AW: [Bug: Busybox 1.22.1] false return 0 instead of 1 with '--help' switch.

[dietmar.schindler at manroland-web.com]

> Von: Laurent Bercot
> Gesendet: Samstag, 30. August 2014 11:38
>
>   POSIX does not specify anything about --help. It's a GNU extension,
> like every long option.
>
>   For true or false, POSIX does not specify any option at all:
>   http://pubs.opengroup.org/onlinepubs/9699919799/utilities/false.html
>
>   False is supposed to return a non-zero exit code. Nothing else is
> specified. So it applies when arguments are given to false too, no
> matter what those arguments are; and busybox's behaviour is non-compliant.

That does not follow. http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap01.html#tag_17_04 talks in the OPTIONS section about "arbitrary options that the implementation may provide as an extension" (as --help is) and that "utility options [...] modify the actions of the utility". (Also, it says: «When this section is listed as "None.", it means that the implementation need not support any options.» That doesn't mean "may not".)
The EXIT STATUS section also talks about "implementations with extensions", thus it seems evident to me that extensions may modify the exit status as part of their actions.
--
Regards,
Dietmar Schindler
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