bin/58740: ls: flag -O incorrectly described in MAN and buggy

[tlaronde%kergis.com@localhost]

>Number:         58740
>Category:       bin
>Synopsis:       ls: flag -O incorrectly described in MAN and buggy
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Oct 11 11:05:01 +0000 2024
>Originator:     LARONDE Thierry
>Release:        current
>Organization:
>Environment:
NetBSD cauchy.polynum.local 10.99.12 NetBSD 10.99.12 (CAUCHY) #2: Thu Sep 26 16:02:35 CEST 2024  tlaronde@cauchy.polynum.local:/data/m/netbsd-10.99/sys/arch/amd64/compile/CAUCHY amd64

>Description:
ls(1) has a non POSIX flag 'O' that is described as displaying only "leaf" files (files, not directory).

This is not what it does: it only suppresses the display of the newline, dir and trailing ':' when going recursive.

Furthermore---this was found by Valery Ushakov---the implementation is buggy:

$ mkdir -p 1/2/3/4
$ touch 1/2/200
$ find .