode |= ATTR_WRAP;
+		tnewline(1);
+		gp = &term.line[term.c.y][term.c.x];
+	}
+
+	if (IS_SET(MODE_INSERT) && term.c.x+width < term.col)
+		memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
+
+	if (term.c.x+width > term.col) {
+		tnewline(1);
+		gp = &term.line[term.c.y][term.c.x];
+	}
+
+	tsetchar(u, &term.c.attr, term.c.x, term.c.y);
+	term.lastc = u;
+
+	if (width == 2) {
+		gp->mode |= ATTR_WIDE;
+		if (term.c.x+1 < term.col) {
+			if (gp[1].mode == ATTR_WIDE && term.c.x+2 < term.col) {
+				gp[2].u = ' ';
+				gp[2].mode &= ~ATTR_WDUMMY;
+			}
+			gp[1].u = '\0';
+			gp[1].mode = ATTR_WDUMMY;
+		}
+	}
+	if (term.c.x+width < term.col) {
+		tmoveto(term.c.x+width, term.c.y);
+	} else {
+		term.c.state |= CURSOR_WRAPNEXT;
+	}
+}
+
+int
+twrite(const char *buf, int buflen, int show_ctrl)
+{
+	int charsize;
+	Rune u;
+	int n;
+
+	for (n = 0; n < buflen; n += charsize) {
+		if (IS_SET(MODE_UTF8)) {
+			/* process a complete utf8 char */
+			charsize = utf8decode(buf + n, &u, buflen - n);
+			if (charsize == 0)
+				break;
+		} else {
+			u = buf[n] & 0xFF;
+			charsize = 1;
+		}
+		if (show_ctrl && ISCONTROL(u)) {
+			if (u & 0x80) {
+				u &= 0x7f;
+				tputc('^');
+				tputc('[');
+			} else if (u != '\n' && u != '\r' && u != '\t') {
+				u ^= 0x40;
+				tputc('^');
+			}
+		}
+		tputc(u);
+	}
+	return n;
+}
+
+void
+tresize(int col, int row)
+{
+	int i;
+	int minrow = MIN(row, term.row);
+	int mincol = MIN(col, term.col);
+	int *bp;
+	TCursor c;
+
+	if (col < 1 || row < 1) {
+		fprintf(stderr,
+		        "tresize: error resizing to %dx%d\n", col, row);
+		return;
+	}
+
+	/*
+	 * slide screen to keep cursor where we expect it -
+	 * tscrollup would work here, but we can optimize to
+	 * memmove because we're freeing the earlier lines
+	 */
+	for (i = 0; i <= term.c.y - row; i++) {
+		free(term.line[i]);
+		free(term.alt[i]);
+	}
+	/* ensure that both src and dst are not NULL */
+	if (i > 0) {
+		memmove(term.line, term.line + i, row * sizeof(Line));
+		memmove(term.alt, term.alt + i, row * sizeof(Line));
+	}
+	for (i += row; i < term.row; i++) {
+		free(term.line[i]);
+		free(term.alt[i]);
+	}
+
+	/* resize to new height */
+	term.line = xrealloc(term.line, row * sizeof(Line));
+	term.alt  = xrealloc(term.alt,  row * sizeof(Line));
+	term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
+	term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
+
+	/* resize each row to new width, zero-pad if needed */
+	for (i = 0; i < minrow; i++) {
+		term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
+		term.alt[i]  = xrealloc(term.alt[i],  col * sizeof(Glyph));
+	}
+
+	/* allocate any new rows */
+	for (/* i = minrow */; i < row; i++) {
+		term.line[i] = xmalloc(col * sizeof(Glyph));
+		term.alt[i] = xmalloc(col * sizeof(Glyph));
+	}
+	if (col > term.col) {
+		bp = term.tabs + term.col;
+
+		memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
+		while (--bp > term.tabs && !*bp)
+			/* nothing */ ;
+		for (bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
+			*bp = 1;
+	}
+	/* update terminal size */
+	term.col = col;
+	term.row = row;
+	/* reset scrolling region */
+	tsetscroll(0, row-1);
+	/* make use of the LIMIT in tmoveto */
+	tmoveto(term.c.x, term.c.y);
+	/* Clearing both screens (it makes dirty all lines) */
+	c = term.c;
+	for (i = 0; i < 2; i++) {
+		if (mincol < col && 0 < minrow) {
+			tclearregion(mincol, 0, col - 1, minrow - 1);
+		}
+		if (0 < col && minrow < row) {
+			tclearregion(0, minrow, col - 1, row - 1);
+		}
+		tswapscreen();
+		tcursor(CURSOR_LOAD);
+	}
+	term.c = c;
+}
+
+void
+resettitle(void)
+{
+	xsettitle(NULL);
+}
+
+void
+drawregion(int x1, int y1, int x2, int y2)
+{
+	int y;
+
+	for (y = y1; y < y2; y++) {
+		if (!term.dirty[y])
+			continue;
+
+		term.dirty[y] = 0;
+		xdrawline(term.line[y], x1, y, x2);
+	}
+}
+
+void
+draw(void)
+{
+	int cx = term.c.x, ocx = term.ocx, ocy = term.ocy;
+
+	if (!xstartdraw())
+		return;
+
+	/* adjust cursor position */
+	LIMIT(term.ocx, 0, term.col-1);
+	LIMIT(term.ocy, 0, term.row-1);
+	if (term.line[term.ocy][term.ocx].mode & ATTR_WDUMMY)
+		term.ocx--;
+	if (term.line[term.c.y][cx].mode & ATTR_WDUMMY)
+		cx--;
+
+	drawregion(0, 0, term.col, term.row);
+	xdrawcursor(cx, term.c.y, term.line[term.c.y][cx],
+			term.ocx, term.ocy, term.line[term.ocy][term.ocx]);
+	term.ocx = cx;
+	term.ocy = term.c.y;
+	xfinishdraw();
+	if (ocx != term.ocx || ocy != term.ocy)
+		xximspot(term.ocx, term.ocy);
+}
+
+void
+redraw(void)
+{
+	tfulldirt();
+	draw();
+}
diff --git a/st.h b/st.h
new file mode 100644
index 0000000..519b9bd
--- /dev/null
+++ b/st.h
@@ -0,0 +1,128 @@
+/* See LICENSE for license details. */
+
+#include <stdint.h>
+#include <sys/types.h>
+
+/* macros */
+#define MIN(a, b)		((a) < (b) ? (a) : (b))
+#define MAX(a, b)		((a) < (b) ? (b) : (a))
+#define LEN(a)			(sizeof(a) / sizeof(a)[0])
+#define BETWEEN(x, a, b)	((a) <= (x) && (x) <= (b))
+#define DIVCEIL(n, d)		(((n) + ((d) - 1)) / (d))
+#define DEFAULT(a, b)		(a) = (a) ? (a) : (b)
+#define LIMIT(x, a, b)		(x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
+#define ATTRCMP(a, b)		((a).mode != (b).mode || (a).fg != (b).fg || \
+				(a).bg != (b).bg)
+#define TIMEDIFF(t1, t2)	((t1.tv_sec-t2.tv_sec)*1000 + \
+				(t1.tv_nsec-t2.tv_nsec)/1E6)
+#define MODBIT(x, set, bit)	((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
+
+#define TRUECOLOR(r,g,b)	(1 << 24 | (r) << 16 | (g) << 8 | (b))
+#define IS_TRUECOL(x)		(1 << 24 & (x))
+
+enum glyph_attribute {
+	ATTR_NULL       = 0,
+	ATTR_BOLD       = 1 << 0,
+	ATTR_FAINT      = 1 << 1,
+	ATTR_ITALIC     = 1 << 2,
+	ATTR_UNDERLINE  = 1 << 3,
+	ATTR_BLINK      = 1 << 4,
+	ATTR_REVERSE    = 1 << 5,
+	ATTR_INVISIBLE  = 1 << 6,
+	ATTR_STRUCK     = 1 << 7,
+	ATTR_WRAP       = 1 << 8,
+	ATTR_WIDE       = 1 << 9,
+	ATTR_WDUMMY     = 1 << 10,
+	ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
+};
+
+enum selection_mode {
+	SEL_IDLE = 0,
+	SEL_EMPTY = 1,
+	SEL_READY = 2
+};
+
+enum selection_type {
+	SEL_REGULAR = 1,
+	SEL_RECTANGULAR = 2
+};
+
+enum selection_snap {
+	SNAP_WORD = 1,
+	SNAP_LINE = 2
+};
+
+typedef unsigned char uchar;
+typedef unsigned int uint;
+typedef unsigned long ulong;
+typedef unsigned short ushort;
+
+typedef uint_least32_t Rune;
+
+#define Glyph Glyph_
+typedef struct {
+	Rune u;           /* character code */
+	ushort mode;      /* attribute flags */
+	uint32_t fg;      /* foreground  */
+	uint32_t bg;      /* background  */
+} Glyph;
+
+typedef Glyph *Line;
+
+typedef union {
+	int i;
+	uint ui;
+	float f;
+	const void *v;
+	const char *s;
+} Arg;
+
+void die(const char *, ...);
+void redraw(void);
+void draw(void);
+
+void printscreen(const Arg *);
+void printsel(const Arg *);
+void sendbreak(const Arg *);
+void toggleprinter(const Arg *);
+
+int tattrset(int);
+void tnew(int, int);
+void tresize(int, int);
+void tsetdirtattr(int);
+void ttyhangup(void);
+int ttynew(const char *, char *, const char *, char **);
+size_t ttyread(void);
+void ttyresize(int, int);
+void ttywrite(const char *, size_t, int);
+
+void resettitle(void);
+
+void selclear(void);
+void selinit(void);
+void selstart(int, int, int);
+void selextend(int, int, int, int);
+int selected(int, int);
+char *getsel(void);
+
+size_t utf8encode(Rune, char *);
+
+void *xmalloc(size_t);
+void *xrealloc(void *, size_t);
+char *xstrdup(const char *);
+
+int xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b);
+
+/* config.h globals */
+extern char *utmp;
+extern char *scroll;
+extern char *stty_args;
+extern char *vtiden;
+extern wchar_t *worddelimiters;
+extern int allowaltscreen;
+extern int allowwindowops;
+extern char *termname;
+extern unsigned int tabspaces;
+extern unsigned int defaultfg;
+extern unsigned int defaultbg;
+extern unsigned int defaultcs;
diff --git a/st.info b/st.info
new file mode 100644
index 0000000..8201ad6
--- /dev/null
+++ b/st.info
@@ -0,0 +1,239 @@
+st-mono| simpleterm monocolor,
+	acsc=+C\,D-A.B0E``aaffgghFiGjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~,
+	am,
+	bce,
+	bel=^G,
+	blink=\E[5m,
+	bold=\E[1m,
+	cbt=\E[Z,
+	cvvis=\E[?25h,
+	civis=\E[?25l,
+	clear=\E[H\E[2J,
+	cnorm=\E[?12l\E[?25h,
+	colors#2,
+	cols#80,
+	cr=^M,
+	csr=\E[%i%p1%d;%p2%dr,
+	cub=\E[%p1%dD,
+	cub1=^H,
+	cud1=^J,
+	cud=\E[%p1%dB,
+	cuf1=\E[C,
+	cuf=\E[%p1%dC,
+	cup=\E[%i%p1%d;%p2%dH,
+	cuu1=\E[A,
+	cuu=\E[%p1%dA,
+	dch=\E[%p1%dP,
+	dch1=\E[P,
+	dim=\E[2m,
