Caddyfile syntax highlighting

[francislavoie]

Caddy supports markdown rendering via Blackfriday, which uses Chroma for syntax highlighting.

I think it would be awesome if Chroma would support a caddyfile lexer so that we can syntax highlight all the examples in the Caddy documentation! It would also mean that the Caddy could syntax highlight its own configuration!

See here for information on the syntax. It's quite simple.

Caddy v1 and Caddy v2 have slightly different syntax, but @mohammed90 found this VS Code syntax for v1 which could be useful as a base reference?

Thanks!

[alecthomas]

The linked syntax is a Textmate grammar, so I think a more flexible solution is to add an importer for those.

[alecthomas]

I actually played around with this a bit today and had some success, but unfortunately that Textmate syntax is really quite bad. I think Textmate support in general is a good idea, but for this particular syntax it's probably better just to write one from scratch.

[francislavoie]

Thanks for looking into it! Let me know if you have any questions regarding the syntax.

[mholt]

It shouldn't be too hard to write a new one from scratch; the Caddyfile is relatively simple, but there might be a few edge cases that take some time to work out (and that's OK for later too).