bug?!: sass aborting with error

[marble]

Problem

It looks to me like line 245 has an error (ever since) https://github.com/snide/wyrm/blob/master/sass/wyrm_core/_form.sass#L245: What's "\9" in that line?

I have SASS installed via npm install sass. That way I got version: 1.17.2 That version will abort with an error unless I remove "\9":

Workaround and insights

I have another SASS installed via sudo gem install sass. This has version Ruby Sass 3.7.3. This versions does not abort with an error.

Conclusions

1. Please fix line 245 if it turns out to be an error
2. Until then, in case of trouble, use Sass version 3.7.x