+	dl=\E[%p1%dM,
+	dl1=\E[M,
+	ech=\E[%p1%dX,
+	ed=\E[J,
+	el=\E[K,
+	el1=\E[1K,
+	enacs=\E)0,
+	flash=\E[?5h$<80/>\E[?5l,
+	fsl=^G,
+	home=\E[H,
+	hpa=\E[%i%p1%dG,
+	hs,
+	ht=^I,
+	hts=\EH,
+	ich=\E[%p1%d@,
+	il1=\E[L,
+	il=\E[%p1%dL,
+	ind=^J,
+	indn=\E[%p1%dS,
+	invis=\E[8m,
+	is2=\E[4l\E>\E[?1034l,
+	it#8,
+	kel=\E[1;2F,
+	ked=\E[1;5F,
+	ka1=\E[1~,
+	ka3=\E[5~,
+	kc1=\E[4~,
+	kc3=\E[6~,
+	kbs=\177,
+	kcbt=\E[Z,
+	kb2=\EOu,
+	kcub1=\EOD,
+	kcud1=\EOB,
+	kcuf1=\EOC,
+	kcuu1=\EOA,
+	kDC=\E[3;2~,
+	kent=\EOM,
+	kEND=\E[1;2F,
+	kIC=\E[2;2~,
+	kNXT=\E[6;2~,
+	kPRV=\E[5;2~,
+	kHOM=\E[1;2H,
+	kLFT=\E[1;2D,
+	kRIT=\E[1;2C,
+	kind=\E[1;2B,
+	kri=\E[1;2A,
+	kclr=\E[3;5~,
+	kdl1=\E[3;2~,
+	kdch1=\E[3~,
+	kich1=\E[2~,
+	kend=\E[4~,
+	kf1=\EOP,
+	kf2=\EOQ,
+	kf3=\EOR,
+	kf4=\EOS,
+	kf5=\E[15~,
+	kf6=\E[17~,
+	kf7=\E[18~,
+	kf8=\E[19~,
+	kf9=\E[20~,
+	kf10=\E[21~,
+	kf11=\E[23~,
+	kf12=\E[24~,
+	kf13=\E[1;2P,
+	kf14=\E[1;2Q,
+	kf15=\E[1;2R,
+	kf16=\E[1;2S,
+	kf17=\E[15;2~,
+	kf18=\E[17;2~,
+	kf19=\E[18;2~,
+	kf20=\E[19;2~,
+	kf21=\E[20;2~,
+	kf22=\E[21;2~,
+	kf23=\E[23;2~,
+	kf24=\E[24;2~,
+	kf25=\E[1;5P,
+	kf26=\E[1;5Q,
+	kf27=\E[1;5R,
+	kf28=\E[1;5S,
+	kf29=\E[15;5~,
+	kf30=\E[17;5~,
+	kf31=\E[18;5~,
+	kf32=\E[19;5~,
+	kf33=\E[20;5~,
+	kf34=\E[21;5~,
+	kf35=\E[23;5~,
+	kf36=\E[24;5~,
+	kf37=\E[1;6P,
+	kf38=\E[1;6Q,
+	kf39=\E[1;6R,
+	kf40=\E[1;6S,
+	kf41=\E[15;6~,
+	kf42=\E[17;6~,
+	kf43=\E[18;6~,
+	kf44=\E[19;6~,
+	kf45=\E[20;6~,
+	kf46=\E[21;6~,
+	kf47=\E[23;6~,
+	kf48=\E[24;6~,
+	kf49=\E[1;3P,
+	kf50=\E[1;3Q,
+	kf51=\E[1;3R,
+	kf52=\E[1;3S,
+	kf53=\E[15;3~,
+	kf54=\E[17;3~,
+	kf55=\E[18;3~,
+	kf56=\E[19;3~,
+	kf57=\E[20;3~,
+	kf58=\E[21;3~,
+	kf59=\E[23;3~,
+	kf60=\E[24;3~,
+	kf61=\E[1;4P,
+	kf62=\E[1;4Q,
+	kf63=\E[1;4R,
+	khome=\E[1~,
+	kil1=\E[2;5~,
+	krmir=\E[2;2~,
+	knp=\E[6~,
+	kmous=\E[M,
+	kpp=\E[5~,
+	lines#24,
+	mir,
+	msgr,
+	npc,
+	op=\E[39;49m,
+	pairs#64,
+	mc0=\E[i,
+	mc4=\E[4i,
+	mc5=\E[5i,
+	rc=\E8,
+	rev=\E[7m,
+	ri=\EM,
+	rin=\E[%p1%dT,
+	ritm=\E[23m,
+	rmacs=\E(B,
+	rmcup=\E[?1049l,
+	rmir=\E[4l,
+	rmkx=\E[?1l\E>,
+	rmso=\E[27m,
+	rmul=\E[24m,
+	rs1=\Ec,
+	rs2=\E[4l\E>\E[?1034l,
+	sc=\E7,
+	sitm=\E[3m,
+	sgr0=\E[0m,
+	smacs=\E(0,
+	smcup=\E[?1049h,
+	smir=\E[4h,
+	smkx=\E[?1h\E=,
+	smso=\E[7m,
+	smul=\E[4m,
+	tbc=\E[3g,
+	tsl=\E]0;,
+	xenl,
+	vpa=\E[%i%p1%dd,
+# XTerm extensions
+	rmxx=\E[29m,
+	smxx=\E[9m,
+# disabled rep for now: causes some issues with older ncurses versions.
+#	rep=%p1%c\E[%p2%{1}%-%db,
+# tmux extensions, see TERMINFO EXTENSIONS in tmux(1)
+	Tc,
+	Ms=\E]52;%p1%s;%p2%s\007,
+	Se=\E[2 q,
+	Ss=\E[%p1%d q,
+
+st| simpleterm,
+	use=st-mono,
+	colors#8,
+	setab=\E[4%p1%dm,
+	setaf=\E[3%p1%dm,
+	setb=\E[4%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
+	setf=\E[3%?%p1%{1}%=%t4%e%p1%{3}%=%t6%e%p1%{4}%=%t1%e%p1%{6}%=%t3%e%p1%d%;m,
+	sgr=%?%p9%t\E(0%e\E(B%;\E[0%?%p6%t;1%;%?%p2%t;4%;%?%p1%p3%|%t;7%;%?%p4%t;5%;%?%p7%t;8%;m,
+
+st-256color| simpleterm with 256 colors,
+	use=st,
+	ccc,
+	colors#256,
+	oc=\E]104\007,
+	pairs#32767,
+#	Nicked from xterm-256color
+	initc=\E]4;%p1%d;rgb\:%p2%{255}%*%{1000}%/%2.2X/%p3%{255}%*%{1000}%/%2.2X/%p4%{255}%*%{1000}%/%2.2X\E\\,
+	setab=\E[%?%p1%{8}%<%t4%p1%d%e%p1%{16}%<%t10%p1%{8}%-%d%e48;5;%p1%d%;m,
+	setaf=\E[%?%p1%{8}%<%t3%p1%d%e%p1%{16}%<%t9%p1%{8}%-%d%e38;5;%p1%d%;m,
+
+st-meta| simpleterm with meta key,
+	use=st,
+	km,
+	rmm=\E[?1034l,
+	smm=\E[?1034h,
+	rs2=\E[4l\E>\E[?1034h,
+	is2=\E[4l\E>\E[?1034h,
+
+st-meta-256color| simpleterm with meta key and 256 colors,
+	use=st-256color,
+	km,
+	rmm=\E[?1034l,
+	smm=\E[?1034h,
+	rs2=\E[4l\E>\E[?1034h,
+	is2=\E[4l\E>\E[?1034h,
+
+st-bs| simpleterm with backspace as backspace,
+	use=st,
+	kbs=\010,
+	kdch1=\177,
+
+st-bs-256color| simpleterm with backspace as backspace and 256colors,
+	use=st-256color,
+	kbs=\010,
+	kdch1=\177,
diff --git a/win.h b/win.h
new file mode 100644
index 0000000..e6e4369
--- /dev/null
+++ b/win.h
@@ -0,0 +1,40 @@
+/* See LICENSE for license details. */
+
+enum win_mode {
+	MODE_VISIBLE     = 1 << 0,
+	MODE_FOCUSED     = 1 << 1,
+	MODE_APPKEYPAD   = 1 << 2,
+	MODE_MOUSEBTN    = 1 << 3,
+	MODE_MOUSEMOTION = 1 << 4,
+	MODE_REVERSE     = 1 << 5,
+	MODE_KBDLOCK     = 1 << 6,
+	MODE_HIDE        = 1 << 7,
+	MODE_APPCURSOR   = 1 << 8,
+	MODE_MOUSESGR    = 1 << 9,
+	MODE_8BIT        = 1 << 10,
+	MODE_BLINK       = 1 << 11,
+	MODE_FBLINK      = 1 << 12,
+	MODE_FOCUS       = 1 << 13,
+	MODE_MOUSEX10    = 1 << 14,
+	MODE_MOUSEMANY   = 1 << 15,
+	MODE_BRCKTPASTE  = 1 << 16,
+	MODE_NUMLOCK     = 1 << 17,
+	MODE_MOUSE       = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
+	                  |MODE_MOUSEMANY,
+};
+
+void xbell(void);
+void xclipcopy(void);
+void xdrawcursor(int, int, Glyph, int, int, Glyph);
+void xdrawline(Line, int, int, int);
+void xfinishdraw(void);
+void xloadcols(void);
+int xsetcolorname(int, const char *);
+void xseticontitle(char *);
+void xsettitle(char *);
+int xsetcursor(int);
+void xsetmode(int, unsigned int);
+void xsetpointermotion(int);
+void xsetsel(char *);
+int xstartdraw(void);
+void xximspot(int, int);
diff --git a/x.c b/x.c
new file mode 100644
index 0000000..e394882
--- /dev/null
+++ b/x.c
@@ -0,0 +1,2073 @@
+/* See LICENSE for license details. */
+#include <X11/XKBlib.h>
+#include <X11/Xatom.h>
+#include <X11/Xft/Xft.h>
+#include <X11/Xlib.h>
+#include <X11/Xresource.h>
+#include <X11/cursorfont.h>
+#include <X11/keysym.h>
+#include <errno.h>
+#include <libgen.h>
+#include <limits.h>
+#include <locale.h>
+#include <math.h>
+#include <signal.h>
+#include <sys/select.h>
+#include <time.h>
+#include <unistd.h>
+
+char *argv0;
+#include "arg.h"
+#include "st.h"
+#include "win.h"
+
+/* types used in config.h */
+typedef struct {
+  uint mod;
+  KeySym keysym;
+  void (*func)(const Arg *);
+  const Arg arg;
+} Shortcut;
+
+typedef struct {
+  uint mod;
+  uint button;
+  void (*func)(const Arg *);
+  const Arg arg;
+  uint release;
+} MouseShortcut;
+
+typedef struct {
+  KeySym k;
+  uint mask;
+  char *s;
+  /* three-valued logic variables: 0 indifferent, 1 on, -1 off */
+  signed char appkey;    /* application keypad */
+  signed char appcursor; /* application cursor */
+} Key;
+
+/* Xresources preferences */
+enum resource_type { STRING = 0, INTEGER = 1, FLOAT = 2 };
+
+typedef struct {
+  char *name;
+  enum resource_type type;
+  void *dst;
+} ResourcePref;
+
+/* X modifiers */
+#define XK_ANY_MOD UINT_MAX
+#define XK_NO_MOD 0
+#define XK_SWITCH_MOD (1 << 13 | 1 << 14)
+
+/* function definitions used in config.h */
+static void clipcopy(const Arg *);
+static void clippaste(const Arg *);
+static void numlock(const Arg *);
+static void selpaste(const Arg *);
+static void zoom(const Arg *);
+static void zoomabs(const Arg *);
+static void zoomreset(const Arg *);
+static void ttysend(const Arg *);
+
+/* config.h for applying patches and the configuration. */
+#include "config.h"
+
+/* XEMBED messages */
+#define XEMBED_FOCUS_IN 4
+#define XEMBED_FOCUS_OUT 5
+
+/* macros */
+#define IS_SET(flag) ((win.mode & (flag)) != 0)
+#define TRUERED(x) (((x)&0xff0000) >> 8)
+#define TRUEGREEN(x) (((x)&0xff00))
+#define TRUEBLUE(x) (((x)&0xff) << 8)
+
+typedef XftDraw *Draw;
+typedef XftColor Color;
+typedef XftGlyphFontSpec GlyphFontSpec;
+
+/* Purely graphic info */
+typedef struct {
+  int tw, th; /* tty width and height */
+  int w, h;   /* window width and height */
+  int ch;     /* char height */
+  int cw;     /* char width  */
+  int mode;   /* window state/mode flags */
+  int cursor; /* cursor style */
+} TermWindow;
+
+typedef struct {
+  Display *dpy;
+  Colormap cmap;
+  Window win;
+  Drawable buf;
+  GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
+  Atom xembed, wmdeletewin, netwmname, netwmiconname, netwmpid;
+  struct {
+    XIM xim;
+    XIC xic;
+    XPoint spot;
+    XVaNestedList spotlist;
+  } ime;
+  Draw draw;
+  Visual *vis;
+  XSetWindowAttributes attrs;
+  int scr;
+  int isfixed; /* is fixed geometry? */
+  int l, t;    /* left and top offset */
+  int gm;      /* geometry mask */
+} XWindow;
+
+typedef struct {
+  Atom xtarget;
+  char *primary, *clipboard;
+  struct timespec tclick1;
+  struct timespec tclick2;
+} XSelection;
+
+/* Font structure */
+#define Font Font_
+typedef struct {
+  int height;
+  int width;
+  int ascent;
+  int descent;
+  int badslant;
+  int badweight;
+  short lbearing;
+  short rbearing;
+  XftFont *match;
