[Bug-zile] [PATCH] refactor: redisplay only when there's no typeahead buffered.

[Gary V. Vaughan]

From: "Gary V. Vaughan" <address@hidden>

Preliminary patch to cut time spent catching up with typeahead
by 90% or so.

Before committing, it would be nice to find why the display always
shows just the last half-dozen lines of any large paste at the top
of the window, where prior to this patch that is not always the
case...

* src/main.c (main): don't redisplay after every key command.
* src/getkey.c (getkey): do redisplay if there are no keys left
in the typeahead buffer.
---
 src/getkey.c |   11 ++++++++++-
 src/main.c   |    6 ------
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/src/getkey.c b/src/getkey.c
index 0eafb72..130e60f 100644
--- a/src/getkey.c
+++ b/src/getkey.c
@@ -42,7 +42,16 @@ lastkey (void)
 size_t
 getkey (int mode)
 {
-  _last_key = term_getkey (mode);
+  _last_key = term_getkey (0);
+
+  if (_last_key == KBD_NOKEY)
+    {
+      if (lastflag & FLAG_NEED_RESYNC)
+        resync_redisplay (cur_wp);
+      term_redisplay ();
+      term_refresh ();
+      _last_key = term_getkey (mode);
+    }
 
   if (thisflag & FLAG_DEFINING_MACRO)
     add_key_to_cmd (_last_key);
diff --git a/src/main.c b/src/main.c
index 08eb065..ab2173b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -336,13 +336,7 @@ main (int argc, char **argv)
 
   /* Run the main loop. */
   while (!(thisflag & FLAG_QUIT))
-    {
-      if (lastflag & FLAG_NEED_RESYNC)
-        resync_redisplay (cur_wp);
-      term_redisplay ();
-      term_refresh ();
       get_and_run_command ();
-    }
 
   /* Tidy and close the terminal. */
   term_finish ();
-- 
1.7.10.2