package Wildmatch is an implementation of Git's wildmatch.c-style pattern matching. Wildmatch patterns are comprised of any combination of the following three components: String literals. A string literal is "foo", or "foo\*" (matching "foo", and "foo\", respectively). In general, string literals match their exact contents in a filepath, and cannot match over directories unless they include the operating system-specific path separator. Wildcards. There are three types of wildcards: Single-asterisk ('*'): matches any combination of characters, any number of times. Does not match path separators. Single-question mark ('?'): matches any single character, but not a path separator. Double-asterisk ('**'): greedily matches any number of directories. For example, '**/foo' matches '/foo', 'bar/baz/woot/foot', but not 'foo/bar'. Double-asterisks must be separated by filepath separators on either side. Character groups. A character group is composed of a set of included and excluded character types. The set of included character types begins the character group, and a '^' or '!' separates it from the set of excluded character types. A character type can be one of the following: Character literal: a single character, i.e., 'c'. Character group: a group of characters, i.e., '[:alnum:]', etc. Character range: a range of characters, i.e., 'a-z'. A Wildmatch pattern can be any combination of the above components, in any ordering, and repeated any number of times.