variable interpolation causes additional string escaping

[kbullaugheyga]

I encountered a problem with node-sass 3.0.0-beta.5 whereby slashes that appear in a string get escaped if that string also has some interpolated variables. This doesn't exist with the older version I was using (2.1.1).

Here's an example:

echo '$x: "y"; li:before { content: "#{$x}\00a0"; }' | node-sass-3

Produces the output:

li:before {
  content: "y\\00a0"; }

I would have expected the output not to have two slashes, as was the case with node-sass 2.1.1, as illustrated below:

echo '$x: "y"; li:before { content: "#{$x}\00a0"; }' | node-sass-2

Produces the output:

li:before {
  content: "y\00a0"; }

Importantly, it doesn't have a problem if there's no variable interpolation:

echo 'li:before { content: "y\00a0"; }' | node-sass-3

Produces:

li:before {
  content: "y\00a0"; }

This problem cropped up when I was compiling bootstrap-sass, which has the following line in the _breadcrumbs.scss file:

content: "#{$breadcrumb-separator}\00a0";

I think this problem means that node-sass 3.0.0-beta.5 will break bootstrap-sass for everyone.

[saper]

Can you try just plain sassc ? Looks like a libsass issue to me...

[kbullaughey]

Yes, I can reproduce it with sassc.

[xzyfer]

Tracking this upstream in sass/libsass#1115