Merge branch 'master' into derp

Conflicts:
	dist/css/bootstrap.css.map
	dist/css/bootstrap.min.css
	docs/_includes/components/navs.html
	docs/_includes/css/images.html
	docs/_includes/js/dropdowns.html
	docs/_includes/js/tabs.html
	docs/assets/css/docs.min.css
	docs/dist/css/bootstrap.css.map
	docs/dist/css/bootstrap.min.css

.travis.yml

@@ -5,7 +5,7 @@ before_install:
   - time travis_retry sudo pip install -r test-infra/requirements.txt
   - rvm use 1.9.3 --fuzzy
   - export GEMDIR=$(rvm gemdir)
-  - if [ "$TWBS_TEST" = validate-html ]; then echo "ruby=$(basename $GEMDIR) jekyll=$JEKYLL_VERSION" > pseudo_Gemfile.lock; fi
+  - if [ "$TWBS_TEST" = validate-html ]; then echo "ruby=$(basename $GEMDIR) jekyll=$JEKYLL_VERSION rouge=$ROUGE_VERSION" > pseudo_Gemfile.lock; fi
   - "export TRAVIS_COMMIT_MSG=\"$(git log --format=%B --no-merges -n 1)\""
   - echo "$TRAVIS_COMMIT_MSG" | grep '\[skip validator\]'; export TWBS_DO_VALIDATOR=$?; true
   - echo "$TRAVIS_COMMIT_MSG" | grep '\[skip sauce\]'; export TWBS_DO_SAUCE=$?; true
@@ -19,6 +19,7 @@ after_script:
 env:
   global:
     - JEKYLL_VERSION: 2.1.0
+    - ROUGE_VERSION: 1.4.0
     - SAUCE_USERNAME: bootstrap
     - secure: "pJkBwnuae9dKU5tEcCqccfS1QQw7/meEcfz63fM7ba7QJNjoA6BaXj08L5Z3Vb5vBmVPwBawxo5Hp0jC0r/Z/O0hGnAmz/Cz09L+cy7dSAZ9x4hvZePSja/UAusaB5ogMoO8l2b773MzgQeSmrLbExr9BWLeqEfjC2hFgdgHLaQ="
     - secure: "gqjqISbxBJK6byFbsmr1AyP1qoWH+rap06A2gI7v72+Tn2PU2nYkIMUkCvhZw6K889jv+LhQ/ybcBxDOXHpNCExCnSgB4dcnmYp+9oeNZb37jSP0rQ+Ib4OTLjzc3/FawE/fUq5kukZTC7porzc/k0qJNLAZRx3YLALmK1GIdUY="

README.md

@@ -69,8 +69,8 @@ Bootstrap's documentation, included in this repo in the root directory, is built
 1. If necessary, [install Jekyll](http://jekyllrb.com/docs/installation) (requires v2.1.x).
   - **Windows users:** Read [this unofficial guide](https://github.com/juthilo/run-jekyll-on-windows/) to get Jekyll up and running without problems.
 2. Install the Ruby-based syntax highlighter, [Rouge](https://github.com/jneen/rouge), with `gem install rouge`.
-2. From the root `/bootstrap` directory, run `jekyll serve` in the command line.
-3. Open <http://localhost:9001> in your browser, and voilà.
+3. From the root `/bootstrap` directory, run `jekyll serve` in the command line.
+4. Open <http://localhost:9001> in your browser, and voilà.
 
 Learn more about using Jekyll by reading its [documentation](http://jekyllrb.com/docs/home/).
 

dist/js/bootstrap.js

@@ -1436,7 +1436,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     var isBody = el.tagName == 'BODY'
     var isSvg  = window.SVGElement && el instanceof window.SVGElement
 
-    var elRect    = typeof el.getBoundingClientRect == 'function' ? el.getBoundingClientRect() : null
+    var elRect    = el.getBoundingClientRect ? el.getBoundingClientRect() : null
     var elOffset  = isBody ? { top: 0, left: 0 } : $element.offset()
     var scroll    = { scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop() }
     var outerDims = isSvg ? {} : {

