Idk if fish has ever shipped builtins that way, but doing so is pretty conventional and doesn't normally put those executables on the PATH. It's what libexec is

Idk if fish has ever shipped builtins that way, but doing so is pretty conventional and doesn't normally put those executables on the PATH. It's what libexec is for: https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch04s07.html https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch04s07.htm... If you wanna add a builtin like that to your own distribution of fish, you could do it cleanly by keeping those binaries in /usr/lib or /usr/libexec and then wrapping them in a fish function that ships in fish's install prefix. (This is basically how fish's Python scripts for generating completions from manpages are shipped today.)