tree c68993d523b60c297c80770dafe2a820a8fbaf6b
parent 7c5f3cc4a5680e23b8aa378ed9b655a1779ee881
author Junio C Hamano <gitster@pobox.com> 1305051030 -0700
committer Junio C Hamano <gitster@pobox.com> 1305056166 -0700

fix overstrict :<path> diagnosis

Given "git log :", we get a disambiguation message that tries to be
helpful and yet totally misses the point, i.e.

    $ git log :
    fatal: Path '' does not exist (neither on disk nor in the index).
    $ git log :/
    fatal: Path '/' exists on disk, but not in the index.

An empty path nor anything that begins with '/' cannot possibly in the
index, and it is wrong to guess that the user might have meant to access
such an index entry.

It should yield the same error message as "git log '*.c'", i.e.

    $ git log '*.c'
    fatal: ambiguous argument '*.c': unknown revision or path not in the working tree.
    Use '--' to separate paths from revisions

Signed-off-by: Junio C Hamano <gitster@pobox.com>