From 9ae4aa07f5b14a7add1b58684513218f46f80767 Mon Sep 17 00:00:00 2001
From: Tom Feist <shabble@metavore.org>
Date: Fri, 8 Apr 2011 23:49:31 +0100
Subject: vim-mode: minimal ex-mode tab-completion. Completes provided only the
 current prefix allows only 1 unique completion.

---
 vim-mode/vim_mode.pl | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/vim-mode/vim_mode.pl b/vim-mode/vim_mode.pl
index e247e35..6ce4d22 100644
--- a/vim-mode/vim_mode.pl
+++ b/vim-mode/vim_mode.pl
@@ -2074,6 +2074,10 @@ sub _parse_mapping_bracket {
 sub _parse_mapping_reverse {
     my ($string) = @_;
 
+    if (not defined $string) {
+        _warn("Unable to reverse-map command: " . join('', @ex_buf));
+        return;
+    }
     # Convert char to <char-name>.
     $string =~ s/ /<Space>/g;
     $string =~ s/\n/<CR>/g;
@@ -2789,7 +2793,11 @@ sub handle_command_ex {
         print "Tab pressed" if DEBUG;
         print "Ex buf contains: " . join('', @ex_buf) if DEBUG;
         @tab_candidates = _tab_complete(join('', @ex_buf), [keys %$commands_ex]);
-
+        _debug("Candidates: " . join(", ", @tab_candidates));
+        if (@tab_candidates == 1) {
+            @ex_buf = ( split('', $tab_candidates[0]), ' ');
+            _set_prompt(':' . join '', @ex_buf);
+        }
     # Ignore control characters for now.
     } elsif ($key > 0 && $key < 32) {
         # TODO: use them later, e.g. completion
-- 
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