execute mixin in another mixin

[iflan]

Originally reported on Google Code with ID 18

this is a feature

for example 

@defmixin border-radius(RADIUS) {
    @mixin border-radius-corners(RADIUS, RADIUS, RADIUS, RADIUS)
}

@defmixin border-radius-corners(LT, RT, LB, RB) {
    -webkit-border-radius: LT RT LB RB;
    -moz-border-radius: LT RT LB RB;
    border-radius: LT RT LB RB;
}

Reported by randomailer on 2012-05-04 07:18:31