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Re: need force-header-line-update
Katsumi Yamaoka <email@example.com> writes:
>>> I am troubled with the header-line which is not redisplayed.
>> Doesn't force-mode-line-update update the header line as well?
> Unfortunately, it doesn't. I'm using the latest Emacs CVS under
> Solaris 2.6 and Red Hat Linux 9.
>> The Lisp manual says:
>> - Function: force-mode-line-update
>> Force redisplay of the current buffer's mode line and header line.
>> The next redisplay will update the mode line and header line based
>> on the latest values of all relevant variables.
>> This function also forces recomputation of the menu bar menus and
>> the frame title.
> Yes, it has surely been written so. However, the test code I've
> sent in the last mail doesn't show an ascii spinner spinning in
> the header-line.
I tried your code and I see the problem as well. I just updated and
committed the docstring of force-mode-line-update by using Richard's
description in the Lisp manual. This is a bit premature, however, as
force-mode-line-update does not seem update the header line. I think
it should. Maybe a redisplay hacker can look into this? On my Emacs
(i686-pc-linux-gnu, GTK+ Version 2.0.6), the problem can be reproduced
by evaluating this:
(setq header-line-format "text")
to set up a a header line. After this, evaluating this:
(setq header-line-format "new text")
does not display the new text.