Test the delete command.

	$ mkdir patches

	$ cat > test.txt
	< Calling pci_match_id() would be more feasible.

	$ quilt new test1
	> Patch %{P}test1 is now on top

	$ quilt add test.txt
	> File test.txt added to patch %{P}test1

	$ cat > test.txt
	< Try the following patch instead.

	$ quilt refresh
	> Refreshed patch %{P}test1

	$ quilt new test2
	> Patch %{P}test2 is now on top

	$ quilt add test.txt
	> File test.txt added to patch %{P}test2

	$ cat > test.txt
	< Ok, that's fine with me if you want to do that instead.

	$ quilt refresh
	> Refreshed patch %{P}test2

	$ quilt delete test1
	> Patch %{P}test1 is currently applied

	$ quilt pop
	> Removing patch %{P}test2
	> Restoring test.txt
	>
	> Now at patch %{P}test1

	$ quilt series
	> %{P}test1
	> %{P}test2

	$ quilt delete -n
	> Removed patch %{P}test2

	$ quilt series
	> %{P}test1

	$ quilt pop
	> Removing patch %{P}test1
	> Restoring test.txt
	>
	> No patches applied

	$ quilt delete test1
	> Removed patch %{P}test1

	$ quilt series

	$ echo "test1" > patches/series
	$ quilt delete -n
	> Removed patch %{P}test1

	$ quilt series

	# Force the pop operaton to fail
	$ echo "test3" > patches/series
	$ echo "test3" > %{QUILT_PC}/applied-patches
	$ mkdir -p %{QUILT_PC}/test3/dir
	$ touch %{QUILT_PC}/test3/dir/file
	$ chmod a-rx %{QUILT_PC}/test3/dir

	# Note that this will succeed (instead of the expected failure) if
	# running as root, but you shouldn't do that anyway.
	$ quilt delete "test3"
	> Removing patch %{P}test3
	>~ .*find: [`']?\./dir'?: Permission denied

	$ chmod a+rx %{QUILT_PC}/test3/dir

	$ find %{QUILT_PC}/test3
	> %{QUILT_PC}/test3
	> %{QUILT_PC}/test3/dir
	> %{QUILT_PC}/test3/dir/file

	$ quilt applied
	> No patches applied

	$ quilt series
	> %{P}test3

	$ quilt delete
	> No patches applied

	$ quilt delete test3
	> Removed patch %{P}test3
