Re: [PATCH 2/3] t1092: fix buggy sparse "blame" test

> From: Eric Sunshine <sunshine@sunshineco.com>
> 
> This test wants to verify that `git blame` errors out when asked to
> blame a file _not_ in the sparse checkout. However, the very first file
> it asks to blame _is_ present in the checkout, thus `test_must_fail git
> blame $file` gives an unexpected result (the "blame" succeeds). This
> problem went unnoticed because the test invokes `test_must_fail git
> blame $file` in loop but forgets to break out of the loop early upon
> failure, thus the failure gets swallowed.
> 
> Fix the test by having it not ask to blame a file present in the sparse
> checkout, and instead only blame files not present, as intended. While
> at it, also add the missing `|| return 1` which allowed this bug to go
> unnoticed.