docs/_includes/components/badges.html

@@ -22,20 +22,20 @@
   <p>Built-in styles are included for placing badges in active states in pill navigations.</p>
   <div class="bs-example">
     <ul class="nav nav-pills" role="tablist">
-      <li class="active"><a href="#">Home <span class="badge">42</span></a></li>
-      <li><a href="#">Profile</a></li>
-      <li><a href="#">Messages <span class="badge">3</span></a></li>
+      <li role="presentation" class="active"><a href="#">Home <span class="badge">42</span></a></li>
+      <li role="presentation"><a href="#">Profile</a></li>
+      <li role="presentation"><a href="#">Messages <span class="badge">3</span></a></li>
     </ul>
     <br>
     <ul class="nav nav-pills nav-stacked" role="tablist" style="max-width: 260px;">
-      <li class="active">
+      <li role="presentation" class="active">
         <a href="#">
           <span class="badge pull-right">42</span>
           Home
         </a>
       </li>
-      <li><a href="#">Profile</a></li>
-      <li>
+      <li role="presentation"><a href="#">Profile</a></li>
+      <li role="presentation">
         <a href="#">
           <span class="badge pull-right">3</span>
           Messages
@@ -60,7 +60,7 @@
   </div>
 {% highlight html %}
 <ul class="nav nav-pills nav-stacked" role="tablist">
-  <li class="active">
+  <li role="presentation" class="active">
     <a href="#">
       <span class="badge pull-right">42</span>
       Home

