Drops important space after parentheses

[natevw]

Had a rule like this:

border-color: rgba(255,255,255,0.25) transparent transparent transparent;

It gets emitted like this:

border-color: rgba(255,255,255,0.25)transparent transparent transparent;

Unless I do this:

// NOTE: weird escaping is to avoid lesscpy bug
border-color: e("rgba(255,255,255,0.25) ") transparent transparent transparent;

Note that simple ~"" escaping doesn't work. The lack of space was fine in most browsers, but made IE upset with the rule.