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From: Alan Mackenzie <acm@muc.de>
To: Herbert Euler <herberteuler@hotmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: C++ mode and c-beginning-of-current-token
Date: 12 May 2007 20:49:53 +0200	[thread overview]
Message-ID: <20070512201204.GA1978@muc.de> (raw)
In-Reply-To: <BAY143-F1081814BBBFFDD91659709DA380@phx.gbl>

Hi, Guanpeng!

On Sat, May 12, 2007 at 11:30:07PM +0800, Herbert Euler wrote:
> I found some additional strange behaviors.  First, the error in a
> buffer would only be signaled once.  If an error is already signaled,
> typing again does not cause another same error get signaled, but
> font-lock is broken after that.

Font locking is done in an after-change hook.  If a function in the
after-change-hook throws an error, Emacs deletes that function from the
hook, allowing Emacs to continue broken rather than hang up on continual
errors.  I think that is what is happening to you here.  You can check
this by examining after-change-functions before and after the error.

I think this explains all the anomalies you were seeing.

> Hope the above information helps.  Thanks.

I'm going to have to think a bit about the main bug you reported.
Hopefully, I'll get back to you tomorrow about it.  Sleep well!

> Regards,
> Guanpeng Xu

-- 
Alan Mackenzie (Ittersbach, Germany).

  reply	other threads:[~2007-05-12 18:49 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-12 10:39 C++ mode and c-beginning-of-current-token Herbert Euler
2007-05-12 13:19 ` Alan Mackenzie
2007-05-12 14:30   ` Herbert Euler
2007-05-12 14:33   ` Herbert Euler
2007-05-12 16:02   ` Herbert Euler
2007-05-12 15:30 ` Herbert Euler
2007-05-12 18:49   ` Alan Mackenzie [this message]
2007-05-13  0:51     ` Herbert Euler
2007-05-13 10:01 ` Alan Mackenzie
2007-05-14  2:00   ` Herbert Euler
2007-05-14  8:50     ` Alan Mackenzie
2007-05-14  9:24       ` Herbert Euler
2007-05-14 16:58 ` Stefan Monnier
2007-05-15  3:45   ` Herbert Euler
2007-05-15  6:39     ` martin rudalics
2007-05-16 16:15     ` Stefan Monnier
2007-05-15 13:30   ` Herbert Euler
2007-05-16  8:01     ` Herbert Euler
2007-05-16  8:05       ` Herbert Euler
2007-05-17  2:12         ` Kenichi Handa
2007-05-17 10:18           ` martin rudalics
2007-05-17 12:52             ` Herbert Euler
2007-05-17 13:51               ` martin rudalics
2007-05-17 21:40                 ` martin rudalics
2007-05-17 14:32               ` Stefan Monnier
2007-05-17 14:45                 ` martin rudalics
2007-05-18 13:00                 ` Richard Stallman
2007-05-18 23:39                   ` Herbert Euler
2007-05-19 22:31                     ` Richard Stallman
2007-05-19 12:59                   ` martin rudalics
2007-05-19 15:18                     ` Stefan Monnier
2007-05-19 17:48                       ` martin rudalics
2007-05-21 13:01                       ` Kenichi Handa
2007-05-21 14:00                         ` Stefan Monnier
2007-05-22  1:37                           ` Kenichi Handa
2007-05-22 10:26                             ` Stefan Monnier
2007-05-22 12:08                               ` Kenichi Handa
2007-05-20  6:50                     ` Richard Stallman
2007-05-16  9:00       ` martin rudalics
2007-05-16 11:12         ` Herbert Euler
2007-05-16 12:21           ` martin rudalics

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