Reference

sanitize()

Escape characters expected special by regex engines

any()

Match any of these characters exactly once (alias of any_of()).

any_of()

Match any of these characters exactly once.

anything()

Match any character(s) any (including zero) number of times.

anything_but()

Match any character(s) except these any (including zero) number of times.

end_of_line()

Match the expression only if it appears till the end of the line.

find()

Match an expression (alias for then()).

maybe()

Optionally match an expression.

range()

Match any character within the range defined by the parameters.

something()

Match any character(s) at least once.

something_but()

Match any character(s) except these at least once.

start_of_line()

Match the expression only if it appears from beginning of line.

then()

Match an expression

one_or_more()

Match the previous stuff one or more times.

br()

Match a line break (alias of line_break()).

digit()

Match a digit (0–9).

line_break()

Match a line break.

tab()

Match a tab character.

whitespace()

Match a whitespace character.

word()

Match a word.

begin_capture()

Begin a capture group.

end_capture()

End a capture group.

with_any_case()

Control case-insensitive matching.