Still compatibility issues with libsass?

[zwilias]

Hi,

bem-constructor still appears to have some issues with libsass compatibility, like it did with #8 but with different errors.

Particularly, it appears to fail over the use of selector-append(&...). This appears to be a sass-script feature which isn't very clearly documented anywhere. Hence, my question isn't really whether we can fix this on the bem-constructor side of things, but rather, to document the intended behavior of that construct so we can do a proper bug-report on the libsass side of things.

Anyone who could clarify what this specific syntax is actually intended to do?

Thanks!

[danielguillan]

Hi @zwilias,

The selector-append() function is not available in Libsass yet. Neither are any selector manipulation functions. The issue has already been filled and work is in progress. Support for selector manipulation functions should land in version 3.3 of Libsass: sass/libsass#963

We might be able to find a temporary workaround similar to the one I used on the Modernizr mixin which uses placeholders and extends to produce the selectors: https://github.com/danielguillan/modernizr-mixin/blob/master/stylesheets/_modernizr.scss#L64-L75

[danielguillan]

I've been trying to find a workaround to get the BEM Constructor working with Libsass, but unfortunately there are still many problems. Also, newer versions of Libsass introduced a regression that breaks the @at-root directive (sass/libsass/issues/1210) and make it totally impossible for the mixins to work.

I think we'll have to wait for Libsass 3.3. 😞

[danielguillan]

BEM Constructor now works with newer versions of Libsass.