[amp108]

Pretty sure most licenses have a clause stating that, if one clause is deemed invalid, that fact doesn't render the entire thing null and void. Check with your lawyer when in doubt.

[TheDong]

If you're curious about the specific license being referenced, it didn't have any clause like that:

https://github.com/kaizhu256/jslint/blob/e188c37059ec66aedf9...

[bromuro]

Thanks for sharing! It’s always nice listening to Douglas Crockford! What an interesting story about XML too :)

[user3939382]

It's called a severability clause https://en.wikipedia.org/wiki/Severability