+  FcFontSet *set;
+  FcPattern *pattern;
+} Font;
+
+/* Drawing Context */
+typedef struct {
+  Color *col;
+  size_t collen;
+  Font font, bfont, ifont, ibfont;
+  GC gc;
+} DC;
+
+static inline ushort sixd_to_16bit(int);
+static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int,
+                               int);
+static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
+static void xdrawglyph(Glyph, int, int);
+static void xclear(int, int, int, int);
+static int xgeommasktogravity(int);
+static int ximopen(Display *);
+static void ximinstantiate(Display *, XPointer, XPointer);
+static void ximdestroy(XIM, XPointer, XPointer);
+static int xicdestroy(XIC, XPointer, XPointer);
+static void xinit(int, int);
+static void cresize(int, int);
+static void xresize(int, int);
+static void xhints(void);
+static int xloadcolor(int, const char *, Color *);
+static int xloadfont(Font *, FcPattern *);
+static void xloadfonts(const char *, double);
+static int xloadsparefont(FcPattern *, int);
+static void xloadsparefonts(void);
+static void xunloadfont(Font *);
+static void xunloadfonts(void);
+static void xsetenv(void);
+static void xseturgency(int);
+static int evcol(XEvent *);
+static int evrow(XEvent *);
+
+static void expose(XEvent *);
+static void visibility(XEvent *);
+static void unmap(XEvent *);
+static void kpress(XEvent *);
+static void cmessage(XEvent *);
+static void resize(XEvent *);
+static void focus(XEvent *);
+static uint buttonmask(uint);
+static int mouseaction(XEvent *, uint);
+static void brelease(XEvent *);
+static void bpress(XEvent *);
+static void bmotion(XEvent *);
+static void propnotify(XEvent *);
+static void selnotify(XEvent *);
+static void selclear_(XEvent *);
+static void selrequest(XEvent *);
+static void setsel(char *, Time);
+static void mousesel(XEvent *, int);
+static void mousereport(XEvent *);
+static char *kmap(KeySym, uint);
+static int match(uint, uint);
+
+static void run(void);
+static void usage(void);
+
+static void (*handler[LASTEvent])(XEvent *) = {
+    [KeyPress] = kpress,
+    [ClientMessage] = cmessage,
+    [ConfigureNotify] = resize,
+    [VisibilityNotify] = visibility,
+    [UnmapNotify] = unmap,
+    [Expose] = expose,
+    [FocusIn] = focus,
+    [FocusOut] = focus,
+    [MotionNotify] = bmotion,
+    [ButtonPress] = bpress,
+    [ButtonRelease] = brelease,
+    /*
+     * Uncomment if you want the selection to disappear when you select
+     * something different in another window.
+     */
+    /*	[SelectionClear] = selclear_, */
+    [SelectionNotify] = selnotify,
+    /*
+     * PropertyNotify is only turned on when there is some INCR transfer
+     * happening for the selection retrieval.
+     */
+    [PropertyNotify] = propnotify,
+    [SelectionRequest] = selrequest,
+};
+
+/* Globals */
+static DC dc;
+static XWindow xw;
+static XSelection xsel;
+static TermWindow win;
+
+/* Font Ring Cache */
+enum { FRC_NORMAL, FRC_ITALIC, FRC_BOLD, FRC_ITALICBOLD };
+
+typedef struct {
+  XftFont *font;
+  int flags;
+  Rune unicodep;
+} Fontcache;
+
+/* Fontcache is an array now. A new font will be appended to the array. */
+static Fontcache *frc = NULL;
+static int frclen = 0;
+static int frccap = 0;
+static char *usedfont = NULL;
+static double usedfontsize = 0;
+static double defaultfontsize = 0;
+
+static char *opt_class = NULL;
+static char **opt_cmd = NULL;
+static char *opt_embed = NULL;
+static char *opt_font = NULL;
+static char *opt_io = NULL;
+static char *opt_line = NULL;
+static char *opt_name = NULL;
+static char *opt_title = NULL;
+
+static int oldbutton = 3; /* button event on startup: 3 = release */
+static int cursorblinks = 0;
+
+void clipcopy(const Arg *dummy) {
+  Atom clipboard;
+
+  free(xsel.clipboard);
+  xsel.clipboard = NULL;
+
+  if (xsel.primary != NULL) {
+    xsel.clipboard = xstrdup(xsel.primary);
+    clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+    XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
+  }
+}
+
+void clippaste(const Arg *dummy) {
+  Atom clipboard;
+
+  clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+  XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard, xw.win,
+                    CurrentTime);
+}
+
+void selpaste(const Arg *dummy) {
+  XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY, xw.win,
+                    CurrentTime);
+}
+
+void numlock(const Arg *dummy) { win.mode ^= MODE_NUMLOCK; }
+
+void zoom(const Arg *arg) {
+  Arg larg;
+
+  larg.f = usedfontsize + arg->f;
+  zoomabs(&larg);
+}
+
+void zoomabs(const Arg *arg) {
+  xunloadfonts();
+  xloadfonts(usedfont, arg->f);
+  xloadsparefonts();
+  cresize(0, 0);
+  redraw();
+  xhints();
+}
+
+void zoomreset(const Arg *arg) {
+  Arg larg;
+
+  if (defaultfontsize > 0) {
+    larg.f = defaultfontsize;
+    zoomabs(&larg);
+  }
+}
+
+void ttysend(const Arg *arg) { ttywrite(arg->s, strlen(arg->s), 1); }
+
+int evcol(XEvent *e) {
+  int x = e->xbutton.x - borderpx;
+  LIMIT(x, 0, win.tw - 1);
+  return x / win.cw;
+}
+
+int evrow(XEvent *e) {
+  int y = e->xbutton.y - borderpx;
+  LIMIT(y, 0, win.th - 1);
+  return y / win.ch;
+}
+
+void mousesel(XEvent *e, int done) {
+  int type, seltype = SEL_REGULAR;
+  uint state = e->xbutton.state & ~(Button1Mask | forcemousemod);
+
+  for (type = 1; type < LEN(selmasks); ++type) {
+    if (match(selmasks[type], state)) {
+      seltype = type;
+      break;
+    }
+  }
+  selextend(evcol(e), evrow(e), seltype, done);
+  if (done)
+    setsel(getsel(), e->xbutton.time);
+}
+
+void mousereport(XEvent *e) {
+  int len, x = evcol(e), y = evrow(e), button = e->xbutton.button,
+           state = e->xbutton.state;
+  char buf[40];
+  static int ox, oy;
+
+  /* from urxvt */
+  if (e->xbutton.type == MotionNotify) {
+    if (x == ox && y == oy)
+      return;
+    if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
+      return;
+    /* MOUSE_MOTION: no reporting if no button is pressed */
+    if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
+      return;
+
+    button = oldbutton + 32;
+    ox = x;
+    oy = y;
+  } else {
+    if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
+      button = 3;
+    } else {
+      button -= Button1;
+      if (button >= 7)
+        button += 128 - 7;
+      else if (button >= 3)
+        button += 64 - 3;
+    }
+    if (e->xbutton.type == ButtonPress) {
+      oldbutton = button;
+      ox = x;
+      oy = y;
+    } else if (e->xbutton.type == ButtonRelease) {
+      oldbutton = 3;
+      /* MODE_MOUSEX10: no button release reporting */
+      if (IS_SET(MODE_MOUSEX10))
+        return;
+      if (button == 64 || button == 65)
+        return;
+    }
+  }
+
+  if (!IS_SET(MODE_MOUSEX10)) {
+    button += ((state & ShiftMask) ? 4 : 0) + ((state & Mod4Mask) ? 8 : 0) +
+              ((state & ControlMask) ? 16 : 0);
+  }
+
+  if (IS_SET(MODE_MOUSESGR)) {
+    len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c", button, x + 1, y + 1,
+                   e->xbutton.type == ButtonRelease ? 'm' : 'M');
+  } else if (x < 223 && y < 223) {
+    len = snprintf(buf, sizeof(buf), "\033[M%c%c%c", 32 + button, 32 + x + 1,
+                   32 + y + 1);
+  } else {
+    return;
+  }
+
+  ttywrite(buf, len, 0);
+}
+
+uint buttonmask(uint button) {
+  return button == Button1   ? Button1Mask
+         : button == Button2 ? Button2Mask
+         : button == Button3 ? Button3Mask
+         : button == Button4 ? Button4Mask
+         : button == Button5 ? Button5Mask
+                             : 0;
+}
+
+int mouseaction(XEvent *e, uint release) {
+  MouseShortcut *ms;
+
+  /* ignore Button<N>mask for Button<N> - it's set on release */
+  uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
+
+  for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
+    if (ms->release == release && ms->button == e->xbutton.button &&
+        (match(ms->mod, state) || /* exact or forced */
+         match(ms->mod, state & ~forcemousemod))) {
+      ms->func(&(ms->arg));
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+void bpress(XEvent *e) {
+  struct timespec now;
+  int snap;
+
+  if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+    mousereport(e);
+    return;
+  }
+
+  if (mouseaction(e, 0))
+    return;
+
+  if (e->xbutton.button == Button1) {
+    /*
+     * If the user clicks below predefined timeouts specific
+     * snapping behaviour is exposed.
