Document RegEx with links to online service

[rugk]

E.g. as for the RegExes here:

showdown/src/subParsers/makehtml/autoLinks.js

Lines 3 to 7 in 3db9200

	var simpleURLRegex = /([*~_]+|\b)(((https?|ftp|dict):\/\/|www\.)[^'">\s]+?\.[^'">\s]+?)()(\1)?(?=\s|$)(?!["<>])/gi,
	simpleURLRegex2 = /([*~_]+|\b)(((https?|ftp|dict):\/\/|www\.)[^'">\s]+\.[^'">\s]+?)([.!?,()\[\]])?(\1)?(?=\s|$)(?!["<>])/gi,
	delimUrlRegex = /()<(((https?|ftp|dict):\/\/|www\.)[^'">\s]+)()>()/gi,
	simpleMailRegex = /(^|\s)(?:mailto:)?([A-Za-z0-9!#$%&'*+-/=?^_`{|}~.]+@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)(?=$|\s)/gmi,
	delimMailRegex = /<()(?:mailto:)?([-.\w]+@[-a-z0-9]+(\.[-a-z0-9]+)*\.[a-z]+)>/gi,

For the URL examples I have this here:
https://regex101.com/r/8nasII/2

It has some unit tests from https://mathiasbynens.be/demo/url-regex.

[tivie]

thanks. You should issue a PR for develop branch.

[rugk]

Well… one needs to add regex and some useful examples for all other links there, too. My one was just one example.