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@xxxxxxxxxxxxxx Office: +1 (888) 778 1004 Web: www.conversica.com -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html