Documentation

Test:

[code with square \ brackets]

lorem ipsum

[..]

Matches any of the enclosed characters. Ranges of characters can be specified by separating the endpoints with a '-'. '-' or ']' can be matched by including them as the first character(s) in the list. Never matches path separators: [/] matches nothing at all. Named character classes can also be matched: [:x:] within [] specifies the class named x, which matches certain predefined characters. See below for a full list.

[^..] or [!..]

Like [..], but matches any character not listed. Note that [^-x] is not the inverse of [-x], but the range [^-x].

<m-n>

Matches any integer in the range m to n, inclusive. The range may be open-ended by leaving out either number: "<->", for instance, matches any integer.

**/

Matches any number of characters, including path separators, excluding the empty string.

Supported character classes:

[:alnum:]

Equivalent to "0-9A-Za-z".

[:alpha:]

Equivalent to "A-Za-z".

[:blank:]

Equivalent to "\t ".

[:cntrl:]

Equivalent to "\0-\x1f\x7f".

[:digit:]

Equivalent to "0-9".

[:graph:]

Equivalent to "!-~".

[:lower:]

Equivalent to "a-z".

[:print:]

Equivalent to " -~".

[:punct:]

Equivalent to "!-/:-@[-`{-~".

[:space:]

Equivalent to "\t-\r ".

[:upper:]

Equivalent to "A-Z".

[:xdigit:]

Equivalent to "0-9A-Fa-f".