Fix the ' command crashing

akhodakivskiy · Sep 26, 2016 · d65cc71 · d65cc71
1 parent bb19436
commit d65cc71
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/extension/lib/commands.coffee b/extension/lib/commands.coffee
@@ -183,7 +183,7 @@ helper_scroll = (vim, event, args...) ->
     ), vim.options['scroll.reset_timeout'])
 
   helpScroll = help.getHelp(vim.window)?.querySelector('.wrapper')
-  if vim.isUIEvent(event) or helpScroll
+  if (event and vim.isUIEvent(event)) or helpScroll
     activeElement = helpScroll or utils.getActiveElement(vim.window)
     if vim._state.scrollableElements.has(activeElement) or helpScroll
       viewportUtils.scroll(activeElement, options)