I, too, cannot understand what you are trying to accomplish by using the /g regex modifier or, in a broader sense, what your ultimate goal may be. If you could give us a better idea of this goal, we might be better able to help. I suspect this may be an instance of an XY Problem.

One thing strikes me about the 'reverse' regex approach you are using. If $s1 and $s2 are both 'pure' strings with no regex metacharacters (or with any metacharacters escaped), then the expression  $s1 =~ /$s2/ is true if $s2 is a substring of $s1. If this is true and the match is reversed,  $s2 =~ /$s1/ is true if $s2 equals $s1 by string comparison (i.e.,  $s2 eq $s1 is true).

So why not just use index (to find a substring) and eq (see the string Equality Operators) instead of trying to deal with the arcana of the operation of /g across multiple regexes?

In reply to Re: Match a chunk by Anonymous Monk
in thread Match a chunk by dhasaan

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