.- matches any character\d- matches digits 0-9\D- matches any character but 0-9\s- matches whitespace characters\S- matches any character but whitespace\w- matches A-Z, a-z, 0-9, and _\W- matches any character but A-Z, a-z, 0-9, and _\t- matches a tab character\n- matches a newline character- This can be used in the template to print a newline
[ab]- matches any one character within the brackets[^ab]- matches any character except those in the brackets
a|b- matches the expression on the right or the expression on the left
^- matches the beginning of input- Also matches the beginning of the line when 'Multiline' is checked
$- matches the end of input- Also matches the end of the line before the line break character when 'Multiline' is checked
\b- matches word boundaries\B- matches non-word boundaries
(a)- matches the expression within and remembers the match\n- matches the nth parenthesized expression, where n is a positive integer- This can be used in the template to print the nth parenthesized expression
(?:a)- matches the expression within and doesn't remember the match
a*- matches the expression 0 or more timesa+- matches the expression 1 or more timesa?- matches the expression 0 or 1 timesa{n}- matches the expression n timesa{n,}- matches the expression n or more timesa{n,m}- matches the expression n to m times
For details, examples, and advanced concepts, visit this documentation.
Note: a and b in the examples represent any expression