From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Barry OReilly <gundaetiapo@gmail.com>
Cc: 16411@debbugs.gnu.org
Subject: bug#16411: undo-only bugs
Date: Mon, 13 Jan 2014 19:49:39 -0500 [thread overview]
Message-ID: <jwvmwizqttu.fsf-monnier+emacsbugs@gnu.org> (raw)
In-Reply-To: <CAFM41H3Li=sKXQ6pjdyk5E+rivUeOq5TF3aJ624Cdr=2ppMBtg@mail.gmail.com> (Barry OReilly's message of "Sat, 11 Jan 2014 00:09:26 -0500")
>> I guess I do have some idea how to do it, but it looks like a lot of
>> work, since we have to adjust the positions in the rest of
>> pending-undo-list.
> Are you saying the buffer positions in the undo data become
> invalidated? That could indeed be a detail I missed. Let me take a
> closer look.
Not exactly invalidated, but we can't just skip an undo-record without
adjusting the subsequent records.
We can skip a bunch of undo-record specified via undo-equiv-table
because that table stores pairs of undo states that correspond
to the exact same buffer, so the "adjustment" is a no-op.
>> Right: the loop that undoes N steps (either in undo-more or in undo
>> if we change undo to only call undo-more with a 1) needs not only to
>> use undo-equiv-table at each iteration to skip redo entries, but it
>> also needs to add an entry in undo-equiv-table at each iteration.
> And recall that these N are rolled into one redo record.
Not sure what you mean here.
> So a redo record needs to reference N records it undid.
I'm even more confused.
> Actually, this makes me realize the solution to bug 1 is inadequate.
> Calling (undo-primitive 1) N times creates N redo records whereas
> (undo-primitive N) creates one.
No, primitive-undo does not add any undo boundary.
Stefan
next prev parent reply other threads:[~2014-01-14 0:49 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-10 22:33 bug#16411: undo-only bugs Barry OReilly
2014-01-10 23:54 ` Stefan Monnier
2014-01-11 3:48 ` Barry OReilly
2014-01-11 4:29 ` Stefan Monnier
2014-01-11 5:09 ` Barry OReilly
2014-01-14 0:49 ` Stefan Monnier [this message]
2014-01-14 1:52 ` Stefan Monnier
2014-01-14 14:00 ` Barry OReilly
2014-01-19 0:58 ` Barry OReilly
2014-01-19 3:18 ` Stefan Monnier
2014-01-19 16:57 ` Barry OReilly
2014-02-14 18:51 ` Barry OReilly
2014-02-14 22:29 ` Barry OReilly
2014-02-18 17:40 ` Barry OReilly
2014-02-26 15:20 ` bug#16411: undo in region corrupts existing text Barry OReilly
2014-02-27 5:02 ` Stefan Monnier
2014-05-13 15:01 ` bug#16411: undo-only bugs Barry OReilly
2014-05-14 18:06 ` Stefan Monnier
2014-05-14 18:45 ` Stefan Monnier
2014-05-14 19:55 ` Stefan Monnier
2014-05-14 21:56 ` Barry OReilly
2014-05-15 2:23 ` Stefan Monnier
2014-05-15 3:51 ` Barry OReilly
2014-05-15 13:00 ` Stefan Monnier
2014-05-28 18:42 ` Barry OReilly
2014-06-19 21:35 ` Stefan Monnier
2014-05-14 13:32 ` Barry OReilly
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=jwvmwizqttu.fsf-monnier+emacsbugs@gnu.org \
--to=monnier@iro.umontreal.ca \
--cc=16411@debbugs.gnu.org \
--cc=gundaetiapo@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/emacs.git
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.