[teddyh]

I wish the code had a license. It is easy enough to add a license to inline Javascript so that it is machine-readable:

https://www.gnu.org/philosophy/javascript-trap.html#Appendix...

[hjek]

Wouldn't this piece of code be classified as "trivial" by the policy in the link, and therefore not need it?

Anyway, if you download the source and look in the 'copyright' file it says:

"This software is copyright (c) Paul Graham and Robert Morris. Permission to use it is granted under the Perl Foundations's Artistic License 2.0"

http://www.arclanguage.org/arc3.1.tar

(I'd be more worried about the license of the Algolia Search provided on Hacker News. Way more JS there. It's even using AngularJS)