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

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

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

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

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.

match function names in defun constructs

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

Checks the css value for a border

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

Matches and extracts the relevant parts of reference formulas from Google Sheets. For instance: ='Test Sheet'!H$5

Used for replace words from .pdl

Expressão regular para o código postal (postcode) portugês

How i can parse the following function command line: The separtor is (\s-\w\s) like -c or -d or -n C:/my app/bin/Reader.dll -n Proc_20ms -c C:/Users/Braun/Desktop/test.csv -t Continue the simulation from the first line of the csv-file -j none -V errors and warnings (default) -d , to: ...