From 1572e30607e9a3bee9750242bf37168f7d2b6e66 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Sat, 25 Mar 2017 20:16:28 +0100
Subject: [PATCH] patch 8.0.0512: check for available characters takes too long

Problem:    Check for available characters takes too long.
Solution:   Only check did_start_blocking if wtime is negative. (Daisuke
            Suzuki, closes #1591)
---
 src/os_unix.c | 2 +-
 src/version.c | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/os_unix.c b/src/os_unix.c
index f0a5621724..c78e7bf967 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -511,7 +511,7 @@ mch_inchar(
 		|| interrupted
 #endif
 		|| wait_time > 0
-		|| !did_start_blocking)
+		|| (wtime < 0 && !did_start_blocking))
 	    continue;
 
 	/* no character available or interrupted */
diff --git a/src/version.c b/src/version.c
index 7d2cf27584..3ebe8a6f9d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    512,
 /**/
     511,
 /**/