Groups HTML comments that are between .

.((black\-?friday\.ga)|(alibestsale\.com)|(build\-?a\-?better\-?business\.2your\.site)|(callmebold\.com)|(centurylink\.net)|(cyber\-?monday\.ga)|(digg\.com)|(euro\.typepad\.jp)|(exmail\.qq\.com)).

Case-sensitive matching of a keyword, where the keyword is not a substring of other words.

این عبارت منظم یک کلاس سی اس اس را پیدا می کند

Find if/while in JS code written in PCRE

Checks for password containing at least 1 Upper case, 1 lower case, 1 digit and 1 special character, all together with a length of at least 8. (This pattern allows any order of the requried elements, other than what was been distributed here before)

0111100 will be matched whereas 0111110 will not. Change \1{4} to max repeating count. For max 9 repeating -> \1{9}

Working on email link cleanup.

ICD-10-CM Diagnosis Code per https://www.cms.gov/Medicare/Coding/ICD10/downloads/ICD-10Overview.pdf

extracts hostname from url