tests/test-nested-repo

Make audit_path more stringent.

The following properties of a path are now checked for:

    - under top-level .hg
    - starts at the root of a windows drive
    - contains ".."
    - traverses a symlink (e.g. a/symlink_here/b)
    - inside a nested repository

If any of these is true, the path is rejected.

The check for traversing a symlink is arguably stricter than necessary;
perhaps we should be checking for symlinks that point outside the
repository.

#!/bin/sh

hg init a
cd a
hg init b
echo x > b/x

echo '# should print nothing'
hg add b
hg st

echo '# should fail'
hg st b/x
hg add b/x

echo '# should arguably print nothing'
hg st b

echo a > a
hg ci -Ama a

echo '# should fail'
hg mv a b
hg st