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Global cntrl

boost::xpressive::cntrl — Matches a control character.

Synopsis

// In header: <boost/xpressive/regex_primitives.hpp>

unspecified cntrl;

Description

The regex traits are used to determine which characters are control characters. To match any character that is not a control character, use ~cntrl.

[Note] Note

cntrl is equivalent to /[[:cntrl:]]/ in perl. ~cntrl is equivalent to /[[:^cntrl:]]/ in perl.


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