CSS escapes

[emagnier]

I'm using the font-icons method (via the @media rule) which display a specific character (the icon) via the CSS content property in a pseudo class (:before/:after).

For some special characters my tool adds a backslash before it, which is valid and compiles well with the official ruby compiler:

[data-icon='test-1']:before {
    content:'\\';
}

[data-icon='test-2']:before {
    content:'\'';
}

[data-icon='test-3']:before {
    content:"\"";
}

But with Libsass I get this error message:
error reading values after '\\';

I also made a search about this and discovered the CSS escape can be use in the selectors:

.\E9motion { ... }
.\E9 dition { ... }
.\0000E9dition { ... }

These selectors represent the word émotion and édition.
More details here: http://www.w3.org/International/questions/qa-escapes

[emagnier]

I'm trying to compile inuit.css (a great OOCSS framework) with Libsass, but it also block on this kind of code:

$open-quote: \201C;
$close-quote: \201D;

[craigbarnes]

According to the CSS 2.1 grammar spec, literal, UTF-8 encoded characters ("nonascii") are valid in selectors too but that also causes an error in libsass:

$ sassc <<< '.émotion {color: red}'
:1: error: invalid top-level expression

http://jsfiddle.net/XbGfh/

[akhleung]

I've added some backslash handling to the refactor branch ... I'll make sure it works with your examples and merge it during the coming week.

[emagnier]

Just for the follow up, all examples listed above works now.
Except this:

[data-icon='test-1']:before {
    content:'\\';
}

[data-icon='test-2']:before {
    content:'\'';
}

[data-icon='test-3']:before {
    content:"\"";
}

[akhleung]

Hmm, looks like I need to futz with the string matcher ... thanks for checking!

[emagnier]

FYI this code also doesn't work:

$open-quote:    «;
$close-quote:   »;

[emagnier]

Thanks!