Subj : Regexp Bug?
To   : netscape.public.mozilla.jseng
From : gavin
Date : Fri Feb 18 2005 01:03 pm

I might be wrong about this, but I think this is a bug in the regexp
matcher:

Given:
var theCode = "foo.bar.x = jim.jam * 15 - whee";
var theIDMatch = /(?!\.)\b[a-z_]\w*\b/g;
var theIDs = theCode.match( theIDMatch );

I get theIDs as:
[foo,bar,x,jim,jam,whee]

Shouldn't the negative lookahead for the period prevent 'bar', 'x' and
'jam' from appearing the results? Or am I a fool who has misunderstood
how negative lookaheads should work with word boundaries?

.