1.xx meta.keywords="regular expression null subexpression tests"
2.MT 4
3.TL
4regular expression null subexpression tests
5.AF "AT&T Research - Florham Park NJ"
6.AU "Glenn Fowler <gsf@research.att.com>"
7.H 1
8The
9.B regex
10tests in
11.xx link=nullsubexpr.dat
12exercise
13.B regex
14null subexpression matching.
15