docs/_includes/components/navs.html

@@ -46,32 +46,32 @@
   <p>Takes the basic nav from above and adds the <code>.nav-tabs</code> class to generate a tabbed interface.</p>
   <div class="bs-example">
     <ul class="nav nav-tabs" role="tablist">
-      <li class="nav-item active">
+      <li role="presentation" class="nav-item active">
         <a href="#" class="nav-link">Active</a>
       </li>
-      <li class="nav-item">
+      <li role="presentation" class="nav-item">
         <a href="#" class="nav-link">Link</a>
       </li>
-      <li class="nav-item">
+      <li role="presentation" class="nav-item">
         <a href="#" class="nav-link">Another link</a>
       </li>
-      <li class="nav-item disabled">
+      <li role="presentation" class="nav-item disabled">
         <a href="#" class="nav-link">Disabled</a>
       </li>
     </ul>
   </div>
 {% highlight html %}
 <ul class="nav nav-tabs" role="tablist">
-  <li class="nav-item active">
+  <li role="presentation" class="nav-item active">
     <a href="#" class="nav-link">Active</a>
   </li>
-  <li class="nav-item">
+  <li role="presentation" class="nav-item">
     <a href="#" class="nav-link">Link</a>
   </li>
-  <li class="nav-item">
+  <li role="presentation" class="nav-item">
     <a href="#" class="nav-link">Another link</a>
   </li>
-  <li class="nav-item disabled">
+  <li role="presentation" class="nav-item disabled">
     <a href="#" class="nav-link">Disabled</a>
   </li>
 </ul>
@@ -85,32 +85,32 @@
   <p>Take that same HTML, but use <code>.nav-pills</code> instead:</p>
   <div class="bs-example">
     <ul class="nav nav-pills" role="tablist">
-      <li class="nav-item active">
+      <li role="presentation" class="nav-item active">
         <a href="#" class="nav-link">Active</a>
       </li>
-      <li class="nav-item">
+      <li role="presentation" class="nav-item">
         <a href="#" class="nav-link">Link</a>
       </li>
-      <li class="nav-item">
+      <li role="presentation" class="nav-item">
         <a href="#" class="nav-link">Another link</a>
       </li>
-      <li class="nav-item disabled">
+      <li role="presentation" class="nav-item disabled">
         <a href="#" class="nav-link">Disabled</a>
       </li>
     </ul>
   </div>
 {% highlight html %}
 <ul class="nav nav-pills" role="tablist">
-  <li class="nav-item active">
+  <li role="presentation" class="nav-item active">
     <a href="#" class="nav-link">Active</a>
   </li>
-  <li class="nav-item">
+  <li role="presentation" class="nav-item">
     <a href="#" class="nav-link">Link</a>
   </li>
-  <li class="nav-item">
+  <li role="presentation" class="nav-item">
     <a href="#" class="nav-link">Another link</a>
   </li>
-  <li class="nav-item disabled">
+  <li role="presentation" class="nav-item disabled">
     <a href="#" class="nav-link">Disabled</a>
   </li>
 </ul>
@@ -120,32 +120,32 @@
   <p>Just add <code>.nav-stacked</code>.</p>
   <div class="bs-example">
     <ul class="nav nav-pills nav-stacked" role="tablist">
-      <li class="nav-item active">
+      <li role="presentation" class="nav-item active">
         <a href="#" class="nav-link">Active</a>
       </li>
-      <li class="nav-item">
+      <li role="presentation" class="nav-item">
         <a href="#" class="nav-link">Link</a>
       </li>
-      <li class="nav-item">
+      <li role="presentation" class="nav-item">
         <a href="#" class="nav-link">Another link</a>
       </li>
-      <li class="nav-item disabled">
+      <li role="presentation" class="nav-item disabled">
         <a href="#" class="nav-link">Disabled</a>
       </li>
     </ul>
   </div>
 {% highlight html %}
 <ul class="nav nav-pills nav-stacked" role="tablist">
-  <li class="nav-item active">
+  <li role="presentation" class="nav-item active">
     <a href="#" class="nav-link">Active</a>
   </li>
-  <li class="nav-item">
+  <li role="presentation" class="nav-item">
     <a href="#" class="nav-link">Link</a>
   </li>
-  <li class="nav-item">
+  <li role="presentation" class="nav-item">
     <a href="#" class="nav-link">Another link</a>
   </li>
-  <li class="nav-item disabled">
+  <li role="presentation" class="nav-item disabled">
     <a href="#" class="nav-link">Disabled</a>
   </li>
 </ul>
@@ -158,10 +158,10 @@
   <h3>Tabs with dropdowns</h3>
   <div class="bs-example">
     <ul class="nav nav-tabs" role="tablist">
-      <li class="nav-item active">
+      <li role="presentation" class="nav-item active">
         <a href="#" class="nav-link">Active</a>
       </li>
-      <li class="nav-item">
+      <li role="presentation" class="nav-item">
         <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#">Dropdown</a>
         <ul class="dropdown-menu" role="menu">
           <li><a href="#">Action</a></li>
@@ -171,10 +171,10 @@
           <li><a href="#">Separated link</a></li>
         </ul>
       </li>
-      <li class="nav-item">
+      <li role="presentation" class="nav-item">
         <a href="#" class="nav-link">Another link</a>
       </li>
-      <li class="nav-item disabled">
+      <li role="presentation" class="nav-item disabled">
         <a href="#" class="nav-link">Disabled</a>
       </li>
     </ul>
@@ -182,7 +182,7 @@
 {% highlight html %}
 <ul class="nav nav-tabs" role="tablist">
   ...
-  <li class="nav-item">
+  <li role="presentation" class="nav-item">
     <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#">
       Dropdown
     </a>
@@ -197,10 +197,10 @@
   <h3>Pills with dropdowns</h3>
   <div class="bs-example">
     <ul class="nav nav-pills" role="tablist">
-      <li class="nav-item active">
+      <li role="presentation" class="nav-item active">
         <a href="#" class="nav-link">Active</a>
       </li>
-      <li class="nav-item">
+      <li role="presentation" class="nav-item">
         <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#">Dropdown</a>
         <ul class="dropdown-menu" role="menu">
           <li><a href="#">Action</a></li>
@@ -221,7 +221,7 @@
 {% highlight html %}
 <ul class="nav nav-pills" role="tablist">
   ...
-  <li class="nav-item">
+  <li role="presentation" class="nav-item">
     <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#">
       Dropdown
     </a>

docs/_includes/css/images.md

@@ -16,7 +16,7 @@ Images in Bootstrap 3 can be made responsive-friendly via the addition of the `.
 
 <div class="bs-callout bs-callout-warning">
   <h4>SVG images and IE 8-10</h4>
-  <p>In Internet Explorer IE 8-10, SVG images with <code>.img-responsive</code> are disproportionately sized. To fix this, add <code>width: 100% \9;</code> where necessary. Bootstrap doesn't apply this automatically as it causes complications to other image formats.</p>
+  <p>In Internet Explorer 8-10, SVG images with <code>.img-responsive</code> are disproportionately sized. To fix this, add <code>width: 100% \9;</code> where necessary. Bootstrap doesn't apply this automatically as it causes complications to other image formats.</p>
 </div>
 
 

docs/_includes/js/collapse.html

@@ -13,7 +13,7 @@
   <p>Using the collapse plugin, we built a simple accordion by extending the panel component.</p>
 
