On 30 Sep 2000 19:50:27 -0000, Perl6 RFC Librarian wrote:
>In Perl6, lookbehind in regular expressions should be extended to permit
>not only fixed-length, but also variable-length lookbehind.
I see no mention of negative lookbehind.
As I wrote before, in:
/(?<!ab*c)x/
The lookbehind should fail if *any* lookbehind string can be found
matching, and not succeed if there's a string to be found that doesn't
match! In the latter case, negative lookbehind would be useless.
--
Bart.
