unset GIT_NOTES_DISPLAY_REF
 unset GIT_NOTES_REWRITE_REF
 unset GIT_NOTES_REWRITE_MODE
+unset GIT_REFLOG_ACTION
+unset GIT_CHERRY_PICK_HELP
+unset GIT_QUIET
 GIT_MERGE_VERBOSITY=5
 export GIT_MERGE_VERBOSITY
 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
                        if (n == 47) return "BWHITE";
                }
                {
-                       while (match($0, /\x1b\[[0-9;]*m/) != 0) {
+                       while (match($0, /\033\[[0-9;]*m/) != 0) {
                                printf "%s<", substr($0, 1, RSTART-1);
                                codes = substr($0, RSTART+2, RLENGTH-3);
                                if (length(codes) == 0)
        exit 1
 }
 
+HOME="$TRASH_DIRECTORY"
+export HOME
+
 test_create_repo "$test"
 # Use -P to resolve symlinks in our working directory so that the cwd
 # in subprocesses like git equals our $PWD (for pathname comparisons).
 cd -P "$test" || exit 1
 
-HOME=$(pwd)
-export HOME
-
 this_test=${0##*/}
 this_test=${this_test%%-*}
 for skp in $GIT_SKIP_TESTS