From c1a3d289d69b93092247e0eca3bf4b43992791a1 Mon Sep 17 00:00:00 2001
From: Marco Hinz <mh.codebro@gmail.com>
Date: Thu, 16 Apr 2015 14:08:37 +0200
Subject: Eval: do not join a list if it's empty anyway #2441

This spares some work and also prevents list_join() from calling ga_init()
with a growsize of 0 which would lead to the nvimlog being littered with:

  [warning @ ga_set_growsize:64] 17675 - trying to set an invalid ga_growsize: 0

Also in Vim 7.4.702
  https://github.com/vim/vim/commit/5216f767d4070d0085de6fa1391e6f2991c1baa5
---
 src/nvim/eval.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/nvim/eval.c')

diff --git a/src/nvim/eval.c b/src/nvim/eval.c
index 1dab9df9cb..d6a8351330 100644
--- a/src/nvim/eval.c
+++ b/src/nvim/eval.c
@@ -5418,6 +5418,10 @@ list_join_inner (
  */
 static int list_join(garray_T *gap, list_T *l, char_u *sep, int echo_style, int copyID)
 {
+  if (l->lv_len < 1) {
+    return OK;
+  }
+
   garray_T join_ga;
   int retval;
 
-- 
cgit