Yeah, but that’s Emacs, they are known to keep compatibility with some odd Sun box running SunOS a greybeard contributor just won’t let go of. But other modern

Yeah, but that’s Emacs, they are known to keep compatibility with some odd Sun box running SunOS a greybeard contributor just won’t let go of. But other modern codebases will want more modern syscalls without fallbacks and compromises (see those atomic file operations which solve some nasty vulnerabilities for an example).