rebase not honoring core.worktree pointing elsewhere

Hello,

I'm observing an unexpected error from "git rebase" run from the directory containing the ".git" directory:

$ git --version

git version 1.7.3.GIT (includes up to commit ca2090 from git repository at http://www.kernel.org/pub/scm/git/git.git)

$ mkdir wherefilesare $ mkdir wheregitis $ cd wherefilesare $ echo "Here is a line from the original" > myfile.txt $ cd ../wheregitis $ git init $ git config core.worktree /absolute/path/to/wherefilesare/ $ git add . $ git commit $ git branch mybranch $ git checkout mybranch $ vim ../wherefilesare/myfile.txt $ git add . $ git commit $ git checkout master $ vim ../wherefilesare/myfile.txt $ git add . $ git commit $ git checkout mybranch $ git rebase master

fatal: /usr/libexec/git-core/git-rebase cannot be used without a working tree.

Since I'm in the directory containing ".git" at this point, the ".git" directory and the worktree can be unambiguously found. Other commands besides "git rebase" work. I would expect "git rebase" to work as well. Is this a bug or an unreasonable expectation on my part?