Subject: grep -C 0 could also give separators

From: 積丹尼 Dan Jacobson <[email-masked]>
Date: Thu, 01 May 2014 13:33:22 +0800

One notices that when -C 0 is used, it acts like no -C was given at all.
Perhaps it should still output the group separators like -C 1 etc. does.
grep (GNU grep) 2.18