odd behavior of narg:2 versus duplicate-arguments-array:false

[starpit]

const P = require('yargs-parser')
P('foo -p x y', { narg: { p: 2 } })
{ _: [ 'foo' ], p: [ 'x', 'y' ] }

i.e. this results in the expected {x:'y'} binding.

whereas:