t: add a test for shell characters in paths

Now that we've included gitobj v1.4.1, add a test for the failure case
we had in the past to prevent us from regressing this behavior.  Check
that shell characters within a pathname don't cause a failure when we
open the pack file.  Choose brackets since these are available on all
platforms, including Windows.

t/t-fsck.sh

@@ -98,6 +98,30 @@ begin_test "fsck dry run"
 )
 end_test
 
+begin_test "fsck does not fail with shell characters in paths"
+(
+  set -e
+
+  mkdir '[[path]]'
+  cd '[[path]]'
+  reponame="fsck-shell-paths"
+  git init $reponame
+  cd $reponame
+
+  # Create a commit with some files tracked by git-lfs
+  git lfs track *.dat
+  echo "test data" > a.dat
+  echo "test data 2" > b.dat
+  git add .gitattributes *.dat
+  git commit -m "first commit"
+
+  # Verify that the pack code handles glob patterns properly.
+  git gc --aggressive --prune=now
+
+  [ "Git LFS fsck OK" = "$(git lfs fsck)" ]
+)
+end_test
+
 begin_test "fsck: outside git repository"
 (
   set +e