commit e5c421cfd70a4d864faa0fac4e9f2dd6cdf5881d
author Bram Moolenaar <Bram@vim.org> Tue Mar 31 13:33:08 2015 +0200
committer Bram Moolenaar <Bram@vim.org> Tue Mar 31 13:33:08 2015 +0200
tree 77b845e567cd28c87bf4e9226384cccf04ab645b
parent 1ca2e361a869c58a775b5fabb2aaf4e2675ea7ba

updated for version 7.4.684
Problem:    When starting several Vim instances in diff mode, the temp files
            used may not be unique. (Issue 353)
Solution:   Add an argument to vim_tempname() to keep the file.

src/misc1.c

diff --git a/src/misc1.c b/src/misc1.c
index bd1fe25..5a34513 100644
--- a/src/misc1.c
+++ b/src/misc1.c
@@ -11049,7 +11049,7 @@
 	return NULL;
 
     /* get a name for the temp file */
-    if ((tempname = vim_tempname('o')) == NULL)
+    if ((tempname = vim_tempname('o', FALSE)) == NULL)
     {
 	EMSG(_(e_notmp));
 	return NULL;