Some fine tuning in regex grammar.

1 files changed, 12 insertions, 0 deletions

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+2010-01-06  Kaz Kylheku  <kkylheku@gmail.com>
+
+	Some fine tuning in regex grammar.
+
+	* parser.y (regex): Empty regex handled by
+	allowing regex to generate empty, rather than
+	a special case production for '/' '/'. Thus
+	empty subexpressions are possible.
+	(regbranch, regterm): Complement is handled
+	in regbranch, so that it has lower precedence
+	than aggregation.
+
 2010-01-05  Kaz Kylheku  <kkylheku@gmail.com>
 
 	Implemented the regular expression ~ and & operators.