[PATCH] gitk: add support for -G'regex' pickaxe variant

["Zbigniew Jędrzejewski-Szmek" <zbyszek@in.waw.pl>]

From: Martin Langhoff <martin@laptop.org>

git log -G'regex' is a very usable alternative to the classic
pickaxe. Minimal patch to make it usable from gitk.

[zj: reword message]
Signed-off-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
---
Martin's off on holidays, so I'm sending v2 after rewording.

 gitk-git/gitk | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gitk-git/gitk b/gitk-git/gitk
index 22270ce..24eaead 100755
--- a/gitk-git/gitk
+++ b/gitk-git/gitk
@@ -2232,7 +2232,8 @@ proc makewindow {} {
     set gm [makedroplist .tf.lbar.gdttype gdttype \
 		[mc "containing:"] \
 		[mc "touching paths:"] \
-		[mc "adding/removing string:"]]
+		[mc "adding/removing string:"] \
+		[mc "with changes matching regex:"]]
     trace add variable gdttype write gdttype_change
     pack .tf.lbar.gdttype -side left -fill y
 
@@ -4595,6 +4596,8 @@ proc do_file_hl {serial} {
 	set gdtargs [concat -- $relative_paths]
     } elseif {$gdttype eq [mc "adding/removing string:"]} {
 	set gdtargs [list "-S$highlight_files"]
+    } elseif {$gdttype eq [mc "with changes matching regex:"]} {
+	set gdtargs [list "-G$highlight_files"]
     } else {
 	# must be "containing:", i.e. we're searching commit info
 	return
-- 
1.7.11.rc3.129.ga90bc7a.dirty