Fixing copy code functionality for bash command

docs/_static/js/copycode.js

@@ -1,8 +1,8 @@
 /*Copy code to clipboard*/
-LANG_GP = {'default':'>>> ', 'python':'>>> ' , 'scala':'scala>', 'julia':'julia> ', 'r':'> ', 'perl':'pdl>' , 'cpp':'', 'bash':''};
+LANG_GP = {'default':'>>> ', 'python':'>>> ' , 'scala':'scala>', 'julia':'julia> ', 'r':'> ', 'perl':'pdl>' , 'cpp':'', 'bash':'$ '};
 
 function addBtn() {
-    copyBtn = '<button type="button" class="btn btn-primary copy-btn" data-toggle="tooltip"' + 
+    copyBtn = '<button type="button" class="btn btn-primary copy-btn" data-toggle="tooltip"' +
               'data-placement="bottom" title="Copy to clipboard"><i class="fa fa-copy"></i></button>'
     for (var lang in LANG_GP) {
         codeBlock = $('div .highlight-' + lang);
@@ -24,10 +24,10 @@ function html2clipboard(content) {
     tmpEl.style.position = "absolute";
     tmpEl.style.pointerEvents = "none";
     tmpEl.style.zIndex = -1;
-    
+
     tmpEl.innerHTML = content;
     document.body.appendChild(tmpEl);
-    
+
     var range = document.createRange();
     range.selectNode(tmpEl);
     window.getSelection().addRange(range);
@@ -43,28 +43,28 @@ $(document).ready(function(){
         $(this).attr('title', 'Copy to clipboard').tooltip('fixTitle');
       }
     );
-    
+
     clipboard = new Clipboard('.copy-btn', {
         target: function(trigger) {
             return trigger.parentNode.querySelector('.highlight');
         }
     });
-    
+
     clipboard.on('success', function(e) {
         //Deal with codes with leading gap
         var btnClass = e.trigger.classList;
         var lang = btnClass[btnClass.length - 1];
         var lines = e.text.split('\n');
         var hasGap = false;
         var continueSign = '...';
-        
+
         e.clearSelection();
-        
+
         for(var i = 0; i < lines.length; ++i) {
             lines[i] = lines[i].replace(/^\s+|\s+$/g, "");
             if(!hasGap && lines[i].startsWith(LANG_GP[lang])) hasGap = true;
         }
-        
+
         if(hasGap) {
             var content = '';
             for(var i = 0; i < lines.length; ++i) {
@@ -81,10 +81,10 @@ $(document).ready(function(){
              .tooltip('fixTitle')
              .tooltip('show');
     });
-    
+
     clipboard.on('error', function(e) {
         $(e.trigger).attr('title', 'Copy failed. Try again.')
              .tooltip('fixTitle')
              .tooltip('show');
     });
-});
+});