3824 - experiment: stop buffering in termbox

Now it's much more apparent why things are slow. You can see each repaint
happening. Already I fixed one performance bug -- in clear-rest-of-screen.

Since this subverts Mu's fake screen there may be bugs.

Another salubrious side effect: I've finally internalized that switching
to raw mode doesn't have to clear the screen. That was just an artifact
of how termbox abstracted operations. Now I can conceive of using termbox
to build a repl as well.

(I was inspired to poke into termbox internals by
http://viewsourcecode.org/snaptoken/kilo and
https://github.com/antirez/linenoise)

1 files changed, 0 insertions, 3 deletions

diff --git a/edit/010-sandbox-trace.mu b/edit/010-sandbox-trace.mu
index 65337127..8088577a 100644
--- a/edit/010-sandbox-trace.mu
+++ b/edit/010-sandbox-trace.mu
@@ -200,11 +200,8 @@ after <global-touch> [
     x:bool <- get *sandbox, display-trace?:offset
     x <- not x
     *sandbox <- put *sandbox, display-trace?:offset, x
-    hide-screen screen
     screen <- render-sandbox-side screen, env, render
     screen <- update-cursor screen, recipes, current-sandbox, sandbox-in-focus?, env
-    # no change in cursor
-    show-screen screen
     loop +next-event
   }
 ]