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GNU Emacs Lisp Reference Manual

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34.2 Regular Expressions

A regular expression (regexp, for short) is a pattern that denotes a (possibly infinite) set of strings. Searching for matches for a regexp is a very powerful operation. This section explains how to write regexps; the following section says how to search for them.

34.2.1 Syntax of Regular Expressions  Rules for writing regular expressions.
34.2.3 Regular Expression Functions  Functions for operating on regular expressions.
34.2.2 Complex Regexp Example  Illustrates regular expression syntax.

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