GNU bug report logs - #25246
25.1.90; Buffer not responsible with overlay at buffer end.

Previous Next

Full log

View this message in rfc822 format

From: Eli Zaretskii <eliz <at> gnu.org>
To: "Stefan-W. Hahn" <stefan.hahn <at> s-hahn.de>
Cc: 25246 <at> debbugs.gnu.org
Subject: bug#25246: 25.1.90; Buffer not responsible with overlay at buffer end.
Date: Thu, 22 Dec 2016 19:04:37 +0200

> Date: Thu, 22 Dec 2016 10:13:05 +0100
> From: "Stefan-W. Hahn" <stefan.hahn <at> s-hahn.de>
> 
> For showing some information in compile buffer I have a function which
> uses the hooks compilation-start-hook and compilation-filter-hook to
> scan the compile buffer while compiling and adding an overlay together
> with information of the compilation at the end of the compile buffer.
> 
> The compile buffer has
>   truncate-lines t
> 
> And the function to add the overlay is like:
> 
> (defun xx ()
>   (interactive)
>   (let ((text (propertize
>                 (concat
>                 (format "Already done %d test (%d positive, %d negative, %d undecided).\n"
>                         0 0 0 0))
>                'face 'highlight))
>         (ov (make-overlay (point-min) (point-min) nil 'front-advance)))
>     (overlay-put ov 'after-string text)
>     (goto-char (point-max))
>     (move-overlay ov (point-at-bol) (point-at-eol))))
> 
> Together with an content of a buffer like:
> 
> --- snipp
>     xxxx xxxxxx xxxxxx `xxxxxxxx_xxxxx_xxxx.xxx'.
> ./../../xxxxx/xxxxxx xxxxxxxxxxxxx.xxx xxxxxxx.xxx xxxxxxx.xxx xxxxxxxxx.xxx xxxxx.xxx xxxxxxxxxxxx.xxx xxxxxxxxx.xxx xxxxxxxxxx.xxx xxx_xxxx.xxx xxxxxxxxx.xxx xxxxxxxxxx.xxx xxxxxxxxxx.xxxxxxxxxxxxx.xxxxxxxxxxxxx.xxxxxxxxxxxxx.xxxxxxxxxxxx
> --- snipp
> 
> The last line is longer then the screen width, so truncated.
> 
> If running the above defined funtion xx in this buffer (with emacs -Q), the
> buffer is not responsible any more afterwards.
> 
> If truncate-lines is nil, it works.

Could you please show a complete recipe, starting from "emacs -Q"?
I'm afraid I don't understand from your description how to reproduce
the problem, in order to debug it.

It should be enough to provide some text to serve as buffer contents,
and a Lisp function to put the overlay on that text, such that Emacs
stops responding.

Thanks.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.