commit cb574f415486adff645ce384979bfecf27f5be8c
author Bram Moolenaar <Bram@vim.org> Fri Jan 25 22:29:57 2019 +0100
committer Bram Moolenaar <Bram@vim.org> Fri Jan 25 22:29:57 2019 +0100
tree 7e3ffdb38c38d7b8c1c2c30bfbd9c86e369749ff
parent 970f5d39f27717b1a529b7b250a8ed7c3f791949

patch 8.1.0822: peeking and flushing output slows down execution

Problem:    Peeking and flushing output slows down execution.
Solution:   Do not update the mode message when global_busy is set.  Do not
            flush when only peeking for a character. (Ken Takata)

src/edit.c

diff --git a/src/edit.c b/src/edit.c
index 92dbf4c..f797d7f 100644
--- a/src/edit.c
+++ b/src/edit.c
@@ -8722,7 +8722,7 @@
      */
     if (reg_recording != 0 || restart_edit != NUL)
 	showmode();
-    else if (p_smd)
+    else if (p_smd && !skip_showmode())
 	msg("");
 
     return TRUE;	    /* exit Insert mode */