From ba0a7475c52ea0ba9e083934bd328fbcbfa8d532 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Sun, 22 Dec 2019 16:09:06 +0100
Subject: patch 8.2.0031: MS-Windows: test for empty job fails

Problem:    MS-Windows: test for empty job fails
Solution:   Check for error message, make it also fail on Unix.
---
 src/channel.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

(limited to 'src/channel.c')

diff --git a/src/channel.c b/src/channel.c
index aed234c3ac..f1c2ccd338 100644
--- a/src/channel.c
+++ b/src/channel.c
@@ -5943,11 +5943,19 @@ job_start(
 
 	if (build_argv_from_list(l, &argv, &argc) == FAIL)
 	    goto theend;
-#ifndef USE_ARGV
+
+	// Empty command is invalid.
+#ifdef USE_ARGV
+	if (argc == 0 || *skipwhite((char_u *)argv[0]) == NUL)
+	{
+	    emsg(_(e_invarg));
+	    goto theend;
+	}
+#else
 	if (win32_build_cmd(l, &ga) == FAIL)
 	    goto theend;
 	cmd = ga.ga_data;
-	if (cmd == NULL)
+	if (cmd == NULL || *skipwhite(cmd) == NUL)
 	{
 	    emsg(_(e_invarg));
 	    goto theend;
-- 
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