Read perlre and then compare /./ against /.?/. The question marks make the dot optional.

Most likely, you want something like the following:

/^....p.$/

[download]

Note the anchors ^ and $ (or alternatively, \A and \z). I've also removed the /i modifier, because you seem want to match a lower-case p only.

In reply to Re: Perl RegEx doubt by Corion
in thread Perl RegEx doubt by swissknife

Title:
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