patch 8.1.1691: diff test fails on some systems
Problem: Diff test fails on some systems. (Elimar Riesebieter)
Solution: Add a term_wait() call.
diff --git a/src/testdir/test_diffmode.vim b/src/testdir/test_diffmode.vim
index bf49740..f82a11c 100644
--- a/src/testdir/test_diffmode.vim
+++ b/src/testdir/test_diffmode.vim
@@ -743,6 +743,7 @@
call term_sendkeys(a:buf, ":diffupdate!\<CR>")
" trailing : for leaving the cursor on the command line
call term_sendkeys(a:buf, ":set diffopt=internal,filler" . a:extra . "\<CR>:")
+ call term_wait(a:buf)
call VerifyScreenDump(a:buf, a:dumpfile, {})
endfunc