commit https://github.com/vim/vim/commit/5c71994f4ee5f87d4cce990dbc9684c70b1e108b Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jul 9 23:40:45 2016 +0200 patch 7.4.2015 Problem: When a file gets a name when writing it 'acd' is not effective. (Dan Church) Solution: Invoke DO_AUTOCHDIR after writing the file. (Allen Haim, closes #777, closes #803) Add test_autochdir() to enable 'acd' before "starting" is reset.

--- a/src/globals.h
+++ b/src/globals.h
@@ -635,6 +635,9 @@ EXTERN int	exiting INIT(= FALSE);
 EXTERN int	really_exiting INIT(= FALSE);
 				/* TRUE when we are sure to exit, e.g., after
 				 * a deadly signal */
+#if defined(FEAT_AUTOCHDIR)
+EXTERN int	test_autochdir INIT(= FALSE);
+#endif
 #if defined(EXITFREE)
 EXTERN int	entered_free_all_mem INIT(= FALSE);
 				/* TRUE when in or after free_all_mem() */