lexer: New functions lex_spec_missing(), lex_spec_only_once().
authorBen Pfaff <blp@cs.stanford.edu>
Sat, 5 Nov 2011 23:34:56 +0000 (16:34 -0700)
committerBen Pfaff <blp@cs.stanford.edu>
Sun, 6 Nov 2011 16:19:23 +0000 (08:19 -0800)
These functions don't have many users yet but they make logical
sense to me.


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