[PATCH] Teach git.el to mark/unmark files by regexp

[David Christensen <david@endpoint.com>]

Adds the functions git-mark-regexp and git-unmark-regexp to git.el.
Creates a mark-map keymap to support dired-like behavior for
marking/unmarking via regexp.  Also adds these functions to the
menubar.

Signed-off-by: David Christensen <david@endpoint.com>
---
 contrib/emacs/git.el |   25 +++++++++++++++++--------
 1 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/contrib/emacs/git.el b/contrib/emacs/git.el
index 580652c..a982fbe 100644
--- a/contrib/emacs/git.el
+++ b/contrib/emacs/git.el
@@ -950,14 +950,18 @@ Return the list of files that haven't been handled."
   (when goal-column (move-to-column goal-column)))
 
 (defun git-mark-regexp (re)
-  "Mark all files which match a provided regexp."
-  (interactive "sMark files matching regular expression: ")
+  "Mark all files which match a provided regexp.  With prefix argument, unmark files which match."
+  (interactive
+   (list
+    (read-from-minibuffer (if current-prefix-arg "Unmark files matching regular expression: " "Mark files matching regular expression: "))))
   (unless git-status (error "Not in git-status buffer."))
-  (ewoc-map (lambda (info) (unless (git-fileinfo->marked info)
-                             (when (string-match re (git-fileinfo->name info))
-                               (setf (git-fileinfo->marked info) t)))) git-status)
-  ; move back to goal column after invalidate
-  (when goal-column (move-to-column goal-column)))
+  (if current-prefix-arg
+      (git-unmark-regexp re)
+    (ewoc-map (lambda (info) (unless (git-fileinfo->marked info)
+                               (when (string-match re (git-fileinfo->name info))
+                                 (setf (git-fileinfo->marked info) t)))) git-status)
+    ; move back to goal column after invalidate
+    (when goal-column (move-to-column goal-column))))
 
 (defun git-unmark-regexp (re)
   "Unmark all files which match a provided regexp."
@@ -1504,7 +1508,12 @@ amended version of it."
     (define-key toggle-map "m" 'git-toggle-all-marks)
     ; the mark submap
     (define-key mark-map "%" 'git-mark-regexp)
-    (define-key mark-map "\C-?" 'git-unmark-regexp)
+    (define-key mark-map "m" 'git-mark-file)
+    (define-key mark-map "u" 'git-unmark-file)
+    (define-key mark-map "t" 'git-toggle-all-marks)
+    (define-key mark-map "!" 'git-unmark-all)
+    (define-key mark-map "?" 'git-unmark-all)
+    (define-key mark-map "\C-?" 'git-unmark-file-up)
     (setq git-status-mode-map map))
   (easy-menu-define git-menu git-status-mode-map
     "Git Menu"
-- 
1.6.0.1.90.g27a6e.dirty