| Subject: | argument passing into rule fails when <ws> is declared globally but not redefined in rule |
| Date: | Fri, 1 May 2015 11:09:02 -0400 |
| To: | bug-Regexp-Grammars [...] rt.cpan.org |
| From: | "Alex C. Reed, IV" <acreed4 [...] gmail.com> |
When <token:ws> is defined in a grammar and a rule passes an argument to a
sub-rule, the sub-rule does not see said argument if <ws:> is not
re-declared inside the rule.
See attached example 'undef_arg_example.pl' and comment/uncomment lines
21-22 (<ws:> override of rule 'assign_stmt'). An output of both good and
bad versions (i.e. with and without local <ws:> declared, respectively),
along with a dump of the compiled grammar is available in good.txt and
bad.txt for easy diff'ing.
$ /bin/perl -v
This is perl 5, version 14, subversion 1 (v5.14.1) built for
x86_64-linux-thread-multi
<snip>
$ /bin/env perl -MRegexp::Grammars -e 'print $Regexp::Grammars::VERSION'
1.040
$ uname -a
Linux <scrubbed> 2.6.32-358.23.2.el6.x86_64 #1 SMP Sat Sep 14 05:32:37 EDT
2013 x86_64 x86_64 x86_64 GNU/Linux
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