scroll-down behave strangely with header line

[David PONCE]

Hi all,

Recently, I noticed that scroll-down behaves strangely when there is a
header line displayed.  The scroll bar is correctly updated, the line
number on the mode line too, but the window display doesn't change or
change very slowly.  No problem with scroll-up.

You can try to reproduce it like this:

emacs -Q

C-h i     (To display an info buffer with an header line.)

Visit a relatively long page like the one of the "GNU Free
Documentation License", go to the end of the buffer, then repeat
the <prior> key to scroll down.  Do you observe the same thing?

The only recent change that could be related to that seems this one:

2005-06-25  Richard M. Stallman  <address@hidden>

        * macfns.c (Fx_show_tip): Pass new arg to try_window.

        * w32fns.c (Fx_show_tip): Pass new arg to try_window.

        * xfns.c (Fx_show_tip): Pass new arg to try_window.

        * xdisp.c (try_window): New arg CHECK_MARGINS.  Calls changed.
        (redisplay_window): Handle try_window reporting point in scroll margin.

Sincerely,
David


In GNU Emacs 22.0.50.3 (i686-pc-linux-gnu, GTK+ Version 2.4.14)
 of 2005-06-27 on localhost
X server distributor `The X.Org Foundation', version 11.0.60802000
configured using `configure '--with-gtk'

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t