@@ -242,7 +242,7 @@ serialize_output_ops dc start_ptr in_fattr diffs ops = do
242242 serialize_output_ops' ( y, out_ptr, fattr, False : diffs' ) _span_ops
243243 = return ( y + 1, out_ptr, fattr, diffs' )
244244 serialize_output_ops' (_y, _out_ptr, _fattr, [] ) _span_ops
245− = error "shouldn't be possible"
245+ = error "vty - output spans without a corresponding diff."
246246
247247serialize_span_ops :: DisplayContext
248248 -> Int
@@ -345,4 +345,3 @@ limit_attr_for_display t attr
345345 = let p :: Double = fromIntegral v / 240.0
346346 v' = floor $ p * (fromIntegral $ context_color_count t)
347347 in SetTo $ Color240 v'
348−