On 6/14/2020 8:05 PM, Bill Coffin wrote: > I've been using RCS for many years in an older cygwin running, most recently, on > Windows 10. For some reason, my cygwin installation went nuts so I downloaded > and installed cygwin64. cygwin64 works great but doesn't have RCS. RCS is available for 64-bit Cygwin. Just install it using setup-x86_64.exe. Ken