git describe oddity with GIT_DIR

Hi,

I've encountered an oddity with git describe. Consider the following snippet: ----- mkdir test cd test git init echo 1 > file git add file git commit -m "changes" $ git describe --always --dirty 8ad486e $ cd .. $ git --git-dir=test/.git describe --always --dirty 8ad486e-dirty $ GIT_DIR=test/.git git describe --always --dirty 8ad486e-dirty -----

The "-dirty" suffix appears if invoking git not from the worktree itself, but should actually never appear.

According to my research this behaviour is there since 9f67d2e8 (Teach "git describe" --dirty option, 2009-10-27).

Is that to expected?

Thanks Thomas