Single-line comments (//) in interpolation blocks do not comment the entire line

[andrew-skybound]

Ruby SASS treats single-line comments that appear within an interpolation block as extending to the end of the line. From what I can tell, Libsass treats them as extending to the end of the interpolation block.

SCSS Input:

.test {
    a: a#{b//}c;
}

Libsass (3.2.5):

.test {
    a: abc;
}

Ruby SASS (3.4.19):

Error: Invalid CSS after "}": expected ";", was ""

This is confirmed by changing the input to:

.test {
    a: a#{b//}c;
    }c;
}

Libsass:

Error: invalid top-level expression

Ruby SASS:

.test {
  a: abc;
}

[saper]

This issue seems to be fixed with 3.3.2, only error message is slightly different.

[saper]

Filed #1730 for the error message.