bin/59671: mailx(1) "list" command

[uwe%stderr.spb.ru@localhost]

>Number:         59671
>Category:       bin
>Synopsis:       mailx(1) "list" command
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Sep 27 02:20:00 +0000 2025
>Originator:     Valery Ushakov
>Release:        NetBSD 10-stable
>Organization:
>Environment:
NetBSD snips 10.0_STABLE NetBSD 10.0_STABLE (GENERIC) #0: Mon Jul  8 16:08:11 MSK 2024  uwe@majava:/home/uwe/work/netbsd/cvs/src-release-10/sys/arch/macppc/compile/GENERIC macppc

>Description:
I've tried to use mailx(1) after 30+ years while my mutt package was
being rebuilt.  My fingers still seem to remember some things.
However when I tried "list", I've got:

  & list
  Commands are:
  next, alias, print, Print, type, Type, visual, top, touch, preserve,
  delete, dp, dt, undelete, unset, mail, mbox, more, More, page, Page,
  view, View, unalias, unread, !, |, copy, chdir, cd, save, Save, source,
  set, shell, show, version, group, write, from, file, folder, folders,
  forward, bounce, ?, z, headers, help, =, Reply, Respond, reply,
  respond, edit, echo, quit, list, xit, exit, size, hold, if, ifdef,
  ifndef, else, endif, alternates, ignore, discard, retain, saveignore,
  savediscard, saveretain, Header, core, #, clobber, inc, smopts,
  unsmopts, mkread, detach, Detach, flatten, reverse, sort, thread,
  unthread, down, tset, up, expose, hide, showthreads, hidethreads,
  debug_links, tag, untag, invtags, tagbelow, hidetags, showtags,
  deldups
  & 

So it complains that "list" is not a known command (and it's not in
the man page indeed), but then it lists "list" in the list of command.
This is kinda confusing

>How-To-Repeat:
start mailx(1) and use "list" command, see it simultaneously rejected
as an invalid command and listed in the help message as a possible
command.

>Fix: