Emit transparent colors as rgba(0, 0, 0, 0)

[xzyfer]

[..] we've decided to officially drop support for versions of IE prior to IE9, which was the first to support rgba(). As such, we'll start emitting all colors with no alpha component as rgba(0, 0, 0, 0) across the board.

Sass issue: sass/sass#1782

This is a significant BC break so this should be the last thing to land before tagging 3.5 stable. This way implementors can make releases with the CSS compat stuff in 3.5 without breaking their BC.

[xzyfer]

• if the user authored transparent is should be preserved in the output.
• if a color ends up with a 0 alpha channel at output time, output it as rbga(r, g, b, 0)

[mgreter]

@nex3 @chriseppstein @xzyfer can somebody come up with some comprehensive spec tests? I think implementing it should be pretty trivial. Thanks!

[nex3]

@mgreter The spec changes in sass/sass-spec@4e9edaa should encompass these changes.

[xzyfer]

Please note the blocked label. You're correct that this change is easy, but it will break support for old or browsers. The plan was to release the blocked issues in a post 3.5 release after the distribution settled. This way there was a release with the big 3.5 changes that didn't break older browsers as an upgrade path for node-sass.

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On 13 Jan. 2018 9:01 am, "Natalie Weizenbaum" ***@***.***> wrote: @mgreter <https:/mgreter> The spec changes in sass/sass-spec@ 4e9edaa <sass/sass-spec@4e9edaa> should encompass these changes. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#2298 (comment)>, or mute the thread <https:/notifications/unsubscribe-auth/AAjZWEfaEZFSzF-y5Bte1AtV76fw6RK8ks5tJ9YlgaJpZM4LjhC6> .