   <div class="bs-example">
-    <div class="panel-group" id="accordion">
+    <div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
       <div class="panel panel-default">
         <div class="panel-heading">
           <h4 class="panel-title">
@@ -22,7 +22,7 @@
             </a>
           </h4>
         </div>
-        <div id="collapseOne" class="panel-collapse collapse in">
+        <div id="collapseOne" class="panel-collapse collapse in" role="tabpanel">
           <div class="panel-body">
             Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
           </div>
@@ -36,7 +36,7 @@
             </a>
           </h4>
         </div>
-        <div id="collapseTwo" class="panel-collapse collapse">
+        <div id="collapseTwo" class="panel-collapse collapse" role="tabpanel">
           <div class="panel-body">
             Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
           </div>
@@ -50,7 +50,7 @@
             </a>
           </h4>
         </div>
-        <div id="collapseThree" class="panel-collapse collapse">
+        <div id="collapseThree" class="panel-collapse collapse" role="tabpanel">
           <div class="panel-body">
             Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
           </div>
@@ -59,7 +59,7 @@
     </div>
   </div><!-- /example -->
 {% highlight html %}
-<div class="panel-group" id="accordion">
+<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
   <div class="panel panel-default">
     <div class="panel-heading">
       <h4 class="panel-title">
@@ -68,7 +68,7 @@
         </a>
       </h4>
     </div>
-    <div id="collapseOne" class="panel-collapse collapse in">
+    <div id="collapseOne" class="panel-collapse collapse in" role="tabpanel">
       <div class="panel-body">
         Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
       </div>
@@ -82,7 +82,7 @@
         </a>
       </h4>
     </div>
-    <div id="collapseTwo" class="panel-collapse collapse">
+    <div id="collapseTwo" class="panel-collapse collapse" role="tabpanel">
       <div class="panel-body">
         Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
       </div>
@@ -96,7 +96,7 @@
         </a>
       </h4>
     </div>
-    <div id="collapseThree" class="panel-collapse collapse">
+    <div id="collapseThree" class="panel-collapse collapse" role="tabpanel">
       <div class="panel-body">
         Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
       </div>

docs/_includes/js/dropdowns.html

@@ -60,8 +60,8 @@
   <h3>Within pills</h3>
   <div class="bs-example">
     <ul class="nav nav-pills" role="tablist">
-      <li class="active"><a href="#">Regular link</a></li>
-      <li class="dropdown">
+      <li role="presentation" class="active"><a href="#">Regular link</a></li>
+      <li role="presentation" class="dropdown">
         <a id="drop4" role="button" data-toggle="dropdown" href="#">Dropdown</a>
         <ul id="menu1" class="dropdown-menu" role="menu" aria-labelledby="drop4">
           <li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Action</a></li>
@@ -71,7 +71,7 @@
           <li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Separated link</a></li>
         </ul>
       </li>
-      <li class="dropdown">
+      <li role="presentation" class="dropdown">
         <a id="drop5" role="button" data-toggle="dropdown" href="#">Dropdown 2</a>
         <ul id="menu2" class="dropdown-menu" role="menu" aria-labelledby="drop5">
           <li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Action</a></li>
@@ -81,7 +81,7 @@
           <li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Separated link</a></li>
         </ul>
       </li>
-      <li class="dropdown">
+      <li role="presentation" class="dropdown">
         <a id="drop6" role="button" data-toggle="dropdown" href="#">Dropdown 3</a>
         <ul id="menu3" class="dropdown-menu" role="menu" aria-labelledby="drop6">
           <li role="presentation"><a role="menuitem" tabindex="-1" href="http://twitter.com/fat">Action</a></li>

