https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291686

--- Comment #4 from Ed Maste <[email protected]> ---
They are not required:

1.6 Built-In Utilities
...
However, all of the standard utilities other than:
...
    The intrinsic utilities named in Intrinsic Utilities, except for kill

shall be implemented, regardless of whether they are also implemented as
regular built-ins, in a manner so that they can be accessed via the exec family
of functions as defined in the System Interfaces volume of POSIX.1-2024 and can
be invoked directly by those standard utilities that require it (env, find,
nice, nohup, time, xargs).

1.7 Intrinsic Utilities

As described in 2.9.1.4 Command Search and Execution, intrinsic utilities are
not subject to a PATH search during command search and execution. The utilities
named in Intrinsic Utilities shall be intrinsic utilities.

Table: Intrinsic Utilities

alias
bg
cd
command
fc
fg
getopts
hash
jobs
kill
read
type
ulimit
umask
unalias

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