Make GitHub properly detect and highlight Coconut source

[evhub]

See https://github.com/github/linguist.

[evhub]

In progress at github-linguist/linguist#3872.

[eindiran]

I was reading over the guidelines for accepting a language into linguist and it appears that there must be 'hundreds' of unique repositories in the wild.

If you look for Coconut usage in the wild, I don't think it is currently sufficient. There are dozens of unique repositories, but not yet hundreds.

In the meantime, would it be worthwhile to come up with a grammar for Coconut that isn't GPL'ed? The linguist repo doesn't accept grammars which are, but I saw that the linked grammar in the PR you opened @evhub is GPL'ed.

[evhub]

@eindiran Yeah, developing a non-GPL grammar would definitely be a good idea. A possible starting point would be to adapt MagicPython.

[Darkle]

As a fallback, you can use the .gitattributes override feature in individual repos: https://github.com/github/linguist#using-gitattributes
e.g. *.coco linguist-language=python
(note: the highlighting may not show up until the next commit after you added the .gitattributes file.