reduced redraw to two draw calls, four colour calls, and one get call: draw line, get character, invert colours for cell

module/buffer.lua

@@ -261,14 +261,7 @@ function buffer:read(...)
    io.write("\27[s\27[8m")
    local pos, buffer = 1, ""
    local function redraw()
-    io.write("\27[u")
-    io.write(buffer.." ")
-    if pos < 1 then
-     io.write("\28[D")
-    else
-     io.write("\27[u")
-     io.write(buffer:sub(1,(#buffer-pos)+1))
-    end
+    io.write("\27[u"..buffer.." \27[u\27["..tostring((#buffer-pos)+1).."C")
    end
    while true do
     char = readBytesOrChars(1)