bzr rm should remove clean subtrees

[Martin Pool]

bzr rm should remove (without needing --force) subtrees that contain no files with text changes or modified files.

I think it's ok to remove ignored files, or trees that have renames in or out.

With --force we should remove the subtree regardless of text changes or unknown files.

bialix asks:

> C:\work\Bazaar\bzrconf\bzr-config-trunk\locale>bzr remove ru --force
> locale/ru is not empty directory and won't be deleted.
>
>
> ^-- Why `remove` don't want to delete subdirectories (even with --force)?
> There is no other unversioned or ignored files inside,
> so deleting all subdirs is pretty safe here.
> This message contrary to previous error's suggestion
> to use '--force to delete them regardless'

[Matthew Fuller (fullermd)]

I'm not sure if this is exactly what's discussed above or not, but rm doesn't remove directories at all unless they're the one specified in the command line.

#!/bin/sh -x
bzr="bzr"

# Create
${bzr} init t
cd t
# If you used these two, it Just Works
#mkdir a
#touch a/b
# With these, it doesn't, as below
mkdir a a/b
touch a/b/c
${bzr} add
${bzr} ci -m 'a'

# Remove
${bzr} rm --force a

# a/b/ isn't removed, and so rm refuses to remove a/

[Marius Kruger (amanica)]

I intend to work on this this weekend.

[Marius Kruger (amanica)]

thanks Alexander for reviewing and merging it.