Jade mixins for common Bootstrap buttons with icons

buttons.jade

mixin btn-like(num)
  a(href="#" title="Like").btn.btn-default #{num}
    span.sr-only Like
    if num
      i.icon-like.icon-after
    else
      i.icon-like

mixin btn-liked(num)
  a(href="#" title="Unlike").btn.btn-default.active #{num}
    span.sr-only Unlike
    if num
      i.icon-like-filled.icon-after
    else
      i.icon-like-filled

mixin btn-dislike(num)
  a(href="#" title="Dislike").btn.btn-default #{num}
    span.sr-only Dislike
    if num
      i.icon-dislike.icon-after
    else
      i.icon-dislike

mixin btn-disliked(num)
  a(href="#" title="Remove Dislike").btn.btn-default.active #{num}
    span.sr-only Remove Dislike
    if num
      i.icon-dislike-filled.icon-after
    else
      i.icon-dislike-filled

mixin btn-heart(num)
  a(href="#" title="Like").btn.btn-default #{num}
    span.sr-only Like
    if num
      i.icon-heart.icon-after
    else
      i.icon-heart

mixin btn-hearted(num)
  a(href="#" title="Unlike").btn.btn-default.active #{num}
    span.sr-only Unlike
    if num
      i.icon-heart-filled.icon-after
    else
      i.icon-heart-filled

mixin btn-reply
  a(href="#", title="Reply").btn.btn-default
    span.sr-only Reply
    i.icon-reply

mixin btn-retweet
  a(href="#" title="Retweet").btn.btn-default
    span.sr-only Retweet
    i.icon-retweet

mixin btn-fav
  a(href="#" title="Favourite").btn.btn-default
    i.icon-star
    span.sr-only Favourite

mixin btn-faved
  a(href="#" title="Unfavourite").btn.btn-default
    i.icon-star-filled
    span.sr-only Unfavourite

mixin btn-comment(num)
  a(href="#" title="Comment").btn.btn-default #{num}
    span.sr-only Comment
    if num
      i.icon-comment.icon-after
    else
      i.icon-comment

mixin btn-pin
  a(href="#" title="Pin it").btn.btn-default Pin it

mixin btn-pinned
  a(href="#" title="Unpin it").btn.btn-default Unpin it

mixin btn-visit
  a(href="#" title="Visit Site" class!=attributes.class).btn.btn-default Visit Site

mixin btn-more(menu)
  if !menu
    -var menu = ["Report", "Share"]
  .btn-group.dropup
    a(href="#" data-toggle="dropdown").btn.btn-default.dropdown-toggle
      span.sr-only More
      i.icon-more
    ul(role="menu").dropdown-menu
      each text in menu
        li: a(href="#")= text

mixin btn-edit
  a(href="#" data-toggle="dropdown" title="Edit" class!=attributes.class).btn.btn-default
    span Edit
    i.icon-edit.icon-after