>> In the shell buffer the current prompt has its own face,
>> comint-highlight-prompt. After a command is entered, the new prompt has this
>> face, but the face for the old prompt is relegated to font-lock-string-face.
> You must have a prompt that triggers one of the various font-lock
> patterns, causing font-lock to over-write the correct prompt face.
> Older (before 2002 sometime) versions used overlays instead of
> text-properties for all prompt faces instead of just the last one,
> which were resistant to being overwritten.
> I'm not sure about how to make font-lock not match areas with certain
> properties attached; Stefan?
In the font lock keywords, don't forget that the "face" specification of
each keyword is an expression. So you can just use an expression like (if
(get-text-property (point) 'toto) nil 'the-face).
Stefan
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