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Matching Patterns in Text: Character literals


The very simplest pattern matched by a regular expression is a literal character or a sequence of literal characters. Anything in the target text that consists of exactly those characters in exactly the order listed will match. A lower case character is not identical with its upper case version, and vice versa. A space in a regular expression, by the way, matches a literal space in the target (this is unlike most programming languages or command-line tools, where spaces separate keywords).


asked Sep 13, 2013 in Regular-exp by rajesh
edited Sep 12, 2013
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