Merge branch 'ds/checkout-upper'

* ds/checkout-upper:
git-checkout: Test for relative path use.
git-checkout: Support relative paths containing "..".

diff --cc git-checkout.sh
index c00cedd4837577647e369bd398fb3f6635674544,616d1eb8f8647d69bca0decc181aff2657bfae73..aa724ac1a3859791187d257da6445d2b4adc1de8
--- 1/git-checkout.sh
--- 2/git-checkout.sh
+++ b/git-checkout.sh
@@@ -133,12 -134,12 +133,12 @@@ Did you intend to checkout '$@' which c
        fi
  
        # Make sure the request is about existing paths.
-       git ls-files --error-unmatch -- "$@" >/dev/null || exit
-       git ls-files -- "$@" |
-       git checkout-index -f -u --stdin
+       git ls-files --full-name --error-unmatch -- "$@" >/dev/null || exit
+       git ls-files --full-name -- "$@" |
+               (cd_to_toplevel && git checkout-index -f -u --stdin)
  
 -        # Run a post-checkout hook -- the HEAD does not change so the
 -        # current HEAD is passed in for both args
 +      # Run a post-checkout hook -- the HEAD does not change so the
 +      # current HEAD is passed in for both args
        if test -x "$GIT_DIR"/hooks/post-checkout; then
            "$GIT_DIR"/hooks/post-checkout $old $old 0
        fi