### Please describe the problem.

Running git-annex merge shows the output "git-annex merge ", followed by a blinking cursor. The command never seems to end.

### What steps will reproduce the problem?


### What version of git-annex are you using? On what operating system?

4.20130827-gd04d9bb on MacOS X Mountain Lion

### Please provide any additional information below.

dtruss output at https://www.dropbox.com/s/4b3yqn7ajfz5el2/annex-merge.log