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From "Ingo Weiss (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CLI-179) Needs "standalone" options that can be used even if required options are not set
Date Wed, 19 Jul 2017 09:23:00 GMT

    [ https://issues.apache.org/jira/browse/CLI-179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16092834#comment-16092834
] 

Ingo Weiss edited comment on CLI-179 at 7/19/17 9:22 AM:
---------------------------------------------------------

[~ebourg], I don't quite understand your suggestion here. If I set the option group as required
then it will require to have a --help or --version but that doesn't translate to "if --help
or --version are provided, skip the required options list outside this option group".

Here is a practical example:
{noformat}
java -jar app.jar --help
Missing required options: s, t
usage: server-migration [-e <environment file>] [-h] [-i <true/false>] -s <source>
-t <target>
 -e,--environment <environment file>   env
 -h,--help                             help
 -i,--interactive <true/false>         int
 -s,--source <source>                  src
 -t,--target <target>                  tgt
{noformat}

If I provide -s and -t then all is fine and help is printed as expected. If I don't provide
any options, than this message is correct, s and t are indeed missing.


was (Author: iweiss):
[~ebourg], I don't quite understand your suggestion here. If I set the option group as required
then it will require to have a --help or --version but that doesn't translate to "if --help
or --version are provided, skip the required options list outside this option group".

> Needs "standalone" options that can be used even if required options are not set
> --------------------------------------------------------------------------------
>
>                 Key: CLI-179
>                 URL: https://issues.apache.org/jira/browse/CLI-179
>             Project: Commons CLI
>          Issue Type: Improvement
>          Components: Parser
>    Affects Versions: 1.2
>            Reporter: Joël Royer
>         Attachments: CLI-179.patch
>
>
> it is currently impossible to have options like "help" or "version" if we also have some
required options. The parsing results in an error "Missing parameters".
> But for an "help" or "version" option, it would be usefull to display the wanted information,
even if required options are not set.



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