Make git-commit complete both modified files and git-added files.

["Mikael Magnusson" <mikachu@gmail.com>]

This is useful when you've git-added two or more files, but you only
want to commit one of them.
http://git.mikachu.ath.cx/?p=zsh-cvs.git;a=commitdiff_plain;h=commit

diff --git a/Completion/Unix/Command/_git b/Completion/Unix/Command/_git
index 3771da1..dfb9655 100644
--- a/Completion/Unix/Command/_git
+++ b/Completion/Unix/Command/_git
@@ -1568,7 +1568,7 @@ _git-commit () {
     '(-q --quiet -v --verbose)'{-q,--quiet}'[suppress commit summary
message]' \
     '(-q --quiet -v --verbose)'{-v,--verbose}'[show unified diff of
all file changes]' \
     '(-u --untracked-files)'{-u,--untracked-files}'[show files in
untracked directories]' \
-    '*:file:__git_modified_files' \
+    '*:file:__git_changed_files' \
     - '(message)' \
       '--amend[amend the tip of the current branch]' \
       {-c,--reedit-message=}'[use existing commit object and edit log
message]:commit:__git_commits' \
@@ -2624,6 +2624,18 @@ __git_unmerged_files () {
   __git_files $* --unmerged
 }

+#this is for git-commit which can take files both git-added and not
+(( $+functions[__git_changed_files] )) ||
+__git_changed_files () {
+  gitdir=$(_call_program gitdir git rev-parse --git-dir 2>/dev/null)
+  __git_command_successful || return
+
+  files=(${(ps:\0:)"$(_call_program files git diff-index -z
--name-only HEAD 2>/dev/null)"})
+  __git_command_successful || return
+
+  _wanted files expl 'index file' _multi_parts $@ - / files
+}
+
 (( $+functions[__git_tree_files] )) ||
 __git_tree_files () {
   local multi_parts_opts

-- 
Mikael Magnusson