[racket-dev] How to represent the startline in Lexer SRE Operators ??

From: jenny sun (jenny.sun.jenny.sun at gmail.com)
Date: Thu Jan 27 13:45:32 EST 2011

Hi, does anybody know how to represent the startline with whitespace,
in lex, we can write, means that I only match the spaces from the start
^[ ]*

But, there is no ^ operator in Lexer SRE Operators ???

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