Nested @supports conditions don't render correctly

[xzyfer]

Nested @supports conditions do not render correctly.

Input

@supports ((foo: bar) or (foo: bar) or (foo: bar)) and (foo: bar) {
  div {
    bar: baz;
  }
}

Expected output

@supports (foo: bar) or (foo: bar) or (foo: bar) and (foo: bar) {
  div {
    bar: baz; } }

Actual output

@supports (: or ) and (foo: bar) {
  div {
    bar: baz; } }

Specs added sass/sass-spec#122.

[HamptonMakes]

Actually, the test was written wrong for this one, @xzyfer. You have to use 3.4 to generate this correctly. Your test showed

@supports ((foo: bar) or (foo: bar) or (foo: bar)) and (foo: bar) {
  div {
    bar: baz;
  }
}

When it should be...

@supports (foo: bar) or (foo: bar) or (foo: bar) and (foo: bar) {
  div {
    bar: baz;
  }
}

I'm updating this test in the threefour branch at sass-spec

[HamptonMakes]

Actually, let me move this over to master, so that you can test the single issue without dealing with all teh 3.4 issues (though, this is related to one major issue i've run into, methinks)

[xzyfer]

Sorry I'm not following @supports (foo: bar) or (foo: bar) or (foo: bar) and (foo: bar) and @supports ((foo: bar) or (foo: bar) or (foo: bar)) and (foo: bar) have two very different meanings.

You're example worked in my original implementation (#612) but my case failed as described in the issue description.

According to the grammar supplied by the w3c my example is correct http://www.w3.org/TR/css3-conditional/#at-supports

It feels like this may be bug in Ruby sass. It also appears that Ruby sass does not support negation http://sassmeister.com/gist/7503101e47d9b4e1a65b

[xzyfer]

I've opened an issue on Ruby sass to track this sass/sass#1512

[mgreter]

What's the status on this?

[mgreter]

@xzyfer Added a comment to sass/sass#1512, IMHO you're correct on this one!

[mgreter]

I'm convinced now that this is a ruby sass bug. @xzyfer if you agree we can IMO close this (maybe see the example I posted in the issue you've opened). I already added it to the 3.2 milestone 😉

[xzyfer]

Yeah I'm certain it's a bug in Sass sass/sass-spec@c58ab22. :Ship:

[mgreter]

There is an interesting difference in @support and @media when it comes to this. Added another comment to the ruby sass issue to document it. Not sure what to make of it though. Maybe we could alert the user of possible unwanted errors, but lets see what ruby sass has to say.