[Gnome-print] gdf_find_measured_gdk_font: proposed way to fix severe i18n bug

[Vlad Harchev <hvv hippo ru>]

 Hello, 

 gnome-rfont.c:gdf_find_measured_gdk_font is currently used internally to
find find out the X font that matches the given printer font as close as
possible. It tries to build an XLFD of the font with a lot of "*" in it, and
asks X server (by calling gdk_font_load) to load some font that has such XLFD.
Among other parts of XLFD that are set to '*' is the registry-encoding pair.
This means that X will return font with ANY encoding!! And it really DOES!
E.g. in gnumeric, the text in cells is drawn with the font with random encoding,
text fragments of the same font family, size and weight are drawn using same
font, but when e.g. style or size or weight is changed for some fragment,
it may be redrawn with the font with different encoding (think about russian
text drawn with iso1 font). This of course makes apps that use gnome-print
unusable (user just can't read what they type right now or what they typed
in other cell).

 There is a solution to this problem - just
    sed -e 's/gdk_font_load/gdk_fontset_load/g' gnome-rfont.c 
This really fixes that problem - X i18n machinery will care to return only
fonts with the current locale's encoding. This means fonts with wrong encoding
will never be returned by gdf_find_measured_gdk_font().
 Also it fixes other i18n problems (CJK fonts can be used iff they are loaded
using gdk_fontset_load, they won't work if you use gdk_font_load).

 Could you please make this modification to gnome-rfont.c?

 Best regards,
  -Vlad