Also pause the watcher on deletions to avoid triggering more than one…

… warning dialog.

app/renderer/abr-document.js

@@ -390,6 +390,8 @@ AbrDocument.prototype = {
                             that.startWatcher();
                         });
                     } else {
+                        // The previous document is dropped from the editor.
+                        // The watcher will resume on save.
                         that.setDirty();
                         that.updateWindowTitle();
                     }
@@ -399,19 +401,22 @@ AbrDocument.prototype = {
                     if (keepFile) {
                         that.setDirty();
                         that.updateWindowTitle();
+                        that.startWatcher();
                     } else {
-                        that.pauseWatcher();
                         that.clear();
                     }
                 });
             }
         };
         this.watcher = files.createWatcher(this.path, {
             change: function (path) {
+                // Pause the watcher to avoid triggering multiple warning dialogs
+                // while the first one is being handled.
                 that.pauseWatcher();
                 runOnFocus(handleAsyncFileChange, path);
             },
             unlink: function (path) {
+                that.pauseWatcher();
                 runOnFocus(handleAsyncFileChange, path);
             },
             error: function (err) {