Merge branch '3.0.0-wip' of github.com:twbs/bootstrap into 3.0.0-wip

less/buttons.less

@@ -54,26 +54,26 @@
 // --------------------------------------------------
 
 .btn-default {
-  .btn-pseudo-states(@btn-default-color; @btn-default-bg; @btn-default-border);
+  .button-variant(@btn-default-color; @btn-default-bg; @btn-default-border);
 }
 .btn-primary {
-  .btn-pseudo-states(@btn-primary-color; @btn-primary-bg; @btn-primary-border);
+  .button-variant(@btn-primary-color; @btn-primary-bg; @btn-primary-border);
 }
 // Warning appears as orange
 .btn-warning {
-  .btn-pseudo-states(@btn-warning-color; @btn-warning-bg; @btn-warning-border);
+  .button-variant(@btn-warning-color; @btn-warning-bg; @btn-warning-border);
 }
 // Danger and error appear as red
 .btn-danger {
-  .btn-pseudo-states(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
+  .button-variant(@btn-danger-color; @btn-danger-bg; @btn-danger-border);
 }
 // Success appears as green
 .btn-success {
-  .btn-pseudo-states(@btn-success-color; @btn-success-bg; @btn-success-border);
+  .button-variant(@btn-success-color; @btn-success-bg; @btn-success-border);
 }
 // Info appears as blue-green
 .btn-info {
-  .btn-pseudo-states(@btn-info-color; @btn-info-bg; @btn-info-border);
+  .button-variant(@btn-info-color; @btn-info-bg; @btn-info-border);
 }
 
 
@@ -121,17 +121,13 @@
 // --------------------------------------------------
 
 .btn-lg {
-  padding: @padding-large-vertical @padding-large-horizontal;
-  font-size: @font-size-large;
-  line-height: @line-height-large; // ensure even-numbered height of button next to large input
-  border-radius: @border-radius-large;
+  // line-height: ensure even-numbered height of button next to large input
+  .button-size(@padding-large-vertical; @padding-large-horizontal; @font-size-large; @line-height-large; @border-radius-large);
 }
 .btn-sm,
 .btn-xs {
-  padding: @padding-small-vertical @padding-small-horizontal;
-  font-size: @font-size-small;
-  line-height: @line-height-small; // ensure proper height of button next to small input
-  border-radius: @border-radius-small;
+  // line-height: ensure proper height of button next to small input
+  .button-size(@padding-small-vertical; @padding-small-horizontal; @font-size-small; @line-height-small; @border-radius-small);
 }
 .btn-xs {
   padding: 3px 5px;

less/mixins.less

@@ -352,11 +352,11 @@
   }
 }
 
-// Button pseudo states
+// Button variants
 // -------------------------
 // Easily pump out default styles, as well as :hover, :focus, :active,
 // and disabled options for all buttons
-.btn-pseudo-states(@color; @background; @border) {
+.button-variant(@color; @background; @border) {
   color: @color;
   background-color: @background;
   border-color: @border;
@@ -384,6 +384,15 @@
   }
 }
 
+// Button sizes
+// -------------------------
+.button-size(@padding-vertical; @padding-horizontal; @font-size; @line-height; @border-radius) {
+  padding: @padding-vertical @padding-horizontal;
+  font-size: @font-size;
+  line-height: @line-height;
+  border-radius: @border-radius;
+}
+
 // Labels
 // -------------------------
 .label-variant(@color) {