cynthia avishegnath created CLI-243:
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Summary: helpful -help option in a sea of required options
Key: CLI-243
URL: https://issues.apache.org/jira/browse/CLI-243
Project: Commons CLI
Issue Type: Bug
Components: Options definition, Parser
Affects Versions: 1.2
Environment: Java obviously.
Reporter: cynthia avishegnath
Fix For: 1.3
Let's say we have the required options a, b, c, d, e, f, ...., z.
And we have a single optional option "help".
So, I enter
>java blah..blah ..blah mainClass -help.
It ends up with catching the missing option exception. There is no way of
specifying that if -help is supplied then all mandatory options are ignored.
The way around it is to double parse the args, or to override the parser, the
hassle of which defeats the purpose of using CLI.
You should have a new method
> public void parse(
CommandLine cmd, Options options, String[] arguments,
Properties properties, boolean stopAtNonOption)
throws ParseException;
So that, on exception, I could still have a handle to cmd object, which I would
determine if "-help" was specified.
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