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bug#30367: 26.0.91; CC-Mode: Major slowdown when isearching big C++ file
From: |
Alan Mackenzie |
Subject: |
bug#30367: 26.0.91; CC-Mode: Major slowdown when isearching big C++ file. |
Date: |
Tue, 20 Mar 2018 18:49:47 +0000 |
User-agent: |
Mutt/1.7.2 (2016-11-26) |
Hello, Bastian.
On Fri, Feb 09, 2018 at 10:16:53 +0100, Bastian Beischer wrote:
> Hello Alan,
> Alan Mackenzie <acm@muc.de> writes:
[ .... ]
> > Would you please try out the following patch on real code, and either
> > confirm to me that it fixes the bug, or tell me what it breaks. Thanks!
> > diff -r e8b2c6141f97 cc-engine.el
> > --- a/cc-engine.el Fri Feb 02 20:34:15 2018 +0000
> > +++ b/cc-engine.el Thu Feb 08 18:39:40 2018 +0000
> > @@ -10547,13 +10547,6 @@
> > (looking-at c-return-key))
> > (setq braceassignp t)
> > nil)
> > - ((and c-has-compound-literals
> > - (eq (char-after) ?,))
> > - (save-excursion
> > - (when (and (c-go-up-list-backward nil lim)
> > - (eq (char-after) ?\())
> > - (setq braceassignp t)
> > - nil)))
> > ((eq (char-after) ?=)
> > ;; We've seen a =, but must check earlier tokens so
> > ;; that it isn't something that should be ignored.
> > [ .... ]
> Yes, this patch fixes the slowdown. But since I don't understand what
> the original commit which introduced the slowdown tried to fix I cannot
> comment on whether or not its the right thing to do within the context
> of that commit.
Thanks for the prompt, positive reply. I'm afraid I can't remember
either, what the original patch was for.
> I will run emacs with the patch included for a while and will let you
> know in case I find any problems!
Nothing heard from you in the meantime. Good!
> Thanks for tackling this so quickly!
Sorry I've not maintained this speed in committing it. I have now
committed the fix, in revision 16559146f9db1b36d5e8b6c92edb5bb36fafdb85,
and I'm closing the bug.
> >> > Cheers
> >> > Bastian
--
Alan Mackenzie (Nuremberg, Germany).
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