Re: Warning to those using rgrep on Mac OS X

[Aidan Gauland]

Perry Smith <pedzsan@gmail.com> writes:
> There is no simple way to get setting grep-find-use-xargs to 'gnu to
> work because out of the box, emacs adds in -e to xargs (which is
> non-standard and the Mac doesn't have it).

According to the GNU grep manual, "`-e' is specified by POSIX," so grep
on any POSIX system — which, as far as I know, Macintosh is — should
have it.  So why the heck does Macintosh's grep (would we call it
"Darwin grep?") command not have it?