Dear Monks,

I have (what I thought was) a really simple RegExp working under Perl 5.8.8 but it breaks when tested under 5.10.0. It is part of Lingua::Stem::Es and it is guilty of a lot of the failures reported for the current version in CPAN.

The ofending code is:

if ( ($suffix) = $R2 =~ /(uciones|ución)$/ ) {

        # ución uciones
        # replace with u if in R2
        $word =~ s/$suffix$/u/;
        print "Step 1 case 4: $word\n" if $DEBUG;
}

[download]

I expect it to match when $R2 ends in either "uciones" or "ución", but it fails to match when $R2='ución'. There are 15 such failures in the test suite, related to these words:

and other ten words all ending in "ución".

When $R2 contains "uciones" the RegExp works OK; there are 10 such examples in the test suite.

I would appreciate it if someone could offer some insight into why this is happening. If you'd like to try the module, there is an undocumented $DEBUG global var that, if set, will display the different steps where the word is being stemmed.

(The other reason why some tests failed is because I forgot to declare Test::Exception as a requirement).

Thanks in advance,

Julio

In reply to RegExp breaks in Perl 5.10 by jfraire

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