From d8811fb0200792abc363d9e0ff1ceea44617ec71 Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Fri, 4 Sep 2015 20:19:40 -0700
Subject: linenoise: tty read fix.

* linenoise/linenoise.c (edit): If 0 bytes is read from the
tty for any reason, return -1 so that the linenoise function
will return a null pointer rather than a blank line.
---
 linenoise/linenoise.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/linenoise/linenoise.c b/linenoise/linenoise.c
index bdffcfff..3d596bd9 100644
--- a/linenoise/linenoise.c
+++ b/linenoise/linenoise.c
@@ -760,7 +760,8 @@ static int edit(int stdin_fd, int stdout_fd, char *buf, size_t buflen, const cha
         char seq[3];
 
         nread = read(l.ifd,&c,1);
-        if (nread <= 0) return l.len;
+        if (nread <= 0)
+            return l.len ? l.len : -1;
 
         /* Only autocomplete when the callback is set. It returns < 0 when
          * there was an error reading from fd. Otherwise it will return the
-- 
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