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From: Florian Weimer <fw@deneb.enyo.de>
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Subject: Semantic highlighting
Date: Sat, 30 May 2009 21:44:47 +0200
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Are there any comparatively simple examples of semantic (as opposed to
syntactic) highlighting?  Things like "this is a local variable
reference", or "this is a global variable reference".

Has anyone tried to off-load parsing for highlighting to a subprocess,
so that the parser doesn't have to be written in Emacs Lisp?