Simply searches for the thread-id in any kind of valid reddit-URL.

For selecting paths without filename

This will identify M.D.'s and D.O.s, regardless of punctuation (within reason) and exclude similar matches (e.g., DMD)

For embeding, replace with //www.youtube.com/embed/$3?list=$2$6

Checks the css value for a border

Finds the next 'fieldish' part of the code like after equals or brackets or comma.

match function names in defun constructs

It correctly handles simple values, empty values, and quoted values with commas inside.

Helper regex for parsing CamelCase identifiers. Captures the first word of the identifier in group 1 and the rest in group 2. Iterate to consume the whole name. Works on fooBar, FooBar, and FOOBar.

Matcha il nome di un articolo (primo carattere, almeno 2 numeri=

regexp for match images extension (png,jpg,jpeg,gif)

matching value of html src attribute

webui test

How to document a Regex? Example 2: added documentation using (?#)

How to document a regex? Example 1: undocumented Regex which works with my test string

Captures credit card looking sequence of digits Luhn validation remains required as a complement.