[CLI-306] Issue parsing numeric options following an option which accepts multiple args in DefaultParser

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.4
• Component/s: CLI-1.x
• Assignee: Unassigned
• Reporter: Todd Ye
• Created: 17/Dec/20 17:17
• Updated: 06/Mar/24 13:28

Description

commons-cli seems to be unable to detect numeric options in their short "opt" form following an option which takes multiple arguments. 

Will consistently throw:

Exception in thread "main" org.apache.commons.cli.MissingOptionException: Missing required option: 2

How to reproduce:

Option multipleOptional = Option.builder("1")
    .longOpt("one")
    .argName("value1,value2,...,valueN")
    .hasArgs()
    .valueSeparator(',')
    .build();
Option singleMandatory = Option.builder("2")
    .argName("value")
    .longOpt("two")
    .hasArg()
    .required()
    .build();

Options options = new Options();
options.addOption(singleMandatory);
options.addOption(multipleOptional);

CommandLineParser parser = new DefaultParser();
CommandLine line = parser.parse(options, args);

for (Option o : line.getOptions()) {
  System.out.println(o.getOpt() + '\t'
      + Arrays.toString(o.getValues()));
}

now pass in:

--one argNumOne,argNumTwo -2 argNumThree 

Note that an error will not occur if "opt" is set to a char like "a/b/c" or if the previous option is set with hasArg() instead of hasArgs()

Also error will not occur if the longOpt is used such as:

--one argNumOne,argNumTwo --two argNumThree