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https://issues.apache.org/jira/browse/CLI-212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Per Cederberg updated CLI-212:
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Attachment: sort-fix.patch
Clarification + patch for required code changes.
> Impossible to print command-line options in same order as added
> ---------------------------------------------------------------
>
> Key: CLI-212
> URL: https://issues.apache.org/jira/browse/CLI-212
> Project: Commons CLI
> Issue Type: Bug
> Components: Help formatter
> Affects Versions: 1.2
> Reporter: Per Cederberg
> Attachments: sort-fix.patch
>
>
> Using the current HelpFormater and Options classes it is impossible to print
> command-line options in the same order as they were added.
> In some applications this is critical, since option grouping is important for
> understanding how to use a program. Also, the programmer might have good
> reasons for adding options in a particular order. The default could remain
> printing sorted options, however.
> Two small changes need to be made to allow this:
> 1. Change to use LinkedHashMap instead of HashMap in Options class:
> private Map shortOpts = new LinkedHashMap(); // keeps original order by
> default
> private Map optionGroups = new LinkedHashMap();
> 2. Change the "null" formatter option in HelpFormatter to actually skip
> sorting:
> public void setOptionComparator(Comparator comparator)
> this.optionComparator = comparator; // allow null values, default
> ordering
> }
> Fix #2 above isn't strictly necessary, but would avoid forcing users to
> create boiler-plate code for this.
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