remove subcommand --help output comma when more than one arg

[wyntau]

supose I have defined a program app below

var program = require('commander');

program
    .version('0.0.1');

program
    .command('exec <arg1> [arg2]')
    .description('exec example')
    .action(function(arg1, arg2, options){
        console.log('called exec');
    });

program.parse(process.argv);

Then when I get the exec help info via app exec --help, it will output

Usage: exec [options] <arg1>,[arg2]

  Options:

    -h, --help  output usage information

But the right output should be

Usage: exec [options] <arg1> [arg2]

  Options:

    -h, --help  output usage information

So, I find the problem is that the args is an array, when its length is larger than 1, it will join with ,, what I do is join the array with space :)

[dbushong]

This is a dup of #186

[wyntau]

@dbushong great, your code is more buautiful than mine 👍
So i closed the PR, please let me know when your is merged, thanks~

[Mithgol]

@jeremial

You should just hit the subscribe button for that PR and then GitHub will let you know when it's merged.

[wyntau]

@Mithgol thanks very much!! I didn't even know the subscribe button until you told me. Thank you very much 👍