I seem to often accidentally press C-n twice to go into name mode. Now doing so overrides the previous temporary mode (name/move/delete point) without clobbering the real shape-drawing mode.
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Previous_drawing_mode = Current_drawing_mode
if Previous_drawing_mode == nil then Previous_drawing_mode = Current_drawing_mode end
if Previous_drawing_mode == nil then
end
if Previous_drawing_mode == nil then -- don't clobber Previous_drawing_mode = Current_drawing_mode end
-- don't clobber