+     */
+    clock_gettime(CLOCK_MONOTONIC, &now);
+    if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
+      snap = SNAP_LINE;
+    } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
+      snap = SNAP_WORD;
+    } else {
+      snap = 0;
+    }
+    xsel.tclick2 = xsel.tclick1;
+    xsel.tclick1 = now;
+
+    selstart(evcol(e), evrow(e), snap);
+  }
+}
+
+void propnotify(XEvent *e) {
+  XPropertyEvent *xpev;
+  Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+
+  xpev = &e->xproperty;
+  if (xpev->state == PropertyNewValue &&
+      (xpev->atom == XA_PRIMARY || xpev->atom == clipboard)) {
+    selnotify(e);
+  }
+}
+
+void selnotify(XEvent *e) {
+  ulong nitems, ofs, rem;
+  int format;
+  uchar *data, *last, *repl;
+  Atom type, incratom, property = None;
+
+  incratom = XInternAtom(xw.dpy, "INCR", 0);
+
+  ofs = 0;
+  if (e->type == SelectionNotify)
+    property = e->xselection.property;
+  else if (e->type == PropertyNotify)
+    property = e->xproperty.atom;
+
+  if (property == None)
+    return;
+
+  do {
+    if (XGetWindowProperty(xw.dpy, xw.win, property, ofs, BUFSIZ / 4, False,
+                           AnyPropertyType, &type, &format, &nitems, &rem,
+                           &data)) {
+      fprintf(stderr, "Clipboard allocation failed\n");
+      return;
+    }
+
+    if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
+      /*
+       * If there is some PropertyNotify with no data, then
+       * this is the signal of the selection owner that all
+       * data has been transferred. We won't need to receive
+       * PropertyNotify events anymore.
+       */
+      MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
+      XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
+    }
+
+    if (type == incratom) {
+      /*
+       * Activate the PropertyNotify events so we receive
+       * when the selection owner does send us the next
+       * chunk of data.
+       */
+      MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
+      XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
+
+      /*
+       * Deleting the property is the transfer start signal.
+       */
+      XDeleteProperty(xw.dpy, xw.win, (int)property);
+      continue;
+    }
+
+    /*
+     * As seen in getsel:
+     * Line endings are inconsistent in the terminal and GUI world
+     * copy and pasting. When receiving some selection data,
+     * replace all '\n' with '\r'.
+     * FIXME: Fix the computer world.
+     */
+    repl = data;
+    last = data + nitems * format / 8;
+    while ((repl = memchr(repl, '\n', last - repl))) {
+      *repl++ = '\r';
+    }
+
+    if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
+      ttywrite("\033[200~", 6, 0);
+    ttywrite((char *)data, nitems * format / 8, 1);
+    if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
+      ttywrite("\033[201~", 6, 0);
+    XFree(data);
+    /* number of 32-bit chunks returned */
+    ofs += nitems * format / 32;
+  } while (rem > 0);
+
+  /*
+   * Deleting the property again tells the selection owner to send the
+   * next data chunk in the property.
+   */
+  XDeleteProperty(xw.dpy, xw.win, (int)property);
+}
+
+void xclipcopy(void) { clipcopy(NULL); }
+
+void selclear_(XEvent *e) { selclear(); }
+
+void selrequest(XEvent *e) {
+  XSelectionRequestEvent *xsre;
+  XSelectionEvent xev;
+  Atom xa_targets, string, clipboard;
+  char *seltext;
+
+  xsre = (XSelectionRequestEvent *)e;
+  xev.type = SelectionNotify;
+  xev.requestor = xsre->requestor;
+  xev.selection = xsre->selection;
+  xev.target = xsre->target;
+  xev.time = xsre->time;
+  if (xsre->property == None)
+    xsre->property = xsre->target;
+
+  /* reject */
+  xev.property = None;
+
+  xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
+  if (xsre->target == xa_targets) {
+    /* respond with the supported type */
+    string = xsel.xtarget;
+    XChangeProperty(xsre->display, xsre->requestor, xsre->property, XA_ATOM, 32,
+                    PropModeReplace, (uchar *)&string, 1);
+    xev.property = xsre->property;
+  } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
+    /*
+     * xith XA_STRING non ascii characters may be incorrect in the
+     * requestor. It is not our problem, use utf8.
+     */
+    clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
+    if (xsre->selection == XA_PRIMARY) {
+      seltext = xsel.primary;
+    } else if (xsre->selection == clipboard) {
+      seltext = xsel.clipboard;
+    } else {
+      fprintf(stderr, "Unhandled clipboard selection 0x%lx\n", xsre->selection);
+      return;
+    }
+    if (seltext != NULL) {
+      XChangeProperty(xsre->display, xsre->requestor, xsre->property,
+                      xsre->target, 8, PropModeReplace, (uchar *)seltext,
+                      strlen(seltext));
+      xev.property = xsre->property;
+    }
+  }
+
+  /* all done, send a notification to the listener */
+  if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *)&xev))
+    fprintf(stderr, "Error sending SelectionNotify event\n");
+}
+
+void setsel(char *str, Time t) {
+  if (!str)
+    return;
+
+  free(xsel.primary);
+  xsel.primary = str;
+
+  XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
+  if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
+    selclear();
+  clipcopy(NULL);
+}
+
+void xsetsel(char *str) { setsel(str, CurrentTime); }
+
+void brelease(XEvent *e) {
+  if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+    mousereport(e);
+    return;
+  }
+
+  if (mouseaction(e, 1))
+    return;
+  if (e->xbutton.button == Button1)
+    mousesel(e, 1);
+}
+
+void bmotion(XEvent *e) {
+  if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
+    mousereport(e);
+    return;
+  }
+
+  mousesel(e, 0);
+}
+
+void cresize(int width, int height) {
+  int col, row;
+
+  if (width != 0)
+    win.w = width;
+  if (height != 0)
+    win.h = height;
+
+  col = (win.w - 2 * borderpx) / win.cw;
+  row = (win.h - 2 * borderpx) / win.ch;
+  col = MAX(1, col);
+  row = MAX(1, row);
+
+  tresize(col, row);
+  xresize(col, row);
+  ttyresize(win.tw, win.th);
+}
+
+void xresize(int col, int row) {
+  win.tw = col * win.cw;
+  win.th = row * win.ch;
+
+  XFreePixmap(xw.dpy, xw.buf);
+  xw.buf =
+      XCreatePixmap(xw.dpy, xw.win, win.w, win.h, DefaultDepth(xw.dpy, xw.scr));
+  XftDrawChange(xw.draw, xw.buf);
+  xclear(0, 0, win.w, win.h);
+
+  /* resize to new width */
+  xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
+}
+
+ushort sixd_to_16bit(int x) { return x == 0 ? 0 : 0x3737 + 0x2828 * x; }
+
+int xloadcolor(int i, const char *name, Color *ncolor) {
+  XRenderColor color = {.alpha = 0xffff};
+
+  if (!name) {
+    if (BETWEEN(i, 16, 255)) {  /* 256 color */
+      if (i < 6 * 6 * 6 + 16) { /* same colors as xterm */
+        color.red = sixd_to_16bit(((i - 16) / 36) % 6);
+        color.green = sixd_to_16bit(((i - 16) / 6) % 6);
+        color.blue = sixd_to_16bit(((i - 16) / 1) % 6);
+      } else { /* greyscale */
+        color.red = 0x0808 + 0x0a0a * (i - (6 * 6 * 6 + 16));
+        color.green = color.blue = color.red;
+      }
+      return XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, ncolor);
+    } else
+      name = colorname[i];
+  }
+
+  return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
+}
+
+void xloadcols(void) {
+  int i;
+  static int loaded;
+  Color *cp;
+
+  if (loaded) {
+    for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
+      XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
+  } else {
+    dc.collen = MAX(LEN(colorname), 256);
+    dc.col = xmalloc(dc.collen * sizeof(Color));
+  }
+
+  for (i = 0; i < dc.collen; i++)
+    if (!xloadcolor(i, NULL, &dc.col[i])) {
+      if (colorname[i])
+        die("could not allocate color '%s'\n", colorname[i]);
+      else
+        die("could not allocate color %d\n", i);
+    }
+  loaded = 1;
+}
+
+int xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b) {
+  if (!BETWEEN(x, 0, dc.collen))
+    return 1;
+
+  *r = dc.col[x].color.red >> 8;
+  *g = dc.col[x].color.green >> 8;
+  *b = dc.col[x].color.blue >> 8;
+
+  return 0;
+}
+
+int xsetcolorname(int x, const char *name) {
+  Color ncolor;
+
+  if (!BETWEEN(x, 0, dc.collen))
+    return 1;
+
+  if (!xloadcolor(x, name, &ncolor))
+    return 1;
+
+  XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
+  dc.col[x] = ncolor;
+
+  return 0;
+}
+
+/*
+ * Absolute coordinates.
