Examine the following snippet:
=mixin(!a, !b, ..)
prop-a: !a
prop-b: !b ..
It works fine if all arguments are provided even if I provide empty
value e.g. "" or " ". So, to deal with this one, I made me self a
short mixin:
=property?(!property, !value)
@if !value != ""
@if !value != "inherit"
@if !value != "transparent"
@if !value != "none"
#{!property}: #{!value}
which I use like this
=mixin(!a = "", !b = "", ..)
+property("prop-a", !a)
+property("prop-b", !b) ..
which works better and omits empty values. However, to me it would be
nice to make something like
=mixin(!a, !b, ..)
? prop-a: !a
? prop-b: !b ..
which would do the same thing -- if !a exists, and is not "", and is
not " ", then add this line to the css.
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