This should be the real first answer in "Best Pratices".

really out of box solution.

this also affects to numbers (\w corresponds to [a-zA-Z_0-9])

Copy it and paste it in regex101.com

Could someone explain me how this reg exp works? I would really be grateful

nice solution

somehow my brain misses chars and map :p

good.

I didn't know it existed, but that is really useful!

The description only talks about punctuation, no intended behavior is specified for numbers (and underscores inside words can hardly be called punctuation either). So \w is prefectly acceptable here, as it's [a-b] due to lack of specification.

Holy shit, I like this solution awesomely much :-)

nothing crazy here if you are familiar with curyying and composition

So cool than mime

Cool Algorithm