+ */
+void xclear(int x1, int y1, int x2, int y2) {
+  XftDrawRect(xw.draw, &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
+              x1, y1, x2 - x1, y2 - y1);
+}
+
+void xhints(void) {
+  XClassHint class = {opt_name ? opt_name : "st", opt_class ? opt_class : "St"};
+  XWMHints wm = {.flags = InputHint, .input = 1};
+  XSizeHints *sizeh;
+
+  sizeh = XAllocSizeHints();
+
+  sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
+  sizeh->height = win.h;
+  sizeh->width = win.w;
+  sizeh->height_inc = win.ch;
+  sizeh->width_inc = win.cw;
+  sizeh->base_height = 2 * borderpx;
+  sizeh->base_width = 2 * borderpx;
+  sizeh->min_height = win.ch + 2 * borderpx;
+  sizeh->min_width = win.cw + 2 * borderpx;
+  if (xw.isfixed) {
+    sizeh->flags |= PMaxSize;
+    sizeh->min_width = sizeh->max_width = win.w;
+    sizeh->min_height = sizeh->max_height = win.h;
+  }
+  if (xw.gm & (XValue | YValue)) {
+    sizeh->flags |= USPosition | PWinGravity;
+    sizeh->x = xw.l;
+    sizeh->y = xw.t;
+    sizeh->win_gravity = xgeommasktogravity(xw.gm);
+  }
+
+  XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
+  XFree(sizeh);
+}
+
+int xgeommasktogravity(int mask) {
+  switch (mask & (XNegative | YNegative)) {
+  case 0:
+    return NorthWestGravity;
+  case XNegative:
+    return NorthEastGravity;
+  case YNegative:
+    return SouthWestGravity;
+  }
+
+  return SouthEastGravity;
+}
+
+int xloadfont(Font *f, FcPattern *pattern) {
+  FcPattern *configured;
+  FcPattern *match;
+  FcResult result;
+  XGlyphInfo extents;
+  int wantattr, haveattr;
+
+  /*
+   * Manually configure instead of calling XftMatchFont
+   * so that we can use the configured pattern for
+   * "missing glyph" lookups.
+   */
+  configured = FcPatternDuplicate(pattern);
+  if (!configured)
+    return 1;
+
+  FcConfigSubstitute(NULL, configured, FcMatchPattern);
+  XftDefaultSubstitute(xw.dpy, xw.scr, configured);
+
+  match = FcFontMatch(NULL, configured, &result);
+  if (!match) {
+    FcPatternDestroy(configured);
+    return 1;
+  }
+
+  if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
+    FcPatternDestroy(configured);
+    FcPatternDestroy(match);
+    return 1;
+  }
+
+  if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
+       XftResultMatch)) {
+    /*
+     * Check if xft was unable to find a font with the appropriate
+     * slant but gave us one anyway. Try to mitigate.
+     */
+    if ((XftPatternGetInteger(f->match->pattern, "slant", 0, &haveattr) !=
+         XftResultMatch) ||
+        haveattr < wantattr) {
+      f->badslant = 1;
+      fputs("font slant does not match\n", stderr);
+    }
+  }
+
+  if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
+       XftResultMatch)) {
+    if ((XftPatternGetInteger(f->match->pattern, "weight", 0, &haveattr) !=
+         XftResultMatch) ||
+        haveattr != wantattr) {
+      f->badweight = 1;
+      fputs("font weight does not match\n", stderr);
+    }
+  }
+
+  XftTextExtentsUtf8(xw.dpy, f->match, (const FcChar8 *)ascii_printable,
+                     strlen(ascii_printable), &extents);
+
+  f->set = NULL;
+  f->pattern = configured;
+
+  f->ascent = f->match->ascent;
+  f->descent = f->match->descent;
+  f->lbearing = 0;
+  f->rbearing = f->match->max_advance_width;
+
+  f->height = f->ascent + f->descent;
+  f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
+
+  return 0;
+}
+
+void xloadfonts(const char *fontstr, double fontsize) {
+  FcPattern *pattern;
+  double fontval;
+
+  if (fontstr[0] == '-')
+    pattern = XftXlfdParse(fontstr, False, False);
+  else
+    pattern = FcNameParse((const FcChar8 *)fontstr);
+
+  if (!pattern)
+    die("can't open font %s\n", fontstr);
+
+  if (fontsize > 1) {
+    FcPatternDel(pattern, FC_PIXEL_SIZE);
+    FcPatternDel(pattern, FC_SIZE);
+    FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
+    usedfontsize = fontsize;
+  } else {
+    if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
+        FcResultMatch) {
+      usedfontsize = fontval;
+    } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
+               FcResultMatch) {
+      usedfontsize = -1;
+    } else {
+      /*
+       * Default font size is 12, if none given. This is to
+       * have a known usedfontsize value.
+       */
+      FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
+      usedfontsize = 12;
+    }
+    defaultfontsize = usedfontsize;
+  }
+
+  if (xloadfont(&dc.font, pattern))
+    die("can't open font %s\n", fontstr);
+
+  if (usedfontsize < 0) {
+    FcPatternGetDouble(dc.font.match->pattern, FC_PIXEL_SIZE, 0, &fontval);
+    usedfontsize = fontval;
+    if (fontsize == 0)
+      defaultfontsize = fontval;
+  }
+
+  /* Setting character width and height. */
+  win.cw = ceilf(dc.font.width * cwscale);
+  win.ch = ceilf(dc.font.height * chscale);
+
+  FcPatternDel(pattern, FC_SLANT);
+  FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
+  if (xloadfont(&dc.ifont, pattern))
+    die("can't open font %s\n", fontstr);
+
+  FcPatternDel(pattern, FC_WEIGHT);
+  FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
+  if (xloadfont(&dc.ibfont, pattern))
+    die("can't open font %s\n", fontstr);
+
+  FcPatternDel(pattern, FC_SLANT);
+  FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
+  if (xloadfont(&dc.bfont, pattern))
+    die("can't open font %s\n", fontstr);
+
+  FcPatternDestroy(pattern);
+}
+
+int xloadsparefont(FcPattern *pattern, int flags) {
+  FcPattern *match;
+  FcResult result;
+
+  match = FcFontMatch(NULL, pattern, &result);
+  if (!match) {
+    return 1;
+  }
+
+  if (!(frc[frclen].font = XftFontOpenPattern(xw.dpy, match))) {
+    FcPatternDestroy(match);
+    return 1;
+  }
+
+  frc[frclen].flags = flags;
+  /* Believe U+0000 glyph will present in each default font */
+  frc[frclen].unicodep = 0;
+  frclen++;
+
+  return 0;
+}
+
+void xloadsparefonts(void) {
+  FcPattern *pattern;
+  double sizeshift, fontval;
+  int fc;
+  char **fp;
+
+  if (frclen != 0)
+    die("can't embed spare fonts. cache isn't empty");
+
+  /* Calculate count of spare fonts */
+  fc = sizeof(font2) / sizeof(*font2);
+  if (fc == 0)
+    return;
+
+  /* Allocate memory for cache entries. */
+  if (frccap < 4 * fc) {
+    frccap += 4 * fc - frccap;
+    frc = xrealloc(frc, frccap * sizeof(Fontcache));
+  }
+
+  for (fp = font2; fp - font2 < fc; ++fp) {
+
+    if (**fp == '-')
+      pattern = XftXlfdParse(*fp, False, False);
+    else
+      pattern = FcNameParse((FcChar8 *)*fp);
+
+    if (!pattern)
+      die("can't open spare font %s\n", *fp);
+
+    if (defaultfontsize > 0) {
+      sizeshift = usedfontsize - defaultfontsize;
+      if (sizeshift != 0 && FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0,
+                                               &fontval) == FcResultMatch) {
+        fontval += sizeshift;
+        FcPatternDel(pattern, FC_PIXEL_SIZE);
+        FcPatternDel(pattern, FC_SIZE);
+        FcPatternAddDouble(pattern, FC_PIXEL_SIZE, fontval);
+      }
+    }
+
+    FcPatternAddBool(pattern, FC_SCALABLE, 1);
+
+    FcConfigSubstitute(NULL, pattern, FcMatchPattern);
+    XftDefaultSubstitute(xw.dpy, xw.scr, pattern);
+
+    if (xloadsparefont(pattern, FRC_NORMAL))
+      die("can't open spare font %s\n", *fp);
+
+    FcPatternDel(pattern, FC_SLANT);
+    FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
+    if (xloadsparefont(pattern, FRC_ITALIC))
+      die("can't open spare font %s\n", *fp);
+
+    FcPatternDel(pattern, FC_WEIGHT);
+    FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
+    if (xloadsparefont(pattern, FRC_ITALICBOLD))
+      die("can't open spare font %s\n", *fp);
+
+    FcPatternDel(pattern, FC_SLANT);
+    FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
+    if (xloadsparefont(pattern, FRC_BOLD))
+      die("can't open spare font %s\n", *fp);
+
+    FcPatternDestroy(pattern);
+  }
+}
+
+void xunloadfont(Font *f) {
+  XftFontClose(xw.dpy, f->match);
+  FcPatternDestroy(f->pattern);
+  if (f->set)
+    FcFontSetDestroy(f->set);
+}
+
+void xunloadfonts(void) {
