Loss of spaces in interpolated selectors

[mgol]

The following:

h1:nth-of-type(#{2 + 'n + 1'}) {
    color: red;
}

is transformed by libsass to:

h1:nth-of-type(2n+1) {
  color: red; }

As you can see, spaces around the + are lost. Ruby Sass (3.4.5) preserves them.

[mgol]

That's not a very important issue, obviously. It's just that I'm currently in a process of trying to migrate from Ruby Sass so I'm comparing output of both tools and those minor differences make it a little harder to find true differences.

Is normalizing such stuff in scope of libsass code and Sass spec?

[xzyfer]

Thanks for reporting this! Normalising these things is certainly within the scope of sass-spec.

Could you please add a spec in https://github.com/sass/sass-spec ?

Here's an example of a good spec PR for reference https://github.com/sass/sass-spec/pull/89/files

[mgol]

Done: sass/sass-spec#113

[xzyfer]

This will require refactoring to how we handle combinators. Conveniently it's the same refactoring required for #452. My feeling is these two will be happen at the same time.