equal
,
mismatched_char
, inserted_char
, transposed_char
,
separated
and transposed_word
.
| Matches one arbitrary character. |
| Matches any number of arbitrary characters. |
[ ... ] | Matches one of the characters specified between the brackets.<char1>-<char2>indicates a range. |
{...} | Matches any of the patterns of the comma separated list between the braces. |