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https://issues.apache.org/jira/browse/CLI-137?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12514577
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Brian Egge commented on CLI-137:
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In 1.1, the hasArg() set the number of expected values to '1'. Apparently, in
1.0 it defaulted to unlimited. You can get the previous behavior by changing
the code like this:
Option option = OptionBuilder.withLongOpt("flob").hasArgs().create('F');
The output will then look like:
-F 1
-F 3
-F bla
-F 76
-F 54
--blah 1
--blah 3
--blah bla
--blah 76
--blah 54
In 1.1, you can call getOptionValues by either the short name or the long name.
Since they are the same option, they return the same values.
hasArg expects a single value, while hasArgs allows unlimited values. I think
this behavior, although different, is what the original API has intended.
> Change of behaviour 1.0 -> 1.1
> ------------------------------
>
> Key: CLI-137
> URL: https://issues.apache.org/jira/browse/CLI-137
> Project: Commons CLI
> Issue Type: Bug
> Environment: Ubuntu 7.04 Feisty Fawn (JDK 1.6.0) + Commons CLI 1.0
> and 1.1
> Reporter: Russel Winder
> Priority: Blocker
>
> The code:
> {code}
> import org.apache.commons.cli.CommandLine ;
> import org.apache.commons.cli.OptionBuilder ;
> import org.apache.commons.cli.GnuParser ;
> import org.apache.commons.cli.Option ;
> import org.apache.commons.cli.Options ;
> import org.apache.commons.cli.ParseException ;
> public class Trial {
> private void execute ( final String[] commandLine ) throws ParseException {
> final Options options = new Options ( ) ;
> options.addOption ( OptionBuilder.withLongOpt ( "flob" ).hasArg (
> ).create ( 'F' ) ) ;
> final CommandLine line = ( new GnuParser ( ) ).parse ( options ,
> commandLine ) ;
> String[] results = line.getOptionValues ( 'F' ) ;
> if ( results != null ) { for ( String s : results ) { System.out.println
> ( "-F " + s ) ; } }
> results = line.getOptionValues ( "flob" ) ;
> if ( results != null ) { for ( String s : results ) { System.out.println
> ( "--blah " + s ) ; } }
> String[] theRest = line.getArgs ( ) ;
> for ( String s : theRest ) { System.out.print ( s + " " ) ; }
> System.out.println ( ) ;
> }
> public static void main ( final String[] args ) throws ParseException {
> final Trial trial = new Trial ( ) ;
> trial.execute ( new String[] { "-F1" , "-F3" , "-Fbla" , "-F 76" ,
> "--flob" , "54" } ) ;
> }
> }
> {code}
> when compiled and executed under 1.0 produces:
> trial:
> [java] -F 1
> [java] -F 3
> [java] -F bla
> [java] -F 76
> [java] -F 54
> [java]
> However, when compiled and executed under 1.1 produces:
> trial:
> [java] -F 1
> [java] --blah 1
> [java] 3 bla 76 54
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