zero percentage value minification

[H1D]

clean-css tend to minify height: 0% to height:0
But they aren't equal!

Examples:
http://codepen.io/H1D/pen/bdzRJo – before minification
http://codepen.io/H1D/pen/YXBrze – after minification

[jakubpawlowicz]

It's interesting that no one spotted it before! Are you aware of any kind of rules that govern when we can and can't turn 0% to 0? Does it apply to height only?

[H1D]

Looks like it depends whether or not selected element has content. So there is no chance to decide turn 0% to 0 or not during minification phase

[jakubpawlowicz]

Thanks for looking into this. I wonder if it applies to any other elements, like width or min-(width|height).

[H1D]

looks like it is:
http://codepen.io/H1D/pen/bdzRJo

[jakubpawlowicz]

That's only for min-height, right?

[H1D]

I believe yes

[jakubpawlowicz]

Fixed on master, you can still use properties.zeroUnits compatibility switch in 3.3, see: https://github.com/jakubpawlowicz/clean-css#how-to-set-compatibility-mode

[H1D]

👍

[jakubpawlowicz]

It's just been released with clean-css 3.4. 🎆 Thanks for valuable input!