[jira] [Updated] (MESOS-2766) Add to FlagsBase the default --help behavior

["Bernd Mathiske (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MESOS-2766?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bernd Mathiske updated MESOS-2766:
----------------------------------
    Assignee: Marco Massenzio

> Add to FlagsBase the default --help behavior
> --------------------------------------------
>
>                 Key: MESOS-2766
>                 URL: https://issues.apache.org/jira/browse/MESOS-2766
>             Project: Mesos
>          Issue Type: Bug
>          Components: stout
>            Reporter: Marco Massenzio
>            Assignee: Marco Massenzio
>            Priority: Minor
>              Labels: tech-debt
>
> In every "launcher" file (ie, those containing some variation on {{main()}}) there is a minor variation on:
> {code}
>   if (flags.help) {
>     cout << flags.usage() << endl;
>     // arguably this is not an error: the user asked for help,
>     // and she got it: // the program execution ought to be
>     // considered successful.
>     return EXIT_SUCCESS;
>   }
> {code}
> As this is default behavior, and we've added support for the {{--help}} flag in the {{BaseFlags}} class, we should add this too there and remove it from everywhere else.
> This follows the DRY principle.



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