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https://issues.apache.org/jira/browse/CLI-249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14521988#comment-14521988
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Benedikt Ritter commented on CLI-249:
-------------------------------------
Hello [~dfg],
would you like to create a patch/PR at github to sketch out, how you think a
good/useful API should look like? With the DefaultParser and the new
OptionBuilder we're introducing some new APIs so it would make sense to fix
this as well.
Thanks!
Benedikt
> Message for an illegal character in an option should contain more information
> -----------------------------------------------------------------------------
>
> Key: CLI-249
> URL: https://issues.apache.org/jira/browse/CLI-249
> Project: Commons CLI
> Issue Type: Improvement
> Components: CLI-1.x
> Reporter: David Goodenough
> Fix For: 1.3
>
>
> Currently the code in org.apache.commons.cli.OptionValidator generates an
> IllegalArgumentException which contains the message:-
> "illegal option value '" + ch + "'"
> This is generated in two places, one for single character options and one for
> multi character options.
> However this does not tell the caller which option it is contains this
> character, which makes debugging the error without the source (i.e most
> users) extremely difficult.
> Would it not be possible to change the message to:-
> "illegal option '" + opt + "' value '" + ch + "'"
> which would then at least identify the offending option.
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