Update CodeMirror to 5.19.0 and rename jade to pug

public/vendor/codemirror/addon/search/match-highlighter.js

@@ -45,6 +45,7 @@
       this.options[name] = (options && options.hasOwnProperty(name) ? options : defaults)[name]
     this.overlay = this.timeout = null;
     this.matchesonscroll = null;
+    this.active = false;
   }
 
   CodeMirror.defineOption("highlightSelectionMatches", false, function(cm, val, old) {
@@ -53,16 +54,34 @@
       clearTimeout(cm.state.matchHighlighter.timeout);
       cm.state.matchHighlighter = null;
       cm.off("cursorActivity", cursorActivity);
+      cm.off("focus", onFocus)
     }
     if (val) {
-      cm.state.matchHighlighter = new State(val);
-      highlightMatches(cm);
+      var state = cm.state.matchHighlighter = new State(val);
+      if (cm.hasFocus()) {
+        state.active = true
+        highlightMatches(cm)
+      } else {
+        cm.on("focus", onFocus)
+      }
       cm.on("cursorActivity", cursorActivity);
     }
   });
 
   function cursorActivity(cm) {
     var state = cm.state.matchHighlighter;
+    if (state.active || cm.hasFocus()) scheduleHighlight(cm, state)
+  }
+
+  function onFocus(cm) {
+    var state = cm.state.matchHighlighter
+    if (!state.active) {
+      state.active = true
+      scheduleHighlight(cm, state)
+    }
+  }
+
+  function scheduleHighlight(cm, state) {
     clearTimeout(state.timeout);
     state.timeout = setTimeout(function() {highlightMatches(cm);}, state.options.delay);
   }

public/vendor/codemirror/addon/search/search.js

@@ -136,8 +136,11 @@
         })
       };
       persistentDialog(cm, queryDialog, q, searchNext, function(event, query) {
-        var cmd = CodeMirror.keyMap[cm.getOption("keyMap")][CodeMirror.keyName(event)];
-        if (cmd == "findNext" || cmd == "findPrev") {
+        var keyName = CodeMirror.keyName(event)
+        var cmd = CodeMirror.keyMap[cm.getOption("keyMap")][keyName]
+        if (!cmd) cmd = cm.getOption('extraKeys')[keyName]
+        if (cmd == "findNext" || cmd == "findPrev" ||
+          cmd == "findPersistentNext" || cmd == "findPersistentPrev") {
           CodeMirror.e_stop(event);
           startSearch(cm, getSearchState(cm), query);
           cm.execCommand(cmd);
@@ -146,7 +149,7 @@
           searchNext(query, event);
         }
       });
-      if (immediate) {
+      if (immediate && q) {
         startSearch(cm, state, q);
         findNext(cm, rev);
       }