+  /* Free the loaded fonts in the font cache.  */
+  while (frclen > 0)
+    XftFontClose(xw.dpy, frc[--frclen].font);
+
+  xunloadfont(&dc.font);
+  xunloadfont(&dc.bfont);
+  xunloadfont(&dc.ifont);
+  xunloadfont(&dc.ibfont);
+}
+
+int ximopen(Display *dpy) {
+  XIMCallback imdestroy = {.client_data = NULL, .callback = ximdestroy};
+  XICCallback icdestroy = {.client_data = NULL, .callback = xicdestroy};
+
+  xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
+  if (xw.ime.xim == NULL)
+    return 0;
+
+  if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL))
+    fprintf(stderr, "XSetIMValues: "
+                    "Could not set XNDestroyCallback.\n");
+
+  xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot, NULL);
+
+  if (xw.ime.xic == NULL) {
+    xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle,
+                           XIMPreeditNothing | XIMStatusNothing, XNClientWindow,
+                           xw.win, XNDestroyCallback, &icdestroy, NULL);
+  }
+  if (xw.ime.xic == NULL)
+    fprintf(stderr, "XCreateIC: Could not create input context.\n");
+
+  return 1;
+}
+
+void ximinstantiate(Display *dpy, XPointer client, XPointer call) {
+  if (ximopen(dpy))
+    XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL, ximinstantiate,
+                                     NULL);
+}
+
+void ximdestroy(XIM xim, XPointer client, XPointer call) {
+  xw.ime.xim = NULL;
+  XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL, ximinstantiate,
+                                 NULL);
+  XFree(xw.ime.spotlist);
+}
+
+int xicdestroy(XIC xim, XPointer client, XPointer call) {
+  xw.ime.xic = NULL;
+  return 1;
+}
+
+void xinit(int cols, int rows) {
+  XGCValues gcvalues;
+  Cursor cursor;
+  Window parent;
+  pid_t thispid = getpid();
+  XColor xmousefg, xmousebg;
+
+  xw.scr = XDefaultScreen(xw.dpy);
+  xw.vis = XDefaultVisual(xw.dpy, xw.scr);
+
+  /* font */
+  if (!FcInit())
+    die("could not init fontconfig.\n");
+
+  usedfont = (opt_font == NULL) ? font : opt_font;
+  xloadfonts(usedfont, 0);
+
+  /* spare fonts */
+  xloadsparefonts();
+
+  /* colors */
+  xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
+  xloadcols();
+
+  /* adjust fixed window geometry */
+  win.w = 2 * borderpx + cols * win.cw;
+  win.h = 2 * borderpx + rows * win.ch;
+  if (xw.gm & XNegative)
+    xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
+  if (xw.gm & YNegative)
+    xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
+
+  /* Events */
+  xw.attrs.background_pixel = dc.col[defaultbg].pixel;
+  xw.attrs.border_pixel = dc.col[defaultbg].pixel;
+  xw.attrs.bit_gravity = NorthWestGravity;
+  xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask |
+                        ExposureMask | VisibilityChangeMask |
+                        StructureNotifyMask | ButtonMotionMask |
+                        ButtonPressMask | ButtonReleaseMask;
+  xw.attrs.colormap = xw.cmap;
+
+  if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
+    parent = XRootWindow(xw.dpy, xw.scr);
+  xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t, win.w, win.h, 0,
+                         XDefaultDepth(xw.dpy, xw.scr), InputOutput, xw.vis,
+                         CWBackPixel | CWBorderPixel | CWBitGravity |
+                             CWEventMask | CWColormap,
+                         &xw.attrs);
+
+  memset(&gcvalues, 0, sizeof(gcvalues));
+  gcvalues.graphics_exposures = False;
+  dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures, &gcvalues);
+  xw.buf =
+      XCreatePixmap(xw.dpy, xw.win, win.w, win.h, DefaultDepth(xw.dpy, xw.scr));
+  XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
+  XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
+
+  /* font spec buffer */
+  xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
+
+  /* Xft rendering context */
+  xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
+
+  /* input methods */
+  if (!ximopen(xw.dpy)) {
+    XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL, ximinstantiate,
+                                   NULL);
+  }
+
+  /* white cursor, black outline */
+  cursor = XCreateFontCursor(xw.dpy, mouseshape);
+  XDefineCursor(xw.dpy, xw.win, cursor);
+
+  if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
+    xmousefg.red = 0xffff;
+    xmousefg.green = 0xffff;
+    xmousefg.blue = 0xffff;
+  }
+
+  if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
+    xmousebg.red = 0x0000;
+    xmousebg.green = 0x0000;
+    xmousebg.blue = 0x0000;
+  }
+
+  XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
+
+  xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
+  xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
+  xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
+  xw.netwmiconname = XInternAtom(xw.dpy, "_NET_WM_ICON_NAME", False);
+  XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
+
+  xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
+  XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32, PropModeReplace,
+                  (uchar *)&thispid, 1);
+
+  win.mode = MODE_NUMLOCK;
+  resettitle();
+  xhints();
+  XMapWindow(xw.dpy, xw.win);
+  XSync(xw.dpy, False);
+
+  clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
+  clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
+  xsel.primary = NULL;
+  xsel.clipboard = NULL;
+  xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
+  if (xsel.xtarget == None)
+    xsel.xtarget = XA_STRING;
+}
+
+int xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len,
+                        int x, int y) {
+  float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
+  ushort mode, prevmode = USHRT_MAX;
+  Font *font = &dc.font;
+  int frcflags = FRC_NORMAL;
+  float runewidth = win.cw;
+  Rune rune;
+  FT_UInt glyphidx;
+  FcResult fcres;
+  FcPattern *fcpattern, *fontpattern;
+  FcFontSet *fcsets[] = {NULL};
+  FcCharSet *fccharset;
+  int i, f, numspecs = 0;
+
+  for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
+    /* Fetch rune and mode for current glyph. */
+    rune = glyphs[i].u;
+    mode = glyphs[i].mode;
+
+    /* Skip dummy wide-character spacing. */
+    if (mode == ATTR_WDUMMY)
+      continue;
+
+    /* Determine font for glyph if different from previous glyph. */
+    if (prevmode != mode) {
+      prevmode = mode;
+      font = &dc.font;
+      frcflags = FRC_NORMAL;
+      runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
+      if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
+        font = &dc.ibfont;
+        frcflags = FRC_ITALICBOLD;
+      } else if (mode & ATTR_ITALIC) {
+        font = &dc.ifont;
+        frcflags = FRC_ITALIC;
+      } else if (mode & ATTR_BOLD) {
+        font = &dc.bfont;
+        frcflags = FRC_BOLD;
+      }
+      yp = winy + font->ascent;
+    }
+
+    /* Lookup character index with default font. */
+    glyphidx = XftCharIndex(xw.dpy, font->match, rune);
+    if (glyphidx) {
+      specs[numspecs].font = font->match;
+      specs[numspecs].glyph = glyphidx;
+      specs[numspecs].x = (short)xp;
+      specs[numspecs].y = (short)yp;
+      xp += runewidth;
+      numspecs++;
+      continue;
+    }
+
+    /* Fallback on font cache, search the font cache for match. */
+    for (f = 0; f < frclen; f++) {
+      glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
+      /* Everything correct. */
+      if (glyphidx && frc[f].flags == frcflags)
+        break;
+      /* We got a default font for a not found glyph. */
+      if (!glyphidx && frc[f].flags == frcflags && frc[f].unicodep == rune) {
+        break;
+      }
+    }
+
+    /* Nothing was found. Use fontconfig to find matching font. */
+    if (f >= frclen) {
+      if (!font->set)
+        font->set = FcFontSort(0, font->pattern, 1, 0, &fcres);
+      fcsets[0] = font->set;
+
+      /*
+       * Nothing was found in the cache. Now use
+       * some dozen of Fontconfig calls to get the
+       * font for one single character.
+       *
+       * Xft and fontconfig are design failures.
