gistfile1.txt

-- Unless I'm mistaken the default line	width is 1, presumably pixels. Straight                                                                                                                                                                
-- one-pixel lines are invisible in my setup.                                                                                                                                                                                                  
function love.draw()
   -- Invisible                                                                                                                                                                                                                                
   love.graphics.setLineWidth(1)
   love.graphics.rectangle("line", 64, 64, 32, 32)

   -- Visible                                                                                                                                                                                                                                  
   love.graphics.setLineWidth(2)
   love.graphics.rectangle("line", 0, 0, 32, 32)
end

-- I'm using                                                                                                                                                                                                                                   
--                                                                                                                                                                                                                                             
--     $ love --version                                                                                                                                                                                                                        
--     LOVE 0.7.2 (Game Slave)                                                                                                                                                                                                                 
--                                                                                                                                                                                                                                             
-- on a Debian Testing system, installed right out of Debian's repo.