What characters can be used in SCSS/SASS function names and variable names? I want to know especially which non-alphabets like _, -, numbers, punctuations, etc. can be used.
http://sass-lang.com/documentation/file.SASS_CHANGELOG.html#variable_and_mixin_names
The current version of SASS is 3.4.5 (Sep 19, 2014). As of version 3.0.0, the following is true:
SassScript variable and mixin names may now contain hyphens. In fact, they may be any valid CSS3 identifier. For example:
$prettiest-color: #542FA9 =pretty-text color: $prettiest-color
There's no mention of any restrictions on function names in the official documentation, and from the source it appears to not do any kind of error-checking whatsoever. A "valid function name" appears to be completely undocumented.
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