Wildmat patterns are used by this program only when refreshing the newsgroup
list. All other searches use a boolean AND, OR, NOT searching.
The Wildmat Format
A wildmat pattern is anchored at the beginning and end of the line unless it is preceded or appended with a wildcard character.
* (asterisk) matches 0 or more characters. alt.binaries* matches all newsgroups that start with "alt.binaries".
? (question mark) matches a single character.
A list or range of characters can be grouped in square brackets: [abcj-m] will match a, b, c, j, k, l, or m. The dash may be included in the set if
it is the first or last character. The closing bracket ] can be included if it is the first character.
^ (caret) is used as a logical not with a set of characters by including it just after the opening bracket. [^a-c] will match any character other
than a, b and c.
Each of the special characters [, *, \, ? can be interpreted as a normal character by preceding it with a \ (backslash). Two backslashes together \\ are treated as a single backslash with no special meaning.