zlacker

>>janvdb+(OP)
Strangely, it seems that many versions of macOS on opensource.apple.com are missing grep. It used to be its own project until 10.7 Lion, after which it disappeared and then reappeared under text_cmds in 10.12 Sierra.

>>saagar+W9
Apparently, the 10.7→10.8 update is when macOS switched from GNU grep to FreeBSD grep.