fix line widgets added to same line getting stuck

node_modules/ace/lib/ace/ext/error_marker.js

@@ -98,7 +98,9 @@ exports.showErrorMarker = function(editor, dir) {
     
     var pos = editor.getCursorPosition();
     var row = pos.row;
-    var oldWidget = session.lineWidgets && session.lineWidgets[row];
+    var oldWidget = session.widgetManager.getWidgetsAtRow(row).filter(function(w) {
+        return w.type == "errorMarker";
+    })[0];
     if (oldWidget) {
         oldWidget.destroy();
     } else {
@@ -128,7 +130,8 @@ exports.showErrorMarker = function(editor, dir) {
         row: pos.row, 
         fixedWidth: true,
         coverGutter: true,
-        el: dom.createElement("div")
+        el: dom.createElement("div"),
+        type: "errorMarker"
     };
     var el = w.el.appendChild(dom.createElement("div"));
     var arrow = w.el.appendChild(dom.createElement("div"));

node_modules/ace/lib/ace/line_widgets.js

@@ -171,6 +171,10 @@ function LineWidgets(session) {
             if (w) {
                 noWidgets = false;
                 w.row = i;
+                while (w.$oldWidget) {
+                    w.$oldWidget.row = i;
+                    w = w.$oldWidget;
+                }
             }
         });
         if (noWidgets)
@@ -181,6 +185,15 @@ function LineWidgets(session) {
         if (!this.session.lineWidgets)
             this.session.lineWidgets = new Array(this.session.getLength());
         
+        var old = this.session.lineWidgets[w.row];
+        if (old) {
+            w.$oldWidget = old;
+            if (old.el && old.el.parentNode) {
+                old.el.parentNode.removeChild(old.el);
+                old._inDocument = false;
+            }
+        }
+            
         this.session.lineWidgets[w.row] = w;
         
         var renderer = this.editor.renderer;
@@ -231,12 +244,37 @@ function LineWidgets(session) {
         if (w.editor && w.editor.destroy) try {
             w.editor.destroy();
         } catch(e){}
-        if (this.session.lineWidgets)
-            this.session.lineWidgets[w.row] = undefined;
+        if (this.session.lineWidgets) {
+            var w1 = this.session.lineWidgets[w.row]
+            if (w1 == w) {
+                this.session.lineWidgets[w.row] = w.$oldWidget;
+                if (w.$oldWidget)
+                    this.onWidgetChanged(w.$oldWidget);
+            } else {
+                while (w1) {
+                    if (w1.$oldWidget == w) {
+                        w1.$oldWidget = w.$oldWidget;
+                        break;
+                    }
+                    w1 = w1.$oldWidget;
+                }
+            }
+        }
         this.session._emit("changeFold", {data:{start:{row: w.row}}});
         this.$updateRows();
     };
     
+    this.getWidgetsAtRow = function(row) {
+        var lineWidgets = this.session.lineWidgets;
+        var w = lineWidgets && lineWidgets[row];
+        var list = [];
+        while (w) {
+            list.push(w)
+            w = w.$oldWidget;
+        }
+        return list;
+    };
+    
     this.onWidgetChanged = function(w) {
         this.session._changedWidgets.push(w);
         this.editor && this.editor.renderer.updateFull();
@@ -250,7 +288,7 @@ function LineWidgets(session) {
         var min = Infinity;
         for (var i = 0; i < changedWidgets.length; i++) {
             var w = changedWidgets[i];
-            if (!w.el) continue;
+            if (!w || !w.el) continue;
             if (!w._inDocument) {
                 w._inDocument = true;
                 renderer.container.appendChild(w.el);