Regression in interpolating function return values in selectors

[xzyfer]

Originally posted in sass/node-sass#1217.

@function foo($bar) {
  @return $bar;
}

#{foo(foo)} {
  bar: baz;
}

LibSass 3.2.5

foo {
  bar: baz; }

LibSass 3.3.0

"foo" {
  bar: baz; }

Spec added sass/sass-spec#556

[xzyfer]

This seems at odds with interpolations always returning a quoted string.
Maybe @chriseppstein can shed some light on the exact semantics here.

[xzyfer]

Ok I had a look at the Ruby source. They explicitly unquote the results of interpolations in ruleset selectors.

[chriseppstein]

Ok I had a look at the Ruby source. They explicitly unquote the results of interpolations in ruleset selectors.

It's more general than that. Interpolation always unquotes any quoted string regardless of context.

[xzyfer]

Thanks for the clarification. I mis-remembered our previous discussion and mistaken though the opposite.

Tracking in #1647.