Display problems with non-ascii characters

[Sascha Wilde]

Hi *,

I'm experiencing some strange display problems with non-ascii characters
for some time -- a saw various threads on the list which seemed to be
related, bus as they still persist I decided to write this report:

Emacs 23 CVS head, --with-x-toolkit=lucid

To reproduce:

; I use the font "terminus" http://www.is-vn.bg/hamster/ included in
; many GNU/Linux Distributions, for example Debian

1. emacs -Q

2. ; Type some German umlauts in *scratch*:
   ÄÖÜßäöü

3. ; evaluate:
   (set-face-font 'default "terminus 12")
   ; everything looks fine, but the umlauts disappeared and when you
   ; move the text cursor above them even the cursor disappears.

4. ; evaluate:
   (set-face-font 'default "terminus 11")
   ; the umlauts reappear.

Additional information:

- As 4. shows the problem seems to be related to some sizes (which used
  to work in Emacs 22).

- When you jump in an buffer in such an way, that the (invisible)
  umlauts would appear at the same position where some other character
  was drawn before, theses other characters stay on the screen.  So it
  seems that on the position of the umlauts no redraw takes place at
  all.

cheers
sascha
-- 
Sascha Wilde  :  "I heard that if you play the Windows CD backward, you
              :  get a satanic message. But that's nothing compared to
              :  when you play it forward: It installs Windows...." 
              :  -- G. R. Gaudreau