Avoid infinity loop in MatchIterator with zero-width match #31
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In Perl, using a zero-width patten with 'g' will not end up in infinity loop. $ perl -e '$a = '12'; $a =~ s//x/g; print "$a\n"' x1x2x Now MatchIterator follows this behavior, so if the pattern matches zero-width string, the next match will start from the next position.
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Hi, could you take a look? Thanks! |
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Hi, I found an issue with matches() that if the pattern matches an empty string, the next match will start from the same offset, ending up in an infinity loop.
In Perl, using a zero-width pattern with 'g' works as follows.
$ perl -e '$a = "12"; $a =~ s//x/g; print "$a\n"'
x1x2x
With this change, MatchIterator follows this behavior, so if the pattern matches an empty string, the next match will start from the next offset.