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Lexical analyser
================

This document contains various snippets of information about the lexer
implementation.

First sets
----------

IDENT 		[a-zA-Z] | '-' | '_' | [^#x0-#x7F] | '\'
ATKEYWORD	'@'
STRING		'"' | "'"
INVALID_STRING	'"' | "'"
HASH		'#'
NUMBER		[0-9] | '.'
PERCENTAGE	[0-9] | '.'
DIMENSION	[0-9] | '.'
URI		[Uu]
UNICODE-RANGE	[Uu]
CDO		'<'
CDC		'-'
S	 	#x9 | #xA | #xC | #xD | #x20
COMMENT		'/'
FUNCTION	[a-zA-Z] | '-' | '_' | [^#x0-#x7F] | '\'
INCLUDES	'~'
DASHMATCH	'|'
PREFIXMATCH	'^'
SUFFIXMATCH	'$'
SUBSTRINGMATCH	'*'
CHAR		anything except " or '