Add mixins for stylus. Add in settings of "format_file" (remove "less")

[trolev]

Usage.

Configuration files:
format_file=css (example: styl, less ...)
stylus_mixins=True (%name-mixins.styl)
stylus_mixins_template

Command line arguments:
--stylus - analogously "--css"

[trolev]

example sprite-mixins.styl:

sprite-icon(arg = null, arg2 = null)
  importance = unquote("")
  if arg and arg2
    if arg2 == !important or arg2 == important
      importance = !important
  else if arg == !important or arg == important
      importance = !important
  if p in arg or r in arg
    background-position: 0px 0px importance
    if r in arg
      width: 2px importance
      height: 2px importance
  else
    display: inline-block importance
    background: url(../images/sprite.png) no-repeat 0px 0px importance
    width: 2px importance
    height: 2px importance

Usage

example 1:

.class
  sprite-icon()


.class {
  disaplay: inline-block;
  background: url(../images/sprite.png) no-repeat 0px 0px;
  width: 2px;
  height: 2px;
}

example 2:

.class
  sprite-icon(p)


.class {
  background-position: 0px 0px;
}

example 3:

.class
  sprite-icon(r)


.class {
  background-position: 0px 0px;
  width: 2px;
  height: 2px;
}

example 4, 5 and 6:

.class
  sprite-icon(!important)
  sprite-icon(p, !important)
  sprite-icon(r, !important)


.class {
  background-position: 0px 0px !important;
  width: 2px !important;
  height: 2px !important;
}

[jorgebastida]

Hello @trolev. As part of the migration from glue 0.4 to 0.9, we rewrote glue from scratch in order to make it support new formats quite more easily. I can't merge this Pull Request right now as the codebase is 100% different, but I would love to accept a new one based on glue 0.9.

If you need any help, please send me an email and I would try to help you in the migration. Thanks!