Create a regex from components.
Creates a regex from regex components.
Character vectors of regex components.
A list of character vectors for alternate specification.
Regex for separating components of complete regex. Defaults to "an optional space or hyphen".
A string containing a regex.
Each element in the vectors are pasted together, separated by the
sep value. Those character vectors are then preceded by "^"
(regex for 'start of string'() and followed by "$" (regex for end
of string). Finally, the regexes are collapsed with "|" (regex for
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