$ mkdir patches

# quilt should not remove symlinks to patch files
	$ echo foo > foo
	$ quilt new test.diff
	> Patch %{P}test.diff is now on top

	$ quilt add foo
	> File foo added to patch %{P}test.diff

	$ echo "foo changed" > foo
	$ quilt refresh
	> Refreshed patch %{P}test.diff

# Setup a symlink
	$ mv patches/test.diff .
	$ ln -s ../test.diff patches/test.diff
	$ readlink patches/test.diff
	> ../test.diff

# Test the refresh
	$ echo "foo changed 2" > foo
	$ quilt refresh --no-index -p ab
	> Refreshed patch %{P}test.diff

	$ readlink patches/test.diff
	> ../test.diff

# Test the refresh --backup
	$ echo "foo changed 3" > foo
	$ touch -r patches/test.diff test.timeref
	$ quilt refresh --backup --no-index -p ab
	> Refreshed patch %{P}test.diff

	$ readlink patches/test.diff
	> ../test.diff

	$ cat patches/test.diff
	> --- a/foo
	> +++ b/foo
	> @@ -1 +1 @@
	> -foo
	> +foo changed 3

	$ readlink patches/test.diff~
	$ echo %{?}
	> 1

	$ cat patches/test.diff~
	> --- a/foo
	> +++ b/foo
	> @@ -1 +1 @@
	> -foo
	> +foo changed 2

	$ [ patches/test.diff~ -nt test.timeref ] && echo "mtimes differ"

# Test the header update
	$ quilt header -a
	< A test patch
	> Appended text to header of patch %{P}test.diff

	$ readlink patches/test.diff
	> ../test.diff

# Test the header update with a backup
	$ touch -r patches/test.diff test.timeref
	$ quilt header -r --backup
	> Replaced header of patch %{P}test.diff

	$ readlink patches/test.diff
	> ../test.diff

	$ cat patches/test.diff
	> --- a/foo
	> +++ b/foo
	> @@ -1 +1 @@
	> -foo
	> +foo changed 3

	$ readlink patches/test.diff~
	$ echo %{?}
	> 1

	$ cat patches/test.diff~
	> A test patch
	> --- a/foo
	> +++ b/foo
	> @@ -1 +1 @@
	> -foo
	> +foo changed 3

	$ [ patches/test.diff~ -nt test.timeref ] && echo "mtimes differ"

# Test the refresh when target is read-only
	$ chmod -w test.diff
	$ echo "foo changed 4" > foo
	$ quilt refresh --no-index -p ab
	> Refreshed patch %{P}test.diff

	$ readlink patches/test.diff
	$ echo %{?}
	> 1

	$ cat patches/test.diff
	> --- a/foo
	> +++ b/foo
	> @@ -1 +1 @@
	> -foo
	> +foo changed 4

# Test the refresh --backup when target is read-only
	$ rm -f test.diff
	$ mv patches/test.diff .
	$ ln -s ../test.diff patches/test.diff
	$ chmod -w test.diff

	$ echo "foo changed 5" > foo
	$ quilt refresh --backup --no-index -p ab
	> Refreshed patch %{P}test.diff

	$ readlink patches/test.diff
	$ echo %{?}
	> 1

	$ cat patches/test.diff
	> --- a/foo
	> +++ b/foo
	> @@ -1 +1 @@
	> -foo
	> +foo changed 5

	$ readlink patches/test.diff~
	$ echo %{?}
	> 1

	$ cat patches/test.diff~
	> --- a/foo
	> +++ b/foo
	> @@ -1 +1 @@
	> -foo
	> +foo changed 4