1 files changed, 3 insertions, 2 deletions
diff --git a/app/assets/javascripts/lib/utils/text_utility.js b/app/assets/javascripts/lib/utils/text_utility.js
index b6636de5767..d761a844be9 100644
--- a/app/assets/javascripts/lib/utils/text_utility.js
+++ b/app/assets/javascripts/lib/utils/text_utility.js
@@ -29,6 +29,7 @@
       lineBefore = this.lineBefore(text, textArea);
       lineAfter = this.lineAfter(text, textArea);
       if (lineBefore === blockTag && lineAfter === blockTag) {
+        // To remove the block tag we have to select the line before & after
         if (blockTag != null) {
           textArea.selectionStart = textArea.selectionStart - (blockTag.length + 1);
           textArea.selectionEnd = textArea.selectionEnd + (blockTag.length + 1);
@@ -63,11 +64,11 @@
       if (!inserted) {
         try {
           document.execCommand("ms-beginUndoUnit");
-        } catch (undefined) {}
+        } catch (error) {}
         textArea.value = this.replaceRange(text, textArea.selectionStart, textArea.selectionEnd, insertText);
         try {
           document.execCommand("ms-endUndoUnit");
-        } catch (undefined) {}
+        } catch (error) {}
       }
       return this.moveCursor(textArea, tag, wrap);
     };