| Item |
Regular Expression |
| Postal Abbreviation for State |
 [A-Z][A-Z] |
| City, State |
^.*,[A-Z][A-Z] |
| City, State, Zip (POSIX egrep) |
^.*,[A-Z][A-Z][0-9]{5}(-[0-9]{4})? |
| Month, Day, Year |
[A-Z][a-z]\{3,9\}[0-9]\{1,2\},[0-9]\{4\} |
| U.S. Social Security Number |
[0-9]\{3\}-[0-9]\{2\}-[0-9]\{4\} |
| North-American Local Telephone |
[0-9]\{3\}-[0-9]\{4\} |
| Formatted Dollar Amounts |
\$[0-9]*\.[0-9][0-9] |
| troff In-line Font Requests |
\\f[(BIRP]C*[BW]* |
| troff Requests |
^\.[a-z]\{2\} |
| troff Macros |
^\.[A-Z12]. |
| troff Macro with arguments |
^\.[A-Z12].".*" |
| HTML In-line Codes |
<[^>]*> |
| Ventura Publisher Style Codes |
^@.*=.* |
| Match blank lines |
^$ |
| Match entire line |
^.*$ |
| Match one or more spaces |
* |
