On 01/17/12 00:00, Thien-Thi Nguyen wrote: > Much less hassle: "If the system has grcs, it is > new-style; if not, old-style".
On the contrary, that heuristic is more hassle, because it does not work as stated. grcs is commonly used as the name of the old-fashioned 'rcs' command, right now. See, for example, <http://www.openbsd.org/4.5_packages/i386/grcs-5.7p0.tgz-contents.html>. One could get the heuristic to work, but at that point it becomes too much hassle. For example, this: if (grcs --version) >/dev/null 2>&1; then rcs_style=new else rcs_style=old fi is just as complicated as this: if (rcs --commands) >/dev/null 2>&1; then rcs_style=new else rcs_style=old fi and the whole thing becomes more confusing to users. Let's keep it simple and stick with plain "rcs" for RCS commands.
