Thanks for your help !

bourbon.scss

/*------------------------------------------------------*\
How to use transition on a vendor-prefixed property  ?
 http://bourbon.io/docs/#transitions
\*-------------------------------------------------------*/

.example {
    @include transition (transition-property-names((transform), moz) 1.0s ease-in);
}

/*

So we would like to have :

.example {
  -webkit-transition: -webkit-transform 1s ease-in;
     -moz-transition: -moz-transform 1s ease-in;
          transition: transform 1s ease-in;
}

But when we use the  mixin from Bourbon, it compile :

.example {
  // -moz- everywhere !
  -webkit-transition: -moz-transform 1s ease-in 0s;
     -moz-transition: -moz-transform 1s ease-in 0s;
          transition: -moz-transform 1s ease-in 0s;
}


Tried :
@include transition (transition-property-names((transform), (webkit, moz, o)) 1.0s ease-in);
but that don't work !

Thanks !

*/

For transforming a prefixed property-name, use the transition properties individually, not the shorthand mixin.

Like so:

    @include transition-property (transform);
    @include transition-duration(1.0s);
    @include transition-timing-function(ease-in);

Thanks for your help @plapier :-) It helps but i would like to use a shorthand as i do for every mixins. anyway no prob.
So you're telling us that mixin doesn't work at all ? If so, why still keepin it in the lib ?