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authorTino Calancha <tino.calancha@gmail.com>2018-06-03 23:28:14 +0900
committerTino Calancha <tino.calancha@gmail.com>2018-06-03 23:28:14 +0900
commit50c0624b2aecb9668505eb2cea3f30aecbf6d1ec (patch)
tree2fd3af2490d590854f206b7b33f55f7d7f76ca00
parentdefd53a56c709b8b8c736f0ab3b594490216d300 (diff)
downloademacs-50c0624b2aecb9668505eb2cea3f30aecbf6d1ec.tar.gz
Backport: Preserve case in query-replace undo
If the user query and replaces 'foo' with 'BAR', then undo must comeback to 'foo', not to 'FOO' (Bug#31073). * lisp/replace.el (perform-replace): Bind nocasify to non-nil value during undo/undo-all actions. * test/lisp/replace-tests.el (query-replace-undo-bug31073): Add test. (cherry picked from commit 32dc0cb1b5ae895d237c7118ccaeb084715934fd)
-rw-r--r--lisp/replace.el1
-rw-r--r--test/lisp/replace-tests.el20
2 files changed, 21 insertions, 0 deletions
diff --git a/lisp/replace.el b/lisp/replace.el
index 6cee2253746..d1eabb035d3 100644
--- a/lisp/replace.el
+++ b/lisp/replace.el
@@ -2576,6 +2576,7 @@ It must return a string."
(let ((stack-idx 0)
(stack-len (length stack))
(num-replacements 0)
+ (nocasify t) ; Undo must preserve case (Bug#31073).
search-string
next-replacement)
(while (and (< stack-idx stack-len)
diff --git a/test/lisp/replace-tests.el b/test/lisp/replace-tests.el
index 66c68426607..40a1a31cf7c 100644
--- a/test/lisp/replace-tests.el
+++ b/test/lisp/replace-tests.el
@@ -380,4 +380,24 @@ Each element has the format:
(should (string= "211" (replace-tests--query-replace-undo)))
(should (string= "211" (replace-tests--query-replace-undo 'comma))))
+(ert-deftest query-replace-undo-bug31073 ()
+ "Test for https://debbugs.gnu.org/31073 ."
+ (let ((text "aaa aaa")
+ (count 0))
+ (with-temp-buffer
+ (insert text)
+ (goto-char 1)
+ (cl-letf (((symbol-function 'read-event)
+ (lambda (&rest args)
+ (cl-incf count)
+ (let ((val (pcase count
+ ((or 1 2 3) ?\s) ; replace current and go next
+ (4 ?U) ; undo-all
+ (_ ?q)))) ; exit
+ val))))
+ (perform-replace "a" "B" t nil nil))
+ ;; After undo text must be the same.
+ (should (string= text (buffer-string))))))
+
+
;;; replace-tests.el ends here