[PATCH] _git: Autocomplete .. for commit ranges

[Daniel Shahaf <d.s@daniel.shahaf.name>]

This patch makes three changes:

- Enable 'git diff o/m<TAB>' to complete to 'origin/master..' with the
  ".." being autoremovable.

  This is implemented by the first hunk.  That hunk is a functional
  subset of Oliver's users/20705, however, the latter hasn't been
  committed.

- Make typing "^" remove the "..", in light of the syntax "foo^..bar".

- Make typing "." _not_ remove the ".." but simply append it, since
  "foo...bar" is a valid and useful syntax.

---
I'm not sure why the ^ needs escaping there — ^ is not special in character
classes when not in first position.

I think this can be further improved, for example, in 'git log
o/m<TAB>--' (for a 'git log HEAD -- file.c' syntax) typing the '-'
should remove the "..".

Cheers,

Daniel


diff --git a/Completion/Unix/Command/_git b/Completion/Unix/Command/_git
index ad1037e..ac3e152 100644
--- a/Completion/Unix/Command/_git
+++ b/Completion/Unix/Command/_git
@@ -5597,8 +5597,8 @@ __git_commits () {
 
 (( $+functions[__git_heads] )) ||
 __git_heads () {
-  __git_heads_local
-  __git_heads_remote
+  __git_heads_local "$@"
+  __git_heads_remote "$@"
 }
 
 (( $+functions[__git_heads_local] )) ||
@@ -5786,7 +5786,7 @@ __git_commit_ranges () {
       if [[ ${PREFIX} = (#b)((\\|)\^)* ]]; then
 	compset -p ${#match[1]}
       else
-	suf=( -S .. -r '.@~ ^:\t\n\-' )
+	suf=( -S .. -r '@~ \^:\t\n\-' )
       fi
     fi
     expl=( $* $suf )