patch 7.4.790
Problem:    Test fails when the autochdir feature is not available.  Test
            output contains the test script.
Solution:   Check for the autochdir feature. (Kazunobu Kuriyama)  Only write
            the relevant test output.
diff --git a/src/testdir/test_autocmd_option.in b/src/testdir/test_autocmd_option.in
index 4d71c50..1ccfe8c 100644
--- a/src/testdir/test_autocmd_option.in
+++ b/src/testdir/test_autocmd_option.in
@@ -2,7 +2,7 @@
 
 STARTTEST
 :so small.vim
-:if !has("eval") || !has("autocmd") | e! test.ok | w! test.out | qa! | endif
+:if !has("eval") || !has("autocmd") || !exists("+autochdir") | e! test.ok | w! test.out | qa! | endif
 :fu! AutoCommand(match)
 :	let c=g:testcase
 :       let item=remove(g:options, 0)
@@ -67,7 +67,7 @@
 :setlocal key=blah
 :setlocal key=
 :$put =g:testcase
-:%w! test.out
+:/^dummy text/,$w! test.out
 :qa!
 ENDTEST
 dummy text