For comparison, the OpenBSD version: https://github.com/openbsd/src/blob/master/usr.bin/yes/yes.c https://github.com/openbsd/src/blob/master/usr.bin/yes/yes.c

For comparison, the OpenBSD version: https://github.com/openbsd/src/blob/master/usr.bin/yes/yes.c https://github.com/openbsd/src/blob/master/usr.bin/yes/yes.c That’s a lot simpler, but also slower (see https://www.reddit.com/r/unix/comments/6gxduc/how_is_gnu_yes_so_fast https://www.reddit.com/r/unix/comments/6gxduc/how_is_gnu_yes..., discussed in https://news.ycombinator.com/item?id=14542938 https://news.ycombinator.com/item?id=14542938)