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-rw-r--r--edit.lua15
1 files changed, 4 insertions, 11 deletions
diff --git a/edit.lua b/edit.lua
index 232d9b9..c8d5a03 100644
--- a/edit.lua
+++ b/edit.lua
@@ -80,7 +80,7 @@ function edit.initialize_state(top, left, right, font_height, line_height)  -- c
     cursor_x = 0,
     cursor_y = 0,
 
-    current_drawing_mode = 'line',
+    current_drawing_mode = 'line',  -- one of the available shape modes
     previous_drawing_mode = nil,  -- extra state for some ephemeral modes like moving/deleting/naming points
 
     font_height = font_height,
@@ -157,14 +157,8 @@ end
 function edit.draw(State)
   State.button_handlers = {}
   App.color(Text_color)
-  if #State.lines ~= #State.line_cache then
-    print(('line_cache is out of date; %d when it should be %d'):format(#State.line_cache, #State.lines))
-    assert(false)
-  end
-  if not Text.le1(State.screen_top1, State.cursor1) then
-    print(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)
-    assert(false)
-  end
+  assert(#State.lines == #State.line_cache, ('line_cache is out of date; %d elements when it should be %d'):format(#State.line_cache, #State.lines))
+  assert(Text.le1(State.screen_top1, State.cursor1), ('screen_top (line=%d,pos=%d) is below cursor (line=%d,pos=%d)'):format(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos))
   State.cursor_x = nil
   State.cursor_y = nil
   local y = State.top
@@ -204,8 +198,7 @@ function edit.draw(State)
       Drawing.draw(State, line_index, y)
       y = y + Drawing.pixels(line.h, State.width) + Drawing_padding_bottom
     else
-      print(line.mode)
-      assert(false)
+      assert(false, ('unknown line mode %s'):format(line.mode))
     end
   end
   State.screen_bottom1 = screen_bottom1