+       */
+      fcpattern = FcPatternDuplicate(font->pattern);
+      fccharset = FcCharSetCreate();
+
+      FcCharSetAddChar(fccharset, rune);
+      FcPatternAddCharSet(fcpattern, FC_CHARSET, fccharset);
+      FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
+
+      FcConfigSubstitute(0, fcpattern, FcMatchPattern);
+      FcDefaultSubstitute(fcpattern);
+
+      fontpattern = FcFontSetMatch(0, fcsets, 1, fcpattern, &fcres);
+
+      /* Allocate memory for the new cache entry. */
+      if (frclen >= frccap) {
+        frccap += 16;
+        frc = xrealloc(frc, frccap * sizeof(Fontcache));
+      }
+
+      frc[frclen].font = XftFontOpenPattern(xw.dpy, fontpattern);
+      if (!frc[frclen].font)
+        die("XftFontOpenPattern failed seeking fallback font: %s\n",
+            strerror(errno));
+      frc[frclen].flags = frcflags;
+      frc[frclen].unicodep = rune;
+
+      glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
+
+      f = frclen;
+      frclen++;
+
+      FcPatternDestroy(fcpattern);
+      FcCharSetDestroy(fccharset);
+    }
+
+    specs[numspecs].font = frc[f].font;
+    specs[numspecs].glyph = glyphidx;
+    specs[numspecs].x = (short)xp;
+    specs[numspecs].y = (short)yp;
+    xp += runewidth;
+    numspecs++;
+  }
+
+  return numspecs;
+}
+
+void xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len,
+                         int x, int y) {
+  int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
+  int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
+      width = charlen * win.cw;
+  Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
+  XRenderColor colfg, colbg;
+  XRectangle r;
+
+  /* Fallback on color display for attributes not supported by the font */
+  if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
+    if (dc.ibfont.badslant || dc.ibfont.badweight)
+      base.fg = defaultattr;
+  } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
+             (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
+    base.fg = defaultattr;
+  }
+
+  if (IS_TRUECOL(base.fg)) {
+    colfg.alpha = 0xffff;
+    colfg.red = TRUERED(base.fg);
+    colfg.green = TRUEGREEN(base.fg);
+    colfg.blue = TRUEBLUE(base.fg);
+    XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
+    fg = &truefg;
+  } else {
+    fg = &dc.col[base.fg];
+  }
+
+  if (IS_TRUECOL(base.bg)) {
+    colbg.alpha = 0xffff;
+    colbg.green = TRUEGREEN(base.bg);
+    colbg.red = TRUERED(base.bg);
+    colbg.blue = TRUEBLUE(base.bg);
+    XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
+    bg = &truebg;
+  } else {
+    bg = &dc.col[base.bg];
+  }
+
+  if (IS_SET(MODE_REVERSE)) {
+    if (fg == &dc.col[defaultfg]) {
+      fg = &dc.col[defaultbg];
+    } else {
+      colfg.red = ~fg->color.red;
+      colfg.green = ~fg->color.green;
+      colfg.blue = ~fg->color.blue;
+      colfg.alpha = fg->color.alpha;
+      XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
+      fg = &revfg;
+    }
+
+    if (bg == &dc.col[defaultbg]) {
+      bg = &dc.col[defaultfg];
+    } else {
+      colbg.red = ~bg->color.red;
+      colbg.green = ~bg->color.green;
+      colbg.blue = ~bg->color.blue;
+      colbg.alpha = bg->color.alpha;
+      XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
+      bg = &revbg;
+    }
+  }
+
+  if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
+    colfg.red = fg->color.red / 2;
+    colfg.green = fg->color.green / 2;
+    colfg.blue = fg->color.blue / 2;
+    colfg.alpha = fg->color.alpha;
+    XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
+    fg = &revfg;
+  }
+
+  if (base.mode & ATTR_REVERSE) {
+    temp = fg;
+    fg = bg;
+    bg = temp;
+  }
+
+  if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
+    fg = bg;
+
+  if (base.mode & ATTR_INVISIBLE)
+    fg = bg;
+
+  /* Intelligent cleaning up of the borders. */
+  if (x == 0) {
+    xclear(0, (y == 0) ? 0 : winy, borderpx,
+           winy + win.ch + ((winy + win.ch >= borderpx + win.th) ? win.h : 0));
+  }
+  if (winx + width >= borderpx + win.tw) {
+    xclear(winx + width, (y == 0) ? 0 : winy, win.w,
+           ((winy + win.ch >= borderpx + win.th) ? win.h : (winy + win.ch)));
+  }
+  if (y == 0)
+    xclear(winx, 0, winx + width, borderpx);
+  if (winy + win.ch >= borderpx + win.th)
+    xclear(winx, winy + win.ch, winx + width, win.h);
+
+  /* Clean up the region we want to draw to. */
+  XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
+
+  /* Set the clip region because Xft is sometimes dirty. */
+  r.x = 0;
+  r.y = 0;
+  r.height = win.ch;
+  r.width = width;
+  XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
+
+  /* Render the glyphs. */
+  XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
+
+  /* Render underline and strikethrough. */
+  if (base.mode & ATTR_UNDERLINE) {
+    XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1, width, 1);
+  }
+
+  if (base.mode & ATTR_STRUCK) {
+    XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3, width, 1);
+  }
+
+  /* Reset clip to none. */
+  XftDrawSetClip(xw.draw, 0);
+}
+
+void xdrawglyph(Glyph g, int x, int y) {
+  int numspecs;
+  XftGlyphFontSpec spec;
+
+  numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
+  xdrawglyphfontspecs(&spec, g, numspecs, x, y);
+}
+
+void xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og) {
+  Color drawcol;
+  XRenderColor colbg;
+
+  /* remove the old cursor */
+  if (selected(ox, oy))
+    og.mode ^= ATTR_REVERSE;
+  xdrawglyph(og, ox, oy);
+
+  if (IS_SET(MODE_HIDE))
+    return;
+
+  /*
+   * Select the right color for the right mode.
+   */
+  g.mode &= ATTR_BOLD | ATTR_ITALIC | ATTR_UNDERLINE | ATTR_STRUCK | ATTR_WIDE;
+
+  if (IS_SET(MODE_REVERSE)) {
+    g.mode |= ATTR_REVERSE;
+    g.bg = defaultfg;
+    if (selected(cx, cy)) {
+      drawcol = dc.col[defaultcs];
+      g.fg = defaultrcs;
+    } else {
+      drawcol = dc.col[defaultrcs];
+      g.fg = defaultcs;
+    }
+  } else {
+    if (selected(cx, cy)) {
+      g.fg = defaultfg;
+      g.bg = defaultrcs;
+    } else {
+      /** this is the main part of the dynamic cursor color patch */
+      g.bg = g.fg;
+      g.fg = defaultbg;
+    }
+
+    /**
+     * and this is the second part of the dynamic cursor color patch.
+     * it handles the `drawcol` variable
+     */
+    if (IS_TRUECOL(g.bg)) {
+      colbg.alpha = 0xffff;
+      colbg.red = TRUERED(g.bg);
+      colbg.green = TRUEGREEN(g.bg);
+      colbg.blue = TRUEBLUE(g.bg);
+      XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &drawcol);
+    } else {
+      drawcol = dc.col[g.bg];
+    }
+  }
+
+  /* draw the new one */
+  if (IS_SET(MODE_FOCUSED)) {
+    switch (win.cursor) {
+    default:
+    case 0: /* blinking block */
+    case 1: /* blinking block (default) */
+      if (IS_SET(MODE_BLINK))
+        break;
+      /* FALLTHROUGH */
+    case 2: /* steady block */
+      xdrawglyph(g, cx, cy);
+      break;
+    case 3: /* blinking underline */
+      if (IS_SET(MODE_BLINK))
+        break;
+      /* FALLTHROUGH */
+    case 4: /* steady underline */
+      XftDrawRect(xw.draw, &drawcol, borderpx + cx * win.cw,
+                  borderpx + (cy + 1) * win.ch - cursorthickness, win.cw,
+                  cursorthickness);
+      break;
+    case 5: /* blinking bar */
+      if (IS_SET(MODE_BLINK))
+        break;
+      /* FALLTHROUGH */
+    case 6: /* steady bar */
+      XftDrawRect(xw.draw, &drawcol, borderpx + cx * win.cw,
+                  borderpx + cy * win.ch, cursorthickness, win.ch);
+      break;
+    case 7: /* blinking st cursor */
+      if (IS_SET(MODE_BLINK))
+        break;
+      /* FALLTHROUGH */
+    case 8: /* steady st cursor */
+      g.u = stcursor;
+      xdrawglyph(g, cx, cy);
+      break;
+    }
+  } else {
+    XftDrawRect(xw.draw, &drawcol, borderpx + cx * win.cw,
+                borderpx + cy * win.ch, win.cw - 1, 1);
+    XftDrawRect(xw.draw, &drawcol, borderpx + cx * win.cw,
+                borderpx + cy * win.ch, 1, win.ch - 1);
+    XftDrawRect(xw.draw, &drawcol, borderpx + (cx + 1) * win.cw - 1,
+                borderpx + cy * win.ch, 1, win.ch - 1);
+    XftDrawRect(xw.draw, &drawcol, borderpx + cx * win.cw,
+                borderpx + (cy + 1) * win.ch - 1, win.cw, 1);
+  }
+}
+
+void xsetenv(void) {
+  char buf[sizeof(long) * 8 + 1];
+
+  snprintf(buf, sizeof(buf), "%lu", xw.win);
+  setenv("WINDOWID", buf, 1);
+}
+
+void xseticontitle(char *p) {
+  XTextProperty prop;
+  DEFAULT(p, opt_title);
+
+  if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle, &prop) !=
+      Success)
+    return;
+  XSetWMIconName(xw.dpy, xw.win, &prop);
+  XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmiconname);
+  XFree(prop.value);
+}
+
+void xsettitle(char *p) {
+  XTextProperty prop;
+  DEFAULT(p, opt_title);
+
+  if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle, &prop) !=
+      Success)
+    return;
+  XSetWMName(xw.dpy, xw.win, &prop);
+  XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
+  XFree(prop.value);
+}
+
+int xstartdraw(void) {
+  if (IS_SET(MODE_VISIBLE))
+    XCopyArea(xw.dpy, xw.win, xw.buf, dc.gc, 0, 0, win.w, win.h, 0, 0);
+  return IS_SET(MODE_VISIBLE);
+}
+
+void xdrawline(Line line, int x1, int y1, int x2) {
+  int i, x, ox, numspecs;
+  Glyph base, new;
+  XftGlyphFontSpec *specs = xw.specbuf;
+
+  numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
+  i = ox = 0;
+  for (x = x1; x < x2 && i < numspecs; x++) {
+    new = line[x];
+    if (new.mode == ATTR_WDUMMY)
+      continue;
+    if (selected(x, y1))
+      new.mode ^= ATTR_REVERSE;
+    if (i > 0 && ATTRCMP(base, new)) {
+      xdrawglyphfontspecs(specs, base, i, ox, y1);
+      specs += i;
+      numspecs -= i;
+      i = 0;
+    }
+    if (i == 0) {
+      ox = x;
+      base = new;
+    }
+    i++;
+  }
+  if (i > 0)
+    xdrawglyphfontspecs(specs, base, i, ox, y1);
+}
+
+void xfinishdraw(void) {
+  XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w, win.h, 0, 0);
+  XSetForeground(xw.dpy, dc.gc,
+                 dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg].pixel);
+}
+
+void xximspot(int x, int y) {
+  if (xw.ime.xic == NULL)
+    return;
+
+  xw.ime.spot.x = borderpx + x * win.cw;
+  xw.ime.spot.y = borderpx + (y + 1) * win.ch;
+
+  XSetICValues(xw.ime.xic, XNPreeditAttributes, xw.ime.spotlist, NULL);
