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Re: [T. V. Raman] read-only modes should be using buffer-disable-undo?
From: |
T. V. Raman |
Subject: |
Re: [T. V. Raman] read-only modes should be using buffer-disable-undo? |
Date: |
Sat, 22 Jan 2005 07:40:21 -0800 |
most of what you say is valid; incidentally I do use wdired in dired
mode for renaming files en-masse. However, the original point still
remains; modes like Man-mode etc should not be enabling undo -- at
least while they are are madlly running around the buffer doing search
and replace tasks to format the content. Let's focus on that ---
rather than get caught up in "is undo useful" -- there is no argument
there, undo is useful.>>>>> "Luc" == Luc Teirlinck <address@hidden> writes:
Luc> T. V. Raman wrote: I wasn't refering to the optimization with
Luc> respect to grouping small chunks of output; rather, I was
Luc> indicating that perhaps we could avoid having undo
Luc> information altogether in read-only modes like man-mode.
Luc> On the one hand, there probably are many read-only modes that
Luc> only enable undo because it is enabled by default and the
Luc> author just forgot to disable it. Clearly, we should fix
Luc> those if we find them. On the other hand, undo is not
Luc> necessarily useless in read-only buffers, because they can be
Luc> made writable with C-x C-q. Dired even provides
Luc> functionality to use the undo info without having to do C-x
Luc> C-q.
Luc> For instance is undo info in the Buffer Menu useless? That
Luc> is not obvious. It certainly is not as useful as in writable
Luc> buffers. But suppose for instance that you delete a buffer
Luc> in the Buffer Menu with `d' and `x'. You then realize that
Luc> you probably inadvertently deleted the wrong buffer. You can
Luc> do C-x C-q and then undo. This will not bring the buffer
Luc> back automatically, but you can see which buffer you deleted.
Luc> You can then do `g' to update the Buffer Menu again. The
Luc> entire procedure even works if you auto revert the Buffer
Luc> Menu (in the CVS version), because deleting a buffer with d
Luc> and x marks the buffer modified, protecting it from further
Luc> reverts until the user reverts it by hand.
Luc> Sincerely,
Luc> Luc.
--
Best Regards,
--raman
Email: address@hidden
WWW: http://emacspeak.sf.net/raman/
AIM: TVRaman
PGP: http://emacspeak.sf.net/raman/raman-almaden.asc
- [T. V. Raman] read-only modes should be using buffer-disable-undo?, Dave Love, 2005/01/04
- Re: [T. V. Raman] read-only modes should be using buffer-disable-undo?, Richard Stallman, 2005/01/05
- Re: [T. V. Raman] read-only modes should be using buffer-disable-undo?, T. V. Raman, 2005/01/22
- Re: [T. V. Raman] read-only modes should be using buffer-disable-undo?, Richard Stallman, 2005/01/22
- Re: [T. V. Raman] read-only modes should be using buffer-disable-undo?, T. V. Raman, 2005/01/22
- Undo discard prompt (was: [T. V. Raman] read-only modes should be using buffer-disable-undo?), Stefan Monnier, 2005/01/23
- Re: Undo discard prompt (was: [T. V. Raman] read-only modes should be using buffer-disable-undo?), Luc Teirlinck, 2005/01/23
- Re: Undo discard prompt (was: [T. V. Raman] read-only modes should be using buffer-disable-undo?), T. V. Raman, 2005/01/23
- Re: Undo discard prompt (was: [T. V. Raman] read-only modes should be using buffer-disable-undo?), Luc Teirlinck, 2005/01/23
- Re: Undo discard prompt (was: [T. V. Raman] read-only modes should be using buffer-disable-undo?), T. V. Raman, 2005/01/23
- Re: Undo discard prompt (was: [T. V. Raman] read-only modes should be using buffer-disable-undo?), Luc Teirlinck, 2005/01/23
- Re: Undo discard prompt (was: [T. V. Raman] read-only modes should be using buffer-disable-undo?), T. V. Raman, 2005/01/23
- Re: Undo discard prompt (was: [T. V. Raman] read-only modes should be using buffer-disable-undo?), Miles Bader, 2005/01/23