client/posts: show ! in title for similar posts

client/js/util/views.js

@@ -282,11 +282,15 @@ function showMessage(target, message, className) {
     return true;
 }
 
-function showError(target, message) {
+function appendExclamationMark() {
     if (!document.title.startsWith('!')) {
         document.oldTitle = document.title;
         document.title = `! ${document.title}`;
     }
+}
+
+function showError(target, message) {
+    appendExclamationMark();
     return showMessage(target, misc.formatInlineMarkdown(message), 'error');
 }
 
@@ -508,6 +512,7 @@ module.exports = {
     slideUp:               slideUp,
     monitorNodeRemoval:    monitorNodeRemoval,
     clearMessages:         clearMessages,
+    appendExclamationMark: appendExclamationMark,
     showError:             showError,
     showSuccess:           showSuccess,
     showInfo:              showInfo,

client/js/views/post_upload_view.js

@@ -197,6 +197,7 @@ class PostUploadView extends events.EventTarget {
 
     showInfo(message, uploadable) {
         this._showMessage(views.showInfo, message, uploadable);
+        views.appendExclamationMark();
     }
 
     _showMessage(functor, message, uploadable) {