we know phone numbers are [one group of 3 numbers] [another group of 3 numbers] [a group of 4 numbers] we use D? as a way to find nondigits like the parenthesis This should also work: \(?\d{3}\)?\s?-?.?\d{3}\

This regexp selected random last symbol in string.

MailCleaner attachment name expression.

Lines with length multiple of 3 or 5.

ISO8601 Date Interval with support for fractional values and repeating intervals. DOES NOT SUPPORT fixed intervals (e.g. 2016-03-22P3D or 2016-03-22T14:00Z--2016-03-2518:00+02:00). See https://regex101.com/r/iN2zO9/1 for a ISO8601 date time regex.

Matches an ISO8601 date time string, including fractional time. Does not exclude non-existent times (such as the 29th february in non-leap-years)

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

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.

Delete speces at XML

Test