docs/_includes/js/tabs.html

@@ -5,9 +5,9 @@
   <p>Add quick, dynamic tab functionality to transition through panes of local content, even via dropdown menus.</p>
   <div class="bs-example bs-example-tabs">
     <ul id="myTab" class="nav nav-tabs" role="tablist">
-      <li class="active"><a href="#home" role="tab" data-toggle="tab">Home</a></li>
-      <li><a href="#profile" role="tab" data-toggle="tab">Profile</a></li>
-      <li class="dropdown">
+      <li role="presentation" class="active"><a href="#home" role="tab" data-toggle="tab">Home</a></li>
+      <li role="presentation"><a href="#profile" role="tab" data-toggle="tab">Profile</a></li>
+      <li role="presentation" class="dropdown">
         <a href="#" id="myTabDrop1" class="dropdown-toggle" data-toggle="dropdown">Dropdown</a>
         <ul class="dropdown-menu" role="menu" aria-labelledby="myTabDrop1">
           <li><a href="#dropdown1" tabindex="-1" role="tab" data-toggle="tab">@fat</a></li>
@@ -16,16 +16,16 @@
       </li>
     </ul>
     <div id="myTabContent" class="tab-content">
-      <div class="tab-pane fade in active" id="home">
+      <div role="tabpanel" class="tab-pane fade in active" id="home">
         <p>Raw denim you probably haven't heard of them jean shorts Austin. Nesciunt tofu stumptown aliqua, retro synth master cleanse. Mustache cliche tempor, williamsburg carles vegan helvetica. Reprehenderit butcher retro keffiyeh dreamcatcher synth. Cosby sweater eu banh mi, qui irure terry richardson ex squid. Aliquip placeat salvia cillum iphone. Seitan aliquip quis cardigan american apparel, butcher voluptate nisi qui.</p>
       </div>
-      <div class="tab-pane fade" id="profile">
+      <div role="tabpanel" class="tab-pane fade" id="profile">
         <p>Food truck fixie locavore, accusamus mcsweeney's marfa nulla single-origin coffee squid. Exercitation +1 labore velit, blog sartorial PBR leggings next level wes anderson artisan four loko farm-to-table craft beer twee. Qui photo booth letterpress, commodo enim craft beer mlkshk aliquip jean shorts ullamco ad vinyl cillum PBR. Homo nostrud organic, assumenda labore aesthetic magna delectus mollit. Keytar helvetica VHS salvia yr, vero magna velit sapiente labore stumptown. Vegan fanny pack odio cillum wes anderson 8-bit, sustainable jean shorts beard ut DIY ethical culpa terry richardson biodiesel. Art party scenester stumptown, tumblr butcher vero sint qui sapiente accusamus tattooed echo park.</p>
       </div>
-      <div class="tab-pane fade" id="dropdown1">
+      <div role="tabpanel" class="tab-pane fade" id="dropdown1">
         <p>Etsy mixtape wayfarers, ethical wes anderson tofu before they sold out mcsweeney's organic lomo retro fanny pack lo-fi farm-to-table readymade. Messenger bag gentrify pitchfork tattooed craft beer, iphone skateboard locavore carles etsy salvia banksy hoodie helvetica. DIY synth PBR banksy irony. Leggings gentrify squid 8-bit cred pitchfork. Williamsburg banh mi whatever gluten-free, carles pitchfork biodiesel fixie etsy retro mlkshk vice blog. Scenester cred you probably haven't heard of them, vinyl craft beer blog stumptown. Pitchfork sustainable tofu synth chambray yr.</p>
       </div>
-      <div class="tab-pane fade" id="dropdown2">
+      <div role="tabpanel" class="tab-pane fade" id="dropdown2">
         <p>Trust fund seitan letterpress, keytar raw denim keffiyeh etsy art party before they sold out master cleanse gluten-free squid scenester freegan cosby sweater. Fanny pack portland seitan DIY, art party locavore wolf cliche high life echo park Austin. Cred vinyl keffiyeh DIY salvia PBR, banh mi before they sold out farm-to-table VHS viral locavore cosby sweater. Lomo wolf viral, mustache readymade thundercats keffiyeh craft beer marfa ethical. Wolf salvia freegan, sartorial keffiyeh echo park vegan.</p>
       </div>
     </div>
@@ -61,18 +61,18 @@ $('#myTab li:eq(2) a').tab('show') // Select third tab (0-indexed)
 {% highlight html %}
 <!-- Nav tabs -->
 <ul class="nav nav-tabs" role="tablist">
-  <li class="active"><a href="#home" role="tab" data-toggle="tab">Home</a></li>
-  <li><a href="#profile" role="tab" data-toggle="tab">Profile</a></li>
-  <li><a href="#messages" role="tab" data-toggle="tab">Messages</a></li>
-  <li><a href="#settings" role="tab" data-toggle="tab">Settings</a></li>
+  <li role="presentation" class="active"><a href="#home" role="tab" data-toggle="tab">Home</a></li>
+  <li role="presentation"><a href="#profile" role="tab" data-toggle="tab">Profile</a></li>
+  <li role="presentation"><a href="#messages" role="tab" data-toggle="tab">Messages</a></li>
+  <li role="presentation"><a href="#settings" role="tab" data-toggle="tab">Settings</a></li>
 </ul>
 
