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Date: Mon, 29 Sep 2008 05:12:44 -0700 (PDT)
From: "J. Lewis Muir (JIRA)" <jira@apache.org>
To: issues@commons.apache.org
Subject: [jira] Updated: (CLI-169) HelpFormatter ignores Option's value
 separator
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     [ https://issues.apache.org/jira/browse/CLI-169?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

J. Lewis Muir updated CLI-169:
------------------------------

    Attachment: long-opt-name-arg-separator.patch

> HelpFormatter ignores Option's value separator
> ----------------------------------------------
>
>                 Key: CLI-169
>                 URL: https://issues.apache.org/jira/browse/CLI-169
>             Project: Commons CLI
>          Issue Type: Bug
>          Components: Help formatter
>    Affects Versions: 1.2
>            Reporter: J. Lewis Muir
>             Fix For: 1.2
>
>         Attachments: long-opt-name-arg-separator.patch, use-value-separator-in-help-formatter.patch
>
>   Original Estimate: 0.5h
>  Remaining Estimate: 0.5h
>
> The HelpFormatter always renders a space between the option name and value even if the option has a value separator that is not a space.  For example, this option:
> {code}
> Option option = new Option("B", "bsize", true, "block size in bytes");
> option.setArgName("SIZE");
> option.setValueSeparator('=');
> {code}
> is rendered like this:
> {noformat}
> -B,--bsize <SIZE>  block size in bytes
> {noformat}
> But I would expect it to be rendered like this:
> {noformat}
> -B,--bsize=<SIZE>  block size in bytes
> {noformat}
> For the automatically generated usage message, a similar problem exists.  I changed it to try to use the value separator when rendering the option with the short name only if there's no long name.  If there's no short name, it always tries to use the value separator with the long name rendering.
> For example, consider this option containing a short name and a specified value separator:
> {code}
> Option option = new Option("B", true, "block size in bytes");
> option.setArgName("SIZE");
> option.setValueSeparator('=');
> {code}
> The automatically generated usage message with my changes would look like this:
> {noformat}
> usage: app [-B=<SIZE>]
> {noformat}
> If the same option included a long name too:
> {code}
> Option option = new Option("B", "bsize", true, "block size in bytes");
> option.setArgName("SIZE");
> option.setValueSeparator('=');
> {code}
> with my changes the value separator is assumed to be meant for use with the long name.  The short option rendering in the usage message will not try to use the value separator and will render the usage message like this:
> {noformat}
> usage: app [-B <SIZE>]
> {noformat}
> Attached is a patch for these fixes with test cases.  The patch is against [http://svn.apache.org/repos/asf/commons/proper/cli/branches/cli-1.x].

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