Remove autogenerated file name suffixes from images whilst preserving the extension (e.g. .jpg) These suffixes are usually added when filename already exists in the directory an image is being saved to by an application. Magento is a fine example of a system that does this.

parse the apache access log

find pronouceable 10 letter srings that are either all caps or all lowercases based on jsbin.com pronouceable urls

This pattern would select the whole image tag

This regular expression will match an IPv4 address as well as both compressed or uncompressed IPv6 address.

Matches CSS Length Units according to: http://www.w3schools.com/cssref/css_units.asp

This is used when removing Script Tags and their content.

Match time duration in the following formats only: 1h 30m 59m 1h 33m 11h 2m

Matches proxies in ip:port format. Takes into account that octets cant start with a 0, and that octets that are not the first octet can be a 0 if there are no more numbers behind it.

NC_000913.3 Escherichia coli str. K-12 substr. MG1655, patial genome

Matches french numbers (not special numbers like 115, 18). First matching group contains the right part without prefix (0, +33, 33, 033, or 0033).

validate an IP v4

Multiple emails seperated with comma allowed multiple dot ltds

Use to find css sizing that migh need conversion to vs or alike.

This regular expression is build from the description of NINO number of GOV.UK,

This is a bit simpler version that is still quite robust. It was taken from a Formik example.

Visual tag and Back tag cannot more than 15 characters or only can contain uppercase, lowercase, space and dash.