Use of POSIX character classes (see perlre, perlrecharclass) and /x can make regexes easier on the eye:
    my $re = qr{ \A [[:alnum:]] (?: [[:alnum:]_.-]* [[:alnum:]])? \z }xms;
is equivalent.

Give a man a fish:  <%-{-{-{-<

In reply to Re^2: Regex to detect file name by AnomalousMonk
in thread Regex to detect file name by lirc201

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