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The purpose of the r"([^\\.]\b|^)" is to prevent member vars with the 
same name as a builtin from being colorised. 
 
ie given self.file=file(filename) only the second 'file' should be colorised as 
the first one is NOT shadowing the builtin. 
 
However, you are quite right WRT the quoting bug. 
 
Changeing the r"([^\\.]\b|^)" to r"([^\\.'\"]\b|^)" seems to fix it so that 
	self.file = file("file") 
is colorised correctly.  Ie the first 'file' is in Normal color, the second is in 
Builtins color and the third is in Strings color. 
 
--  
	Nigel