tnelson/Margrave — Issue #81: Error msg when constant used as variable: 
Author: tnelson
Created: 2012-01-09 04:15:23+00:00
State: open
Labels: FOR-3.1

If I write (= x c) instead of (= x 'c), Margrave gives the unhelpful error: The query formula had a free variable undecided that was not declared or typed." without any location info. It should name the term in question and highlight it in the UI.