weird font-lock / coding interaction

[Sven Utcke]

Hi,

I like to use 10x20 as my font in Emacs, and never had any problem so
far.  However, here at my new employee I see weird interactions
between font-lock and what might be a coding issue.  If, e.g., I use
"\bf" in a LaTeX-mode file (deprecated, I know :-) I instead see what
looks roughtly like "¥bf" (it's actually a differently looking
Yen-symbol, presumably from a different font).

Any idea what could be the reason and how to debug this?  I never
before had any problem like this!

This is

GNU Emacs 21.3.1 (i386-redhat-linux-gnu, X toolkit, Xaw3d scroll bars) of 
2006-08-11 on yort.fnal.gov

with 

hasgksssven>/.../utcke% echo $LANG 
en_US

Any help appreciated

Sven
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