printf '%s' "(using $uprog0=$uprog) "
fi
- ## /bin/sh should always define the "command" builtin, but for
- ## some odd reason sometimes it does not on hydra.nixos.org.
- ## /bin/sh = "BusyBox v1.27.2", "built-in shell (ash)". ?
+ ## /bin/sh should always define the "command" builtin, but
+ ## sometimes it does not on hydra.nixos.org.
+ ## /bin/sh = "BusyBox v1.27.2", "built-in shell (ash)".
+ ## It seems to be an optional compile-time feature in that shell:
+ ## see ASH_CMDCMD in <https://git.busybox.net/busybox/tree/shell/ash.c>.
if command -v command > /dev/null 2>&1; then
command -v $uprog > /dev/null || return 1
else