Bug #58128 for ParseLex: regular expression parsing is broken for some special characters

Fri Jun 04 10:21:29 2010 jettero [...] cpan.org - Ticket created

Subject:

regular expression parsing is broken for some special characters

my $x = Parse::Lex->new(VALUE=>'blarg(?<!blarg)'); $x->from("blarg"); (This works in perl5.8, but crashes in perl5.10.) I wish the new() method would accept pre-compiled regular expressions that would be considered "working" before whatever internal processing escapes the bang. I tried source diving to find the offending escaping issue, but I find the internals rather difficult to follow. -- If riding in an airplane is flying, then riding in a boat is swimming. 114 jumps, 47.2 minutes of freefall, 90.4 freefall miles.

Fri Jun 04 11:55:24 2010 jettero [...] cpan.org - Correspondence added

On Fri Jun 04 10:21:29 2010, JETTERO wrote: Show quoted text

> I tried source diving to find the offending escaping > issue, but I find the internals rather difficult to follow.

Found it, finally: Parse::Template::ppregexp is apparently *INTENTIONALLY* ruining my regexp. I wish it wouldn't. Is there any solution for this? Show quoted text

> # Purpose: validate the regexp and replace "!" by "\!", and "/" by "\/" > # if not already escaped > # Arguments: a regexp > # Returns: the preprocessed regexp > sub ppregexp {

-- If riding in an airplane is flying, then riding in a boat is swimming. 114 jumps, 47.2 minutes of freefall, 90.4 freefall miles.

Fri Jun 04 11:55:25 2010 jettero [...] cpan.org - Status changed from 'new' to 'open'

Fri Aug 13 13:48:45 2010 PSCUST [...] cpan.org - Taken

Fri Aug 13 13:51:45 2010 PSCUST [...] cpan.org - Correspondence added

Solved in Parse::Template 3.04 Parse::Lex 2.20 requires Parse::Template 3.04 Solution was to revert the escape of the ! if it is part of (?!...) or (? Show quoted text

>!...)

Fri Aug 13 13:51:46 2010 PSCUST [...] cpan.org - Status changed from 'open' to 'resolved'