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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Eli Zaretskii <eliz@gnu.org>
Cc: cyd@stupidchicken.com, 8219@debbugs.gnu.org, emacs-devel@gnu.org
Subject: Re: Effect of deletions on indirect buffers (Bug#8219)
Date: Sat, 12 Mar 2011 15:47:05 -0500	[thread overview]
Message-ID: <jwvipvooyog.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <83wrk4soee.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 12 Mar 2011 11:01:45 +0200")

> It follows that BUF_PT, when used on other than the current buffer
> should update PT if necessary, if that buffer is an indirect buffer,
> before returning the value.  And the same with BUF_BEGV, BUF_ZV, etc.

> Right?

Yes.  At least that was my conclusion last time we bumped into such
a bug.  I even added a comment in buffer.h about it:

/* !!!FIXME:  all the BUF_BEGV/BUF_ZV/BUF_PT macros are flawed:
   on indirect (or base) buffers, that value is only correct if that buffer
   is the current_buffer, or if the buffer's text hasn't been modified (via
   an indirect buffer) since it was last current.  */


        Stefan



  reply	other threads:[~2011-03-12 20:47 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-11 19:48 Effect of deletions on indirect buffers (Bug#8219) Chong Yidong
2011-03-11 20:07 ` Eli Zaretskii
2011-03-11 20:58   ` bug#8219: " Chong Yidong
2011-03-12  8:15     ` Eli Zaretskii
2011-03-11 23:19   ` Stefan Monnier
2011-03-12  9:01     ` Eli Zaretskii
2011-03-12 20:47       ` Stefan Monnier [this message]
2011-03-13 16:30         ` bug#8219: " Chong Yidong
2011-03-13 17:09           ` Chong Yidong
2011-03-13 22:29         ` Chong Yidong
2011-03-14  2:41           ` bug#8219: " Juanma Barranquero
2011-03-14 16:18             ` Chong Yidong

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