Do you even know what coreutils is? It is not openbsdutils. It is not plan9utils. It is not even linuxutils. It builds and runs on virtually every deployed vagu

Do you even know what coreutils is? It is not openbsdutils. It is not plan9utils. It is not even linuxutils. It builds and runs on virtually every deployed vaguely POSIX-ish environment and then some. Can I take the OpenBSD userland and untar, configure, build and run in cygwin? Nope. You have proven my point. Nobody uses the little SYS V version. One hint as to why the GNU version is so "long" and "messy": /* System V machines already have a /bin/sh with a v9 behavior. Use the identical behavior for these machines so that the existing system shell scripts won't barf. */ bool do_v9 = DEFAULT_ECHO_TO_XPG; It has to run in environments that others do not in order to provide full functionality, so it has to implement that functionality. And Unix Fifth Edition, imbued with the cleanliness of Ken Thompson's ghost? Yeah, that's lovely, but not only is it again, of limited utility and portability across idiosyncratic modern environments, but it's full of bugs dating to an era where simplicity was valued above handling all inputs. In 1983, crashing on a bad input wasn't even generally understood to BE a bug, much less extremely dangerous especially in core system utilities.