Am 15.01.2015 um 18:47 schrieb Tilman Hausherr <thaush...@t-online.de>:

> I think that a call that results in printing the usage should result in a 
> non-null exit code.
> 

fine - but shouldn't an error in processing not also lead to a non-null exit 
code? 

> Tilman
> 
> Am 15.01.2015 um 18:13 schrieb Maruan Sahyoun:
>> Yes,
>> 
>> current behavior within the tools
>> usage(): some tools have a System.exit, some don't and for the ones they 
>> have the exit code is not always the same.
>> -main() there is no System.exit for the ones I looked at in case of an 
>> error. Only an error message is written to System.err
>> 
>> You'd rather expect System.exit > 0 in case there is an issue in main 
>> processing and then System.exit as part of usage makes sense. If there is 
>> none on main there shouldn't be one on usage().
>> 
>> So I'd remove it on usage() too.
>> 
>> WDYT?
>> 
>> Maruan
>> 
>> Am 15.01.2015 um 18:00 schrieb Andreas Lehmkuehler <andr...@lehmi.de>:
>> 
>>> Hi,
>>> 
>>> Am 15.01.2015 um 17:20 schrieb John Hewson:
>>>> Only if there's a non-zero number  used as the argument.
>>> Yes, but IMO such a value is only useful if there is any processing issue. 
>>> Maruans question targets those calls within the usage message which is 
>>> shown only if there is any issue with the given commandline parameters.
>>> 
>>> I'd remove such calls.
>>> 
>>>> -- John
>>>> 
>>>>> On 15 Jan 2015, at 06:06, Maruan Sahyoun <sahy...@fileaffairs.de> wrote:
>>>>> 
>>>>> Hi,
>>>>> 
>>>>> do we need System.exit() in our command line tools usage messages? 
>>>>> Opinions? Don't see a benefit of having them.
>>>>> 
>>>>> BR
>>>>> Maruan
>>> BR
>>> Andreas LEhmkühler
> 

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