Regexp::common is a perl module that exports a single hash ('%re') that stores or generates commonly needed regular expressions.

the module currently provides the following patterns:

* balanced parentheses and brackets
* delimited text (with escapes)
* integers and floating-point numbers in any base (up to 36)
* comments in 44 languages
* offensive language
* lists of any pattern
* ipv4 and ipv6 addresses
* uris
* zip codes