git grep argument parser bug

From: Dylan Grafmyre <dylang@conversica.com>
Date: Feb 4, 2016, 22:02 UTC
Message-ID: <CANzEV58SgS6P_qBequGSfA0vFy9s0-KM3xOFaU2DDz_S3OyN3g@mail.gmail.com>

In both ubuntu versions of git 1.9.1 and 2.7.0

    git grep '-test'
    git grep '--help'

Or any other expressions literal leading with a single dash or double dash get interpreted as argument flags and not as search expressions.

What I expect is grep results for the literal strings "-test" and "--help" What i get is git help output informing of wrong argument usage, or accidentally turning on flags I didn't expect.

Work around; for afflicted users terminating argument parsing with ` -- ` works as it should.

    git grep -- '-test'

Confirmed on two Ubuntu [based] systems, Ubuntu Server 14.03 and LinuxMint 17.3 [Cinnamon]

-- 
Dylan Grafmyre
Associate System Administrator

Email: DylanG@conversica.com
Office: +1 (888) 778 1004
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