Problem with units

[picov]

:root{--uk-position-margin-offset:0px}

is minified as

:root{--uk-position-margin-offset:0}

and this cause bad CSS behaviour

[felipemarcos]

We shouldn't minify 0px as 0 in CSS variables. Unitless 0 as length won't work in calc() and other math functions. Source

Specification Note: Because number-tokens are always interpreted as numbers or integers, "unitless 0" lengths aren’t supported in math functions. That is, width: calc(0 + 5px); is invalid, because it’s trying to add a number to a length, even though both width: 0; and width: 5px; are valid.

Demo

--column-gap: 0px;
width: calc(100% - var(--column-gap));

[obedparla]

We have a fork of this and fixed it by removing the shortenZeroes function in CSS.php. We didn't find much value in removing a few zeroes at the cost of the complexity. A proper solution would need some more regexes.

[RV7PR]

Fixed in #392