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=pod
=head1 NAME
rl_history_search.pl
=head1 DESCRIPTION
Search within your typed history as you type (something like ctrl-R in bash or other
readline-type applications.)
=head1 INSTALLATION
Copy into your F<~/.irssi/scripts/> directory and load with
C</SCRIPT LOAD F<filename>>.
This script requires that you have first installed and loaded F<uberprompt.pl>
Uberprompt can be downloaded from:
L<https://github.com/shabble/irssi-scripts/raw/master/prompt_info/uberprompt.pl>
and follow the instructions at the top of that file or its README for installation.
If uberprompt.pl is available, but not loaded, this script will make one
attempt to load it before giving up. This eliminates the need to precisely
arrange the startup order of your scripts.
=head1 SETUP
C</bind ^R /history_search_start>
Where C<^R> is a key of your choice.
=head1 USAGE
Type C<ctrl-R> followed by your search string. The prompt line will show
you the most recent command to match the string you've typed.
B<Tip:> You can cycle through multiple matches with C<Ctrl-R> (to select older
matches), and <Ctrl-S> (to select newer matches). Cycling off the end of the
history list returns you to the other end again.
B<NOTE:> C<Ctrl-S> may not work if you have software flow control configured for
your terminal. It may appear to freeze irssi entirely. If this happens, it can
be restored with C<Ctrl-Q>, but you will be unable to use the C<Ctrl-S> binding.
You can disable flow control by running the command C<stty -ixon> in your
terminal, or setting C<defflow off> in your F<~/.screenrc>if using GNU Screen.
=head2 COMMANDS
=over 4
=item C<Enter> selects a match and terminates search mode. B<It will also run
the selected command.>
=item C<Ctrl-G> exits search mode without selecting.
=item C<E<lt>TABE<gt>> will open a new split window, showing all matching
completions. C<E<lt>EscE<gt>> will close the window again, as will any other
action that exits history search mode. Possible candidates can be cycled
through as normal using C<C-r> and <C-s>.
=item Any other ctrl- or meta- key binding will terminate search mode, leaving
the selected item in the input line.
=back
=head1 AUTHORS
Original script L<history_search.pl|https://github.com/coekie/irssi-scripts/blob/master/history_search.pl> Copyright E<copy> 2007 Wouter Coekaerts <coekie@irssi.org>
Copyright E<copy> 2011 Tom Feist C<E<lt>shabble+irssi@metavore.orgE<gt>>
=head1 LICENCE
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 2 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, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=head1 BUGS
faff
=head1 TODO
=over 1
=item * DONE document tab behaviour
=item * add keys (C-n/C-p) to scroll history list if necessary.
=item * DONE if list is bigger than split size, centre it so selected item is visible
=item * INPROG allow a mechanism to select by number from list
=item * steal more of the code from ido_switcher to hilight match positions.
=item * make flex matching optional (key or setting)
=item * add some online help (? or C-h triggered, maybe?)
=item * make temp_split stuff more generic (to be used by help, etc)
=item * figure out why sometimes the split list doesn't update correctly (eg: no matches)
=item * consider tracking history manually (via send command/send text)
=item
=over 4
=item * Pro: we could timestamp it.
=item * Con: Would involve catching up/down and all the other history selection mechanisms.
=item * Compromise - tag history as it comes it (match it with data via sig handlers?)
=back
=item * Possibility of saving/restoring history over sessions?
=back
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