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bug#25362: 26.0.50; comment-region goes into an infinite loop
From: |
Alan Mackenzie |
Subject: |
bug#25362: 26.0.50; comment-region goes into an infinite loop |
Date: |
Mon, 9 Jan 2017 22:04:39 +0000 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
Hello, Dima
On Mon, Jan 09, 2017 at 01:46:28PM -0800, Dima Kogan wrote:
> Alan Mackenzie <acm@muc.de> writes:
> > As already observed, this bug happens simply in C Mode by attempting to
> > comment out the four lines inside the function, doing this by marking
> > the lines then C-c C-c.
> > The cause was a rather nasty situation where a "syntactic whitespace
> > cache", designed to facilitate moving rapidly over large areas of WS
> > (particularly long comments at the beginning of files) got screwed up by
> > the insertion of "// " onto a line already containing a "//" later on.
> > Here is a patch. It is not yet in its final form (the comments need
> > fixing). Would you please try it out and let me know how well/how badly
> > it works:
> Hi. I'm now running with this patch, and some cursory testing says that
> it works. I briefly ran into an issue where I
> 1. highlighted a problematic region
> 2. hit M-; (this worked correctly)
> 3. Hit M-/ to undo
> This undo restored the text correctly, but the whole region remained
> highlighted as a comment, even after the undo removed the comment
> characters. I hit this once, but cannot reproduce it anymore. If this
> description means something to you, feel free to act on it :)
I'll have a think about this some time (it's late at night in Europe,
now).
> > Thanks for this rather obscure bug report. :-)
> Heh. I just report issues that pop up during the course of the day. We
> owe you hugely for responding to these bugs and maintaining cc-mode.
> Thanks!
That's appreciated!
--
Alan Mackenzie (Nuremberg, Germany).
- bug#25362: 26.0.50; comment-region goes into an infinite loop, (continued)
- bug#25362: 26.0.50; comment-region goes into an infinite loop, Eli Zaretskii, 2017/01/06
- bug#25362: 26.0.50; comment-region goes into an infinite loop, Alan Mackenzie, 2017/01/06
- bug#25362: 26.0.50; comment-region goes into an infinite loop, Eli Zaretskii, 2017/01/06
- bug#25362: 26.0.50; comment-region goes into an infinite loop, Alan Mackenzie, 2017/01/06
- bug#25362: 26.0.50; comment-region goes into an infinite loop, Alan Mackenzie, 2017/01/07
- bug#25362: 26.0.50; comment-region goes into an infinite loop, Eli Zaretskii, 2017/01/07
- bug#25362: 26.0.50; comment-region goes into an infinite loop, Alan Mackenzie, 2017/01/07
- Message not available
- bug#25362: 26.0.50; comment-region goes into an infinite loop, Eli Zaretskii, 2017/01/07
bug#25362: 26.0.50; comment-region goes into an infinite loop, Alan Mackenzie, 2017/01/09