[Bug 914499] [NEW] 'su --help' exits with error code 2

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Version: 1:4.1.4.2-1ubuntu3.2

Linux applications that have a "help" or "usage" option almost
universally print the requested help to stdout and return with an exit
code of zero.  There was, after all, no error since the user explicitly
requested this output.

'su --help', for no apparent reason, prints its help to stderr and exits
with code 2.  As long as there is a non-zero exit code, output to stderr
is correct, but it I am convinced the exit code should be zero and the
output should go to stdout.

Oddly, although the 'man su' pages do not list -h or --help among the
available options, 'su --help' does (it also does not complain of an
invalid option).

I'm reporting this here because the su maintainers are listed as "Ubuntu
Developers <ubuntu-devel-discuss at lists.ubuntu.com>".

** Affects: shadow (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
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'su --help' exits with error code 2
https://bugs.launchpad.net/bugs/914499
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