alt Hacker News> Those file descriptors are available under/dev/fd on linux, with named options you can do --pk /dev/fd/5.
If you have a procfs mounted at /proc and the open syscall to use on it, sure (and even then, it’s wasteful and adds unnecessary failure paths). Even argument parsing is yet more code to audit.
I think the design is pretty good as-is.
It's 2025, dude. You can't be seriously telling me how difficult it is to parse arguments. It may be difficult in C, but then we're down another sick rabbit hole of justifying bad interface with bad language choice.
One open syscall in addition to dozens already made before your main function is started will have no observable effect whatsoever.