GNU bug report logs - #19029
Cut down on useless "really edit the buffer?" prompts

Previous Next

Full log

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Paul Pogonyshev <pogonyshev <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Cut down on useless "really edit the buffer?" prompts
Date: Wed, 12 Nov 2014 15:38:23 +0100

[Message part 1 (text/plain, inline)]

When switching between different branches in a VCS system, file
modification date may change even though its contents isn't. For example,
when switching from trunk to a branch X where the file is modified, then
switching back.

As a result, if the file was opened in Emacs before the switches, and I
attempt to edit it afterwards, Emacs prompts me with "... changed on disk;
really edit the buffer?" even though the only thing that "changed" about it
is the modification time. (To make it worse, Emacs requires _three_
confirmation to edit and save...)

Request: if Emacs detects timestamp change, let it read the file and
compare it with the buffer; if they are byte-to-byte identical, just ignore
the timestamp.

To reproduce: open any existing file, say 'x.txt'. Now type:

    M-! touch x.txt

and try to edit the buffer.

Paul

[Message part 2 (text/html, inline)]

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.