outputStyle: "compressed" not playing nicely with sass list string

[marker004]

I'm generating css for a bunch of different color styles (.is-red, .is-yellow, .is-purple, etc...). I made a sass list and parse through it like such:

$colors-list: candy-blue $candy-blue $candy-blue-active $candy-blue-tint, grass-green $grass-green $grass-green-active $grass-green-tint, purple $purple $purple-active $purple-tint, red $red $red-active $red-tint, pink $pink $pink-active $pink-tint, orange $orange $orange-active $orange-tint, royal-blue $royal-blue $royal-blue-active $royal-blue-tint, lime-green $lime-green $lime-green-active $lime-green-tint, yellow $yellow $yellow-active $yellow-tint

@each $current-color in $colors-list
.is-#{nth($current-color, 1)} &
  .color-bar
    background-color: #{nth($current-color, 2)}
  .blog__title,
  .blog__author
    a
      border-color: #{nth($current-color, 2)}
      &:hover
        background-color: #{nth($current-color, 4)}

All the color variables are defined and working properly on their own.

And here's the relevant part of my Gruntfile.coffee section:

 sass:
  dist:
    options:
      outputStyle: 'compressed'

Anyway, things work great when I have outputStyle set as "expanded" or "compact". But when outputStyle is "compressed" it will not generate the css for "yellow" and only for "yellow", strangely enough. It doesn't matter what order it is in the color list either, as I've tested moving it to the beginning and the middle of the list. It really just seems to be the string "yellow" as the first part of the list item, because I also tested changing that to something else ("real-yellow") and that worked fine. Any thoughts? Surely "yellow" isn't a reserved word?

[randallmeeker]

I'm getting a different symptom, but same thing. When I do compressed the following class name .something-white will get turned into .something-#fff

[randallmeeker]

example
http://sassmeister.com/gist/5906a5c199e1d50f328b

[randallmeeker]

In my case I found if needed to enclose the string in quotes to be fixed.
http://sassmeister.com/gist/df83bf821ef3a65b6283

[mgreter]

Please include at least the versions you are using. I cannot reproduce the original report, I just get Undefined variable: "$candy-blue" and I also cannot reproduce the second one by @randallmeeker with latest ruby sass (3.4.19). Please provide self-contained examples, so we can actually reproduce the same results!? Please re-open if you can re-produce with latest versions!