Re: narrow-to-defun and mark-defun now work properly for CC Mode.

[Alan Mackenzie <acm@muc.de>]

'Evening, Chong!

On Wed, Apr 11, 2007 at 01:53:30PM -0400, Chong Yidong wrote:
> Chong Yidong <cyd@stupidchicken.com> writes:

> > martin rudalics <rudalics@gmx.at> writes:

> >>>  > Please complain to me about any problems.

> >>> Well, with that invitation!

> >>> Fontifying C files takes too long now, so my old machine starts to
> >>> hang if I step through a buffer or search for a string.  xbacktrace
> >>> seems to consistently include:

> > The problem is due to the recent change:

> > 2007-04-09  Alan Mackenzie  <acm@muc.de>

> One way to see this is to open xdisp.c, and do C-s method.  The
> incremental search takes several seconds.  Previously, it was
> instantaneous.

> Another data point: 

> - Open xdisp.c
> - M->

> On my Pentium IV, M-> takes 30 seconds to complete.

I have a 1.2 GHz Athlon, and for me these operations are instantaneous
enough.  I start Emacs with -Q.  With C-s method, I don't see any delay
at all, and M-> takes well under half a second.  I have checked (by doing
C-x n d) that I have my own latest changes in my Emacs.

Chong, please confirm you're starting your Emacs with -Q.  Would you
please check that C-x n d (`narrow-to-defun') does include functions'
headers.  One other possibility is that the recipe I gave for rebuilding
the CC Mode files.elc was erroneous (or you made an error following it),
and, somehow, one or more of the macros didn't get properly compiled.

I last updated my Emacs a week ago.  I'm going to update it again in the
next few minutes, to see if some other change in the last few days is
interacting badly with my changes.

I would like very much (and that is an understatement) to diagnose this
problem.  It would be very nice to achieve this in hours rather than
days, and I'll do all I can to help here.

-- 
Alan.