Subject: Re: bug#12463: 24.2; pos-visible-in-window-p gets slower over time

From: Chong Yidong <[email-masked]>
Date: Tue, 18 Sep 2012 23:17:53 +0800

Eli Zaretskii <[email-masked]> writes:

> Can anyone else reproduce this?

I can reproduce this.  On bisecting, the problem first shows up with

  revno: 104186
  fixes bug: http://debbugs.gnu.org/8640
  committer: Juanma Barranquero <[email-masked]>
  branch nick: trunk
  timestamp: Tue 2011-05-10 12:31:33 +0200
  message:
  src/image.c (Finit_image_library): Return t for built-in image types.

A quick glance at the diff of this revision does not reveal immediately
why it causes the problem, though.