Last modified: 2014-03-21 00:02:02 UTC
It is quite easy to create two adjacent lists that appear to be one list (but for a small amount of extra spacing) through copy/paste or deletion. More often than not this is not what the user means semantically, so such a situation should be highlighted to the user and they should be given an easy way to fixup the code. I have yet to see an editor which does this well, but that shouldn't stop us being the first.