+}
+
+void expose(XEvent *ev) { redraw(); }
+
+void visibility(XEvent *ev) {
+  XVisibilityEvent *e = &ev->xvisibility;
+
+  MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
+}
+
+void unmap(XEvent *ev) { win.mode &= ~MODE_VISIBLE; }
+
+void xsetpointermotion(int set) {
+  MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
+  XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
+}
+
+void xsetmode(int set, unsigned int flags) {
+  int mode = win.mode;
+  MODBIT(win.mode, set, flags);
+  if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
+    redraw();
+}
+
+int xsetcursor(int cursor) {
+  if (!BETWEEN(cursor, 0, 8)) /* 7-8: st extensions */
+    return 1;
+  win.cursor = cursor;
+  cursorblinks = win.cursor == 0 || win.cursor == 1 || win.cursor == 3 ||
+                 win.cursor == 5 || win.cursor == 7;
+  return 0;
+}
+
+void xseturgency(int add) {
+  XWMHints *h = XGetWMHints(xw.dpy, xw.win);
+
+  MODBIT(h->flags, add, XUrgencyHint);
+  XSetWMHints(xw.dpy, xw.win, h);
+  XFree(h);
+}
+
+void xbell(void) {
+  if (!(IS_SET(MODE_FOCUSED)))
+    xseturgency(1);
+  if (bellvolume)
+    XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
+}
+
+void focus(XEvent *ev) {
+  XFocusChangeEvent *e = &ev->xfocus;
+
+  if (e->mode == NotifyGrab)
+    return;
+
+  if (ev->type == FocusIn) {
+    if (xw.ime.xic)
+      XSetICFocus(xw.ime.xic);
+    win.mode |= MODE_FOCUSED;
+    xseturgency(0);
+    if (IS_SET(MODE_FOCUS))
+      ttywrite("\033[I", 3, 0);
+  } else {
+    if (xw.ime.xic)
+      XUnsetICFocus(xw.ime.xic);
+    win.mode &= ~MODE_FOCUSED;
+    if (IS_SET(MODE_FOCUS))
+      ttywrite("\033[O", 3, 0);
+  }
+}
+
+int match(uint mask, uint state) {
+  return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
+}
+
+char *kmap(KeySym k, uint state) {
+  Key *kp;
+  int i;
+
+  /* Check for mapped keys out of X11 function keys. */
+  for (i = 0; i < LEN(mappedkeys); i++) {
+    if (mappedkeys[i] == k)
+      break;
+  }
+  if (i == LEN(mappedkeys)) {
+    if ((k & 0xFFFF) < 0xFD00)
+      return NULL;
+  }
+
+  for (kp = key; kp < key + LEN(key); kp++) {
+    if (kp->k != k)
+      continue;
+
+    if (!match(kp->mask, state))
+      continue;
+
+    if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
+      continue;
+    if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
+      continue;
+
+    if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
+      continue;
+
+    return kp->s;
+  }
+
+  return NULL;
+}
+
+void kpress(XEvent *ev) {
+  XKeyEvent *e = &ev->xkey;
+  KeySym ksym;
+  char buf[64], *customkey;
+  int len;
+  Rune c;
+  Status status;
+  Shortcut *bp;
+
+  if (IS_SET(MODE_KBDLOCK))
+    return;
+
+  if (xw.ime.xic)
+    len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
+  else
+    len = XLookupString(e, buf, sizeof buf, &ksym, NULL);
+  /* 1. shortcuts */
+  for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
+    if (ksym == bp->keysym && match(bp->mod, e->state)) {
+      bp->func(&(bp->arg));
+      return;
+    }
+  }
+
+  /* 2. custom keys from config.h */
+  if ((customkey = kmap(ksym, e->state))) {
+    ttywrite(customkey, strlen(customkey), 1);
+    return;
+  }
+
+  /* 3. composed string from input method */
+  if (len == 0)
+    return;
+  if (len == 1 && e->state & Mod1Mask) {
+    if (IS_SET(MODE_8BIT)) {
+      if (*buf < 0177) {
+        c = *buf | 0x80;
+        len = utf8encode(c, buf);
+      }
+    } else {
+      buf[1] = buf[0];
+      buf[0] = '\033';
+      len = 2;
+    }
+  }
+  ttywrite(buf, len, 1);
+}
+
+void cmessage(XEvent *e) {
+  /*
+   * See xembed specs
+   *  http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
+   */
+  if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
+    if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
+      win.mode |= MODE_FOCUSED;
+      xseturgency(0);
+    } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
+      win.mode &= ~MODE_FOCUSED;
+    }
+  } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
+    ttyhangup();
+    exit(0);
+  }
+}
+
+void resize(XEvent *e) {
+  if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
+    return;
+
+  cresize(e->xconfigure.width, e->xconfigure.height);
+}
+
+void run(void) {
+  XEvent ev;
+  int w = win.w, h = win.h;
+  fd_set rfd;
+  int xfd = XConnectionNumber(xw.dpy), ttyfd, xev, drawing;
+  struct timespec seltv, *tv, now, lastblink, trigger;
+  double timeout;
+
+  /* Waiting for window mapping */
+  do {
+    XNextEvent(xw.dpy, &ev);
+    /*
+     * This XFilterEvent call is required because of XOpenIM. It
+     * does filter out the key event and some client message for
+     * the input method too.
+     */
+    if (XFilterEvent(&ev, None))
+      continue;
+    if (ev.type == ConfigureNotify) {
+      w = ev.xconfigure.width;
+      h = ev.xconfigure.height;
+    }
+  } while (ev.type != MapNotify);
+
+  ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
+  cresize(w, h);
+
+  for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) {
+    FD_ZERO(&rfd);
+    FD_SET(ttyfd, &rfd);
+    FD_SET(xfd, &rfd);
+
+    if (XPending(xw.dpy))
+      timeout = 0; /* existing events might not set xfd */
+
+    seltv.tv_sec = timeout / 1E3;
+    seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec);
+    tv = timeout >= 0 ? &seltv : NULL;
+
+    if (pselect(MAX(xfd, ttyfd) + 1, &rfd, NULL, NULL, tv, NULL) < 0) {
+      if (errno == EINTR)
+        continue;
+      die("select failed: %s\n", strerror(errno));
+    }
+    clock_gettime(CLOCK_MONOTONIC, &now);
+
+    if (FD_ISSET(ttyfd, &rfd))
+      ttyread();
+
+    xev = 0;
+    while (XPending(xw.dpy)) {
+      xev = 1;
+      XNextEvent(xw.dpy, &ev);
+      if (XFilterEvent(&ev, None))
+        continue;
+      if (handler[ev.type])
+        (handler[ev.type])(&ev);
+    }
+
+    /*
+     * To reduce flicker and tearing, when new content or event
+     * triggers drawing, we first wait a bit to ensure we got
+     * everything, and if nothing new arrives - we draw.
+     * We start with trying to wait minlatency ms. If more content
+     * arrives sooner, we retry with shorter and shorter periods,
+     * and eventually draw even without idle after maxlatency ms.
+     * Typically this results in low latency while interacting,
+     * maximum latency intervals during `cat huge.txt`, and perfect
+     * sync with periodic updates from animations/key-repeats/etc.
+     */
+    if (FD_ISSET(ttyfd, &rfd) || xev) {
+      if (!drawing) {
+        trigger = now;
+        if (IS_SET(MODE_BLINK)) {
+          win.mode ^= MODE_BLINK;
+        }
+        lastblink = now;
+        drawing = 1;
+      }
+      timeout = (maxlatency - TIMEDIFF(now, trigger)) / maxlatency * minlatency;
+      if (timeout > 0)
+        continue; /* we have time, try to find idle */
+    }
+
+    /* idle detected or maxlatency exhausted -> draw */
+    timeout = -1;
+    if (blinktimeout && (cursorblinks || tattrset(ATTR_BLINK))) {
+      timeout = blinktimeout - TIMEDIFF(now, lastblink);
+      if (timeout <= 0) {
+        if (-timeout > blinktimeout) /* start visible */
+          win.mode |= MODE_BLINK;
+        win.mode ^= MODE_BLINK;
+        tsetdirtattr(ATTR_BLINK);
+        lastblink = now;
+        timeout = blinktimeout;
+      }
+    }
+
+    draw();
+    XFlush(xw.dpy);
+    drawing = 0;
+  }
+}
+
+int resource_load(XrmDatabase db, char *name, enum resource_type rtype,
+                  void *dst) {
+  char **sdst = dst;
+  int *idst = dst;
+  float *fdst = dst;
+
+  char fullname[256];
+  char fullclass[256];
+  char *type;
+  XrmValue ret;
+
+  snprintf(fullname, sizeof(fullname), "%s.%s", opt_name ? opt_name : "st",
+           name);
+  snprintf(fullclass, sizeof(fullclass), "%s.%s", opt_class ? opt_class : "St",
+           name);
+  fullname[sizeof(fullname) - 1] = fullclass[sizeof(fullclass) - 1] = '\0';
+
+  XrmGetResource(db, fullname, fullclass, &type, &ret);
+  if (ret.addr == NULL || strncmp("String", type, 64))
+    return 1;
+
+  switch (rtype) {
+  case STRING:
+    *sdst = ret.addr;
+    break;
+  case INTEGER:
+    *idst = strtoul(ret.addr, NULL, 10);
+    break;
+  case FLOAT:
+    *fdst = strtof(ret.addr, NULL);
+    break;
+  }
+  return 0;
+}
+
+void config_init(void) {
+  char *resm;
+  XrmDatabase db;
+  ResourcePref *p;
+
+  XrmInitialize();
+  resm = XResourceManagerString(xw.dpy);
+  if (!resm)
+    return;
+
+  db = XrmGetStringDatabase(resm);
+  for (p = resources; p < resources + LEN(resources); p++)
+    resource_load(db, p->name, p->type, p->dst);
+}
+
+void usage(void) {
+  die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
+      " [-n name] [-o file]\n"
+      "          [-T title] [-t title] [-w windowid]"
+      " [[-e] command [args ...]]\n"
+      "       %s [-aiv] [-c class] [-f font] [-g geometry]"
+      " [-n name] [-o file]\n"
+      "          [-T title] [-t title] [-w windowid] -l line"
+      " [stty_args ...]\n",
+      argv0, argv0);
+}
+
+int main(int argc, char *argv[]) {
+  xw.l = xw.t = 0;
+  xw.isfixed = False;
+  xsetcursor(cursorstyle);
+
+  ARGBEGIN {
+  case 'a':
+    allowaltscreen = 0;
+    break;
+  case 'c':
+    opt_class = EARGF(usage());
+    break;
+  case 'e':
+    if (argc > 0)
+      --argc, ++argv;
+    goto run;
+  case 'f':
+    opt_font = EARGF(usage());
+    break;
+  case 'g':
+    xw.gm = XParseGeometry(EARGF(usage()), &xw.l, &xw.t, &cols, &rows);
+    break;
+  case 'i':
+    xw.isfixed = 1;
+    break;
+  case 'o':
+    opt_io = EARGF(usage());
+    break;
+  case 'l':
+    opt_line = EARGF(usage());
+    break;
+  case 'n':
+    opt_name = EARGF(usage());
+    break;
+  case 't':
+  case 'T':
+    opt_title = EARGF(usage());
+    break;
+  case 'w':
+    opt_embed = EARGF(usage());
+    break;
+  case 'v':
+    die("%s " VERSION "\n", argv0);
+    break;
+  default:
+    usage();
+  }
+  ARGEND;
+
+run:
+  if (argc > 0) /* eat all remaining arguments */
+    opt_cmd = argv;
+
+  if (!opt_title)
+    opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
+
+  setlocale(LC_CTYPE, "");
+  XSetLocaleModifiers("");
+
+  if (!(xw.dpy = XOpenDisplay(NULL)))
+    die("Can't open display\n");
+
+  config_init();
+  cols = MAX(cols, 1);
+  rows = MAX(rows, 1);
+  tnew(cols, rows);
+  xinit(cols, rows);
+  xsetenv();
+  selinit();
+  run();
+
+  return 0;
+}