Allow rgb(R G B / A) notation

[jhard]

it's valid to write a color value as rgb(R G B / A), see MDN.

I've tackled this with a simple approach, converting it to rgba during parsing and recognizing this notation with a regexp on a peek, see this commit: jhard@a477cb4

I'm a monkey and I'm terrible at git and github (and PHP, some will say, and they're not wrong). If this approach is up to your standards, I'd be happy to create a pull request (I might need some hand-holding and encouragement, but I've done this before). If there's a better approach than using a regexp and peek, I might be able to do that, too.

It would change the CSS: rgb(R G B / A) goes in, rgba(R, G, B, A) is rendered out, I'm not sure what your policy on that is. If you don't like the conversion to rgba, I understand.

Thanks for your time!

[JakeQZ]

Hi @jhard,

Many apologies for the extremely long delay in getting back to you on this. There are only three active maintainers of this repository, who do it in their spare time, which is often not available.

The same issue has been reported in #755 and we are working towards supporting the CSS Color Module Level 4 syntax.

I'd be happy to create a pull request (I might need some hand-holding and encouragement, but I've done this before).

We absolutely welcome PRs, and would happily hold your hand through the process. Some people get a bit peeved when we request changes during code review, though from what you've written, it doesn't seem like you would.

Feel free to see if you may be able to submit a PR related to #755. Closing as duplicate of that.