33.15. The Wildcard Module
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33.15. The Wildcard Module

33.15.1. Wildcard Syntax

Wildcards, also called “Pathname Matching Notation”, describe sets of file names.

When this module is present, *FEATURES* contains the symbol :WILDCARD.

The “WILDCARD” package exports the following two symbols:

(WILDCARD:MATCH pattern string &KEY :START :END :case-insensitive). This function returns a non-NIL value if the string matches the pattern.

(WILDCARD:WILDCARD-MATCHER pattern). This function is a valid value for CUSTOM:*APROPOS-MATCHER*.

33.15.1. Wildcard Syntax

*
Matches any zero or more characters.
?
Matches any one character.
[string]
Matches exactly one character that is a member of the STRING string. This is called a “character class”. As a shorthand, string may contain ranges, which consist of two characters with a dash between them. For example, the class [a-z0-9_] matches a lowercase letter, a number, or an underscore. You can negate a class by placing a #\! or #\^ immediately after the opening bracket. Thus, [^A-Z@] matches any character except an uppercase letter or an at sign.
\
Removes the special meaning of the character that follows it. This works even in character classes.

Note

Slash characters have no special significance in the wildcard matching, unlike in the shell (/bin/sh), in which wildcards do not match them. Therefore, a pattern foo*bar can match a file name foo3/bar, and a pattern ./sr*sc can match a file name ./src/misc.

These notes document CLISP version 2.49Last modified: 2010-07-07
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