Ohm doesn't play well without comment module being enabled

Yep, confirmed. @splatio? Want to provide a fix? Probably just means to check for the comment variables in the node preprocessor?

I encountered the exact same problem as I was working on my website. It appears that #2042437: Undefined index: comment_count in ohm_preprocess_node() fixed the problem, but did not cover all cases.

Attached is a patch that uses a different way, !empty($node->comment_count), to detect the existence of comment_count. I borrowed this method from node_title_list() in module/node/node.module in Drupal 7 core, and it seems to work well here.

A side effect: "Comments (0)" is no more. That part would only be displayed if there is at least one comment posted for that node.

What you wrote there is the exact same logic just with different (nicer) code.

isset($foo) && $foo === !empty($foo)

;)

I think having "Comments (0)" is something we should try to retain. So we need a different solution. I am sure there is a better way. Will look into it tomorrow unless you want to try again Anthony? :)

Thanks for the encouragement, and the big hint that you gave me. ;-)
The patch is now revised to keep "Comments (0)".
Please review. Many thanks!

Sorry, I made a huge "Brown Paper Bag" mistake... I updated my test theme without actually updating the copy in the git tree before making the patch... (very embarrassed) ;-)

Here is the patch again. Thanks!

Another revised patch that (I hope) follows the DRY principle better. :-)

Looks good. Did not test it though. Does this work now in all situations?

Yes, it works well here on my computer. Perhaps other people can help test it too.

Committed, thanks.