	$ mkdir patches

	$ mkdir subdir
	$ cat > subdir/file
	< old file

	$ quilt new test.patch
	> Patch %{P}test.patch is now on top

	$ quilt add subdir/file
	> File subdir/file added to patch %{P}test.patch

	$ cat > subdir/file
	< new contents

	This creates the patches/ directory:

	$ quilt refresh
	> Refreshed patch %{P}test.patch

	$ cd subdir
	$ quilt add file2
	> File subdir/file2 added to patch %{_P}test.patch

	$ cat > file2
	< another file

	$ cat > file3
	< yet another file

	$ quilt add file3
	> File subdir/file3 added to patch %{_P}test.patch

	$ rm -f file3
	$ quilt files -v
	>   subdir/file
	> + subdir/file2
	> - subdir/file3

	$ quilt diff -p ab
	> Index: b/subdir/file
	> ===================================================================
	> --- a/subdir/file
	> +++ b/subdir/file
	> @@ -1 +1 @@
	> -old file
	> +new contents
	> Index: b/subdir/file2
	> ===================================================================
	> --- /dev/null
	> +++ b/subdir/file2
	> @@ -0,0 +1 @@
	> +another file
	> Index: b/subdir/file3
	> ===================================================================
	> --- a/subdir/file3
	> +++ /dev/null
	> @@ -1 +0,0 @@
	> -yet another file

	# Test diff called with multiple file names, from a subdirectory
	$ quilt diff --no-index -p ab file file2 no
	> --- a/subdir/file
	> +++ b/subdir/file
	> @@ -1 +1 @@
	> -old file
	> +new contents
	> --- /dev/null
	> +++ b/subdir/file2
	> @@ -0,0 +1 @@
	> +another file

	# Test diff called with "./" file name prefix, from a subdirectory
	$ quilt diff --no-index -p ab ./file3 ./no
	> --- a/subdir/file3
	> +++ /dev/null
	> @@ -1 +0,0 @@
	> -yet another file

	$ quilt refresh
	> Refreshed patch %{_P}test.patch
