<listitem>
<para>Matches any single character specified within the brackets. For
example, the pattern string 'tty[SR]' would match either 'ttyS' or 'ttyR'.
- Ranges are also supported within this match with the '-' character.
- For example, to match on the range of all digits, the pattern [0-9] would
+ Ranges are also supported via the '-' character.
+ For example, to match on the range of all digits, the pattern [0-9] could
be used. If the first character following the '[' is a '!', any characters
not enclosed are matched.</para>
</listitem>