Avoid that running tests changes viminfo.
diff --git a/src/testdir/test29.in b/src/testdir/test29.in
index 829961c..6c7d3d5 100644
--- a/src/testdir/test29.in
+++ b/src/testdir/test29.in
@@ -4,7 +4,7 @@
and with 'cpoptions' flag 'j' set or not
STARTTEST
-:set nocompatible
+:set nocompatible viminfo+=nviminfo
:set nojoinspaces
:set cpoptions-=j
/firstline/
diff --git a/src/testdir/test72.in b/src/testdir/test72.in
index 07d362f..a38bd16 100644
--- a/src/testdir/test72.in
+++ b/src/testdir/test72.in
@@ -6,7 +6,8 @@
:so small.vim
:"
:" Test 'undofile': first a simple one-line change.
-:set nocp ul=100 undofile nomore
+:set nocompatible viminfo+=nviminfo
+:set ul=100 undofile nomore
:e! Xtestfile
ggdGithis is one line:set ul=100
:s/one/ONE/