 <!-- Tab panes -->
 <div class="tab-content">
-  <div class="tab-pane active" id="home">...</div>
-  <div class="tab-pane" id="profile">...</div>
-  <div class="tab-pane" id="messages">...</div>
-  <div class="tab-pane" id="settings">...</div>
+  <div role="tabpanel" class="tab-pane active" id="home">...</div>
+  <div role="tabpanel" class="tab-pane" id="profile">...</div>
+  <div role="tabpanel" class="tab-pane" id="messages">...</div>
+  <div role="tabpanel" class="tab-pane" id="settings">...</div>
 </div>
 {% endhighlight %}
 
@@ -80,10 +80,10 @@ $('#myTab li:eq(2) a').tab('show') // Select third tab (0-indexed)
   <p>To make tabs fade in, add <code>.fade</code> to each <code>.tab-pane</code>. The first tab pane must also have <code>.in</code> to properly fade in initial content.</p>
 {% highlight html %}
 <div class="tab-content">
-  <div class="tab-pane fade in active" id="home">...</div>
-  <div class="tab-pane fade" id="profile">...</div>
-  <div class="tab-pane fade" id="messages">...</div>
-  <div class="tab-pane fade" id="settings">...</div>
+  <div role="tabpanel" class="tab-pane fade in active" id="home">...</div>
+  <div role="tabpanel" class="tab-pane fade" id="profile">...</div>
+  <div role="tabpanel" class="tab-pane fade" id="messages">...</div>
+  <div role="tabpanel" class="tab-pane fade" id="settings">...</div>
 </div>
 {% endhighlight %}
 
@@ -94,17 +94,17 @@ $('#myTab li:eq(2) a').tab('show') // Select third tab (0-indexed)
   </p>
 {% highlight html %}
 <ul class="nav nav-tabs" role="tablist" id="myTab">
-  <li class="active"><a href="#home" role="tab" data-toggle="tab">Home</a></li>
-  <li><a href="#profile" role="tab" data-toggle="tab">Profile</a></li>
-  <li><a href="#messages" role="tab" data-toggle="tab">Messages</a></li>
-  <li><a href="#settings" role="tab" data-toggle="tab">Settings</a></li>
+  <li role="presentation" class="active"><a href="#home" role="tab" data-toggle="tab">Home</a></li>
+  <li role="presentation"><a href="#profile" role="tab" data-toggle="tab">Profile</a></li>
+  <li role="presentation"><a href="#messages" role="tab" data-toggle="tab">Messages</a></li>
+  <li role="presentation"><a href="#settings" role="tab" data-toggle="tab">Settings</a></li>
 </ul>
 
 <div class="tab-content">
-  <div class="tab-pane active" id="home">...</div>
-  <div class="tab-pane" id="profile">...</div>
-  <div class="tab-pane" id="messages">...</div>
-  <div class="tab-pane" id="settings">...</div>
+  <div role="tabpanel" class="tab-pane active" id="home">...</div>
+  <div role="tabpanel" class="tab-pane" id="profile">...</div>
+  <div role="tabpanel" class="tab-pane" id="messages">...</div>
+  <div role="tabpanel" class="tab-pane" id="settings">...</div>
 </div>
 
 <script>

docs/dist/js/bootstrap.js

@@ -1436,7 +1436,7 @@ if (typeof jQuery === 'undefined') { throw new Error('Bootstrap\'s JavaScript re
     var isBody = el.tagName == 'BODY'
     var isSvg  = window.SVGElement && el instanceof window.SVGElement
 
-    var elRect    = typeof el.getBoundingClientRect == 'function' ? el.getBoundingClientRect() : null
+    var elRect    = el.getBoundingClientRect ? el.getBoundingClientRect() : null
     var elOffset  = isBody ? { top: 0, left: 0 } : $element.offset()
     var scroll    = { scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop() }
     var outerDims = isSvg ? {} : {

docs/examples/jumbotron-narrow/index.html

@@ -25,9 +25,9 @@
     <div class="container">
       <div class="header">
         <ul class="nav nav-pills pull-right" role="tablist">
-          <li class="active"><a href="#">Home</a></li>
-          <li><a href="#">About</a></li>
-          <li><a href="#">Contact</a></li>
+          <li role="presentation" class="active"><a href="#">Home</a></li>
+          <li role="presentation"><a href="#">About</a></li>
+          <li role="presentation"><a href="#">Contact</a></li>
         </ul>
         <h3 class="text-muted">Project name</h3>
       </div>