img

1 files changed, 3 insertions, 1 deletions

diff --git a/img/better_disp.lua b/img/better_disp.lua
index c278396..77b5aa0 100644
--- a/img/better_disp.lua
+++ b/img/better_disp.lua
@@ -85,7 +85,9 @@ local function adjust_to_2_colors(R,gromlings,pdists)
 
 		-- todo: be cleverer when deciding whether to merge a into b, or b into a
 		-- currently just merge b into a
-		assert(best_a and best_b and best_a ~= best_b)
+		assert(best_a,"no best_a")
+		assert(best_b,"no best_b")
+		assert(best_a ~= best_b,"best a and b are the same")
 		all_current_colors[best_b] = false
 		ncolors=ncolors-1
 		for gidx,col in ipairs(gromling_colors) do