GNU bug report logs - #25555
25.1.91; smerge-keep-current -vs- empty change

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From: Tom Tromey <tom <at> tromey.com>
To: Tom Tromey <tom <at> tromey.com>
Cc: 25555 <at> debbugs.gnu.org
Subject: bug#25555: 25.1.91; smerge-keep-current -vs- empty change
Date: Sat, 09 Sep 2017 17:22:28 -0600

This patch fixes the problem for me.

Tom

commit 55289e4ce3adb27a6c03cc42783265cf4d680f25
Author: Tom Tromey <tom <at> tromey.com>
Date:   Sat Sep 9 17:20:43 2017 -0600

    Allow smerge-keep-current to work for empty hunks
    
    Bug#25555
    * lisp/vc/smerge-mode.el (smerge-get-current): Allow point to be at
    match-end.
    * test/lisp/vc/smerge-mode-tests.el: New file.

diff --git a/lisp/vc/smerge-mode.el b/lisp/vc/smerge-mode.el
index f94f8a6..302adfe 100644
--- a/lisp/vc/smerge-mode.el
+++ b/lisp/vc/smerge-mode.el
@@ -725,7 +725,7 @@ smerge-get-current
   (let ((i 3))
     (while (or (not (match-end i))
 	       (< (point) (match-beginning i))
-	       (>= (point) (match-end i)))
+	       (> (point) (match-end i)))
       (cl-decf i))
     i))
 
diff --git a/test/lisp/vc/smerge-mode-tests.el b/test/lisp/vc/smerge-mode-tests.el
new file mode 100644
index 0000000..204a4b9
--- /dev/null
+++ b/test/lisp/vc/smerge-mode-tests.el
@@ -0,0 +1,34 @@
+;; Copyright (C) 2017  Free Software Foundation, Inc
+
+;; Maintainer: emacs-devel <at> gnu.org
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(require 'smerge-mode)
+
+(ert-deftest smerge-mode-test-empty-hunk ()
+  "Regression test for bug #25555"
+  (with-temp-buffer
+    (insert "<<<<<<< one\n")
+    (save-excursion
+      (insert "=======\nLLL\n>>>>>>> end\n"))
+    (smerge-mode)
+    (smerge-keep-current)
+    (should (equal (buffer-substring (point-min) (point-max)) ""))))
+
+(provide 'smerge-mode-tests)

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