From d39a7512804f860a20319c181613771a79a9ea4e Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Thu, 16 Apr 2015 22:51:22 +0200
Subject: patch 7.4.702 Problem:    Joining an empty list does uneccessary
 work. Solution:   Let join() return early. (Marco Hinz)

---
 src/eval.c    | 2 ++
 src/version.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/src/eval.c b/src/eval.c
index f9df76350..b80762e12 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -6780,6 +6780,8 @@ list_join(gap, l, sep, echo_style, copyID)
     join_T	*p;
     int		i;
 
+    if (l->lv_len < 1)
+	return OK; /* nothing to do */
     ga_init2(&join_ga, (int)sizeof(join_T), l->lv_len);
     retval = list_join_inner(gap, l, sep, echo_style, copyID, &join_ga);
 
diff --git a/src/version.c b/src/version.c
index 3f913caf9..0f02ea8ff 100644
--- a/src/version.c
+++ b/src/version.c
@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    702,
 /**/
     701,
 /**/
-- 
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