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Metacharacters

To really make use of regular expressions, you must be familiar with metacharacters and their meanings within the regular expression language. They exist to perform specialized functions in relation to your search criteria. This does not mean that the use of these characters is only for those specialized functions; but if you actually want to search for a character that the regular expression will recognize as a metacharacter, you must escape it. You’re already familiar with escaping characters within ColdFusion Markup Language (CFML) code because we often must escape the # character.

Here are the metacharacters with which you’ll need to familiarize yourself:


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