Used together, as /ms, they let the "." match any character whatsoever, Whatsoever, even a newline, which normally it would not match. That is, change "." to match any character Matching the start and end of each line within the string. The start of the string's first line and the end of its last line to That is, change "^" and "$" from matching Gory details of parsing quoted constructs in perlop. Is used by Perl are detailed in Regexp Quote-Like Operators in perlop and Modifiers that alter the way a regular expression That relate to the interpretation of the regular expression insideĪre listed below. Matching operations can have various modifiers. In Regexp Quote-Like Operators in perlop.
Operations, plus various examples of the same, see discussions of
Introduction is available in perlrequick, and a longer tutorialįor reference on how regular expressions are used in matching If you haven't used regular expressions before, a quick-start This page describes the syntax of regular expressions in Perl. Perlre - Perl regular expressions DESCRIPTION Repeated Patterns Matching a Zero-length Substring.
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