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From "Emmanuel Bourg (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLI-219) Allow to specify options with a single argument that will be split into multiple arguments
Date Fri, 03 Jun 2011 00:06:47 GMT

    [ https://issues.apache.org/jira/browse/CLI-219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13043148#comment-13043148
] 

Emmanuel Bourg commented on CLI-219:
------------------------------------

Thank you for the patch Gilles. Looking at your command line example I'm not convinced it's
a good idea. If you were to allow several files arguments for an option I think the syntax
you proposed would cause several problems:

{code}-b "file1  file2  file3" arg1 arg2{code}

- people will most likely forget to put the quotes
- what if the file names also contain a space ?

I would rather recommend the following syntax:

{code}-b file1 -b file2 -b file3 arg1 arg2{code}

or this one using a non space separator:

{code}-b file1;file2;file3 arg1 arg2{code}

For the latter you can either declare the option with a value separator, or split the value
manually.




> Allow to specify options with a single argument that will be split into multiple arguments
> ------------------------------------------------------------------------------------------
>
>                 Key: CLI-219
>                 URL: https://issues.apache.org/jira/browse/CLI-219
>             Project: Commons CLI
>          Issue Type: New Feature
>          Components: CLI-1.x
>    Affects Versions: 1.2
>            Reporter: Gilles
>              Labels: features
>             Fix For: 1.3
>
>         Attachments: svn_diff.txt
>
>
> I've explained the issue in that thread:
>   http://www.mail-archive.com/user@commons.apache.org/msg06483.html
> As hinted there, a solution might be to allow that the (single) argument of an "Option"
(cf. "hasArg()") be split according to a user-defined regexp pattern. If given a split pattern,
the code would convert a single-arg "Option" into a multiple-args one (where the arguments
are the result of splitting the single-arg string with the pattern).

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