SCSS always expands comma selectors and single-line rules to multiple lines

[j-f1]

Prettier 1.9.2
Playground link

--parser scss

Input:

h1, h2, h3, h4, h5, h6 {
  font-weight: bold;
}

h1 { font-size: 3em; }
h2 { font-size: 2.5em; }
h3 { font-size: 2em; }
h4 { font-size: 1.5em; }
h5 { font-size: 1em; }
h6 { font-size: 0.5em; }

Output:

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: bold;
}

h1 {
  font-size: 3em;
}
h2 {
  font-size: 2.5em;
}
h3 {
  font-size: 2em;
}
h4 {
  font-size: 1.5em;
}
h5 {
  font-size: 1em;
}
h6 {
  font-size: 0.5em;
}

Expected behavior:
No changes from input

[lydell]

Sorry, the decision has already been made to put every selector on its own line. See #2047, #1962, #2057, #2213.

Regarding single-line rules, that's consistent with how Prettier always prints if (foo) { something(); } multi-line.

P.S. Could you try to report one thing per issue in the future? Makes things much easier to discuss. Thanks! :)

[j-f1]

P.S. Could you try to report one thing per issue in the future? Makes things much easier to discuss. Thanks! :)

Sorry about that. I kinda got carried away when making the example in the playground 😄

Regarding single-line rules, that's consistent with how Prettier always prints if (foo) { something(); } multi-line.

Yes, but JS also has the if (foo) something(); syntax. CSS doesn’t have that, and it would be nice IMHO to inline a CSS block with one statement (i.e. img { background: red; margin: 2px; } gets transformed, while img { background: red; } doesn’t.

[j-f1]

Would a PR be accepted for making single-declaration rules like foo.bar { baz: 'quux'; } stay on one line be accepted?

[lydell]

@j-f1 I doubt that. Prettier tries to have as few options as possible. See #3038 for a CSS-option PR that went far but probably won't be merged.