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bug#45944: 28.0.50; Mailabbrev sometimes hangs
From: |
Katsumi Yamaoka |
Subject: |
bug#45944: 28.0.50; Mailabbrev sometimes hangs |
Date: |
Tue, 19 Jan 2021 08:39:00 +0900 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (x86_64-pc-cygwin) |
On Mon, 18 Jan 2021 09:10:31 +0900, Katsumi Yamaoka wrote:
> When expanding a mail abbrev in the message header of a message-
> mode buffer, it sometime hangs like it goes into an infinite loop.
[...]
> Though I haven't found out the cause of the problem so far,...
I found it. `(forward-word 1)' in the `abbrev--before-point'
function takes a very long time for a certain mail body contents
(`hang' I wrote first was my misregarding).
Here is a recipe to reproduce the problem in `emacs -Q':
1. Create the ~/.mailrc file, if it is absent.
The file needs to contain at least a line like this:
--8<---------------cut here---------------start------------->8---
foo foo@example.com.invalid
--8<---------------cut here---------------end--------------->8---
2. Eval this form in the *scratch* buffer.
--8<---------------cut here---------------start------------->8---
(with-current-buffer (get-buffer-create "*testing*")
(erase-buffer)
(insert "To: \n--text follows this line--\n\
________________________________________________________________\n")
(message-mode)
(mail-abbrevs-setup)
(goto-char (point-min))
(end-of-line)
(pop-to-buffer (current-buffer)))
--8<---------------cut here---------------end--------------->8---
3. In To: header, enter "foo" or something another and type ",".
As far as I can observe, the more "____" line is long, the more
it takes a long time.
Thanks.