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When the N-th previous thing checked out syntax (@{-N}) is used with '--branch' option of check-ref-format the result may not be the name of a branch that currently exists or ever existed. This is because @{-N} is used to refer to the N-th last checked out "thing", which might be a commit object name if the previous check out was a detached HEAD state; or a branch name, otherwise. The documentation thus does a wrong thing by promoting it as the "previous branch syntax". State that @{-N} is the syntax for specifying "N-th last thing checked out" and also state that the result of using @{-N} might also result in an commit object name. Signed-off-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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