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Re: vc commit clears undo history
From: |
David Kastrup |
Subject: |
Re: vc commit clears undo history |
Date: |
Mon, 03 Dec 2007 21:26:32 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.50 (gnu/linux) |
"Sam Steingold" <address@hidden> writes:
> GNU Emacs 23.0.50.29 (x86_64-unknown-linux-gnu, GTK+ Version 2.8.20)
> of 2007-12-03 on nyc-qws-005
> '-with-gtk' '-with-gif=no'
>
> a long-standing bug (bad feature?) is that when a file is committed
> using vc (C-x v v) or pcvs (c in *cvs* buffer), it buffer's undo history
> is discarder.
I think the rationale for that might be that in order to have the files
identifiable as unmodified, some version control systems might do a
recheckout on them, and replace strings like $Id: whatever$ with
different information. In any case, a revert-buffer is done on the file
after checking it in, I believe.
It might not be easy to get consistent undo information in this case.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum