unofficial mirror of emacs-devel@gnu.org 
 help / color / mirror / code / Atom feed
From: Geoff Gole <geoffgole@gmail.com>
To: emacs-devel@gnu.org
Subject: (require 'cus-load) clobbers match-data
Date: Sun, 14 Feb 2010 13:13:15 +0800	[thread overview]
Message-ID: <f5bc73231002132113l3ea89c4dx8f3ad340272662c1@mail.gmail.com> (raw)

While trying to puzzle out bug 5533
<http://debbugs.gnu.org/cgi/bugreport.cgi?bug=5533>, I've found that
(require 'cus-load) will stomp on match data if the file is not
already loaded:

  emacs -Q
  (let ((md (match-data)))
    (require 'cus-load)
    (equal md (match-data)))
  => t

This is what causes the bug, but I can't figure out why it is
happening. cus-load.el is just a big list of (put ...) forms. Why is
it stomping on the match data?

Anyway, if anybody knows how to stop it doing that, that would fix bug
5533. Maybe require should save and restore the match data itself?




             reply	other threads:[~2010-02-14  5:13 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-14  5:13 Geoff Gole [this message]
2010-02-14  7:01 ` (require 'cus-load) clobbers match-data David Kastrup
2010-02-14  7:49   ` Geoff Gole
2010-02-14  8:00     ` David Kastrup
2010-02-14  8:33       ` Geoff Gole
2010-02-16 20:13 ` Glenn Morris
2010-02-16 20:25   ` Davis Herring
2010-02-16 21:11     ` Andreas Schwab

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

  List information: https://www.gnu.org/software/emacs/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=f5bc73231002132113l3ea89c4dx8f3ad340272662c1@mail.gmail.com \
    --to=geoffgole@gmail.com \
    --cc=emacs-devel@gnu.org \
    /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 public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).