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authorNicolas Richard <youngfrog@members.fsf.org>2015-06-19 16:57:26 +0200
committerStephen Berman <stephen.berman@gmx.net>2015-06-19 16:57:26 +0200
commitb9f02cf65a1b41e486f412e6f98644f298129d55 (patch)
tree31170d8808a088bf2a1b77b1a4c54bc265e78e76 /lisp/calendar
parent8b5f2f439b835ad115ce084ba68e0ae38ea40dd8 (diff)
downloademacs-b9f02cf65a1b41e486f412e6f98644f298129d55.tar.gz
Fixes: debbugs:20832
* lisp/calendar/todo-mode.el (todo-show): Signal an error if buffer for adding new todo file is empty but modified.
Diffstat (limited to 'lisp/calendar')
-rw-r--r--lisp/calendar/todo-mode.el5
1 files changed, 5 insertions, 0 deletions
diff --git a/lisp/calendar/todo-mode.el b/lisp/calendar/todo-mode.el
index dcc960fb9bf..6e975249a3f 100644
--- a/lisp/calendar/todo-mode.el
+++ b/lisp/calendar/todo-mode.el
@@ -743,6 +743,11 @@ corresponding todo file, displaying the corresponding category."
(setq todo-category-number (todo-category-number cat)))
;; If this is a new todo file, add its first category.
(when (zerop (buffer-size))
+ ;; Don't confuse an erased buffer with a fresh buffer for
+ ;; adding a new todo file -- it might have been erased by
+ ;; mistake or due to a bug (e.g. Bug#20832).
+ (when (buffer-modified-p)
+ (error "Buffer is empty but modified, please report a bug"))
(let (cat-added)
(unwind-protect
(setq todo-category-number