I'm running 10.7.5 and get no crash. Because I have GNU grep, it seems. % echo i860 | grep --color -e i860 -e i86 i860 % uname -a Darwin xebulon.local

I'm running 10.7.5 and get no crash. Because I have GNU grep, it seems. % echo i860 | grep --color -e i860 -e i86 i860 % uname -a Darwin xebulon.local 11.4.2 Darwin Kernel Version 11.4.2: Thu Aug 23 16:25:48 PDT 2012; root:xnu-1699.32.7~1/RELEASE_X86_64 x86_64 % grep --version grep (GNU grep) 2.5.1 ... % which grep /usr/bin/grep It looks like 2.5.1 was released on 29-Oct-2004.