grunt

dist/js/bootstrap.js

@@ -359,8 +359,11 @@ if (typeof jQuery === 'undefined') {
   }
 
   Carousel.prototype.getItemForDirection = function (direction, active) {
-    var delta = direction == 'prev' ? -1 : 1
     var activeIndex = this.getItemIndex(active)
+    var willWrap = (direction == 'prev' && activeIndex === 0)
+                || (direction == 'next' && activeIndex == (this.$items.length - 1))
+    if (willWrap && !this.options.wrap) return active
+    var delta = direction == 'prev' ? -1 : 1
     var itemIndex = (activeIndex + delta) % this.$items.length
     return this.$items.eq(itemIndex)
   }
@@ -405,14 +408,8 @@ if (typeof jQuery === 'undefined') {
     var $next     = next || this.getItemForDirection(type, $active)
     var isCycling = this.interval
     var direction = type == 'next' ? 'left' : 'right'
-    var fallback  = type == 'next' ? 'first' : 'last'
     var that      = this
 
-    if (!$next.length) {
-      if (!this.options.wrap) return
-      $next = this.$element.find('.item')[fallback]()
-    }
-
     if ($next.hasClass('active')) return (this.sliding = false)
 
     var relatedTarget = $next[0]
@@ -576,7 +573,7 @@ if (typeof jQuery === 'undefined') {
     if (this.transitioning || this.$element.hasClass('in')) return
 
     var activesData
-    var actives = this.$parent && this.$parent.find('> .panel').children('.in, .collapsing')
+    var actives = this.$parent && this.$parent.children('.panel').children('.in, .collapsing')
 
     if (actives && actives.length) {
       activesData = actives.data('bs.collapse')

docs/dist/js/bootstrap.js

@@ -359,8 +359,11 @@ if (typeof jQuery === 'undefined') {
   }
 
   Carousel.prototype.getItemForDirection = function (direction, active) {
-    var delta = direction == 'prev' ? -1 : 1
     var activeIndex = this.getItemIndex(active)
+    var willWrap = (direction == 'prev' && activeIndex === 0)
+                || (direction == 'next' && activeIndex == (this.$items.length - 1))
+    if (willWrap && !this.options.wrap) return active
+    var delta = direction == 'prev' ? -1 : 1
     var itemIndex = (activeIndex + delta) % this.$items.length
     return this.$items.eq(itemIndex)
   }
@@ -405,14 +408,8 @@ if (typeof jQuery === 'undefined') {
     var $next     = next || this.getItemForDirection(type, $active)
     var isCycling = this.interval
     var direction = type == 'next' ? 'left' : 'right'
-    var fallback  = type == 'next' ? 'first' : 'last'
     var that      = this
 
-    if (!$next.length) {
-      if (!this.options.wrap) return
-      $next = this.$element.find('.item')[fallback]()
-    }
-
     if ($next.hasClass('active')) return (this.sliding = false)
 
     var relatedTarget = $next[0]
@@ -576,7 +573,7 @@ if (typeof jQuery === 'undefined') {
     if (this.transitioning || this.$element.hasClass('in')) return
 
     var activesData
-    var actives = this.$parent && this.$parent.find('> .panel').children('.in, .collapsing')
+    var actives = this.$parent && this.$parent.children('.panel').children('.in, .collapsing')
 
     if (actives && actives.length) {
       activesData = actives.data('bs.collapse')

less/carousel.less

@@ -30,7 +30,7 @@
       .transition-transform(~'0.6s ease-in-out');
       .backface-visibility(~'hidden');
       .perspective(1000);
-      
+
       &.next,
       &.active.right {
         .translate3d(100%, 0, 0);