@-webkit-keyframes rule not being minified to one line

An example CSS rule of:

@-webkit-keyframes bugfix {
    from { padding: 0 }
    to { padding: 0 }
}

Is processed via clean-css as:

@-webkit-keyframes bugfix{from{padding:0}
to{padding:0}
}

Ideally the whole rule should be all on the same line, I suspect its because of this being an at-rule and perhaps clean-css is seeing it as separate CSS properies, the syntax is weird. I use keepBreaks: true, which I think is where the problem is, but all other normal CSS rules are minified to a single line without any issue.

Equally, applying the rule above as a single line and then processing it with clean-css, causes it to be broken onto a new line, as noted in the example.

[jamesmacwhite]

@jakubpawlowicz This is really great work! I’ll definitely be implementing this into my email boilerplate project. I’ll do some experimenting, thanks for the new config options!

[jakubpawlowicz]

thanks @jamesmacwhite, 4.0 should be out soon!