patch 8.0.1263: others can read the swap file if a user is careless
Problem: Others can read the swap file if a user is careless with his
primary group.
Solution: If the group permission allows for reading but the world
permissions doesn't, make sure the group is right.
diff --git a/src/Makefile b/src/Makefile
index e55e830..48487aa 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2259,6 +2259,7 @@
test_stat \
test_statusline \
test_substitute \
+ test_swap \
test_syn_attr \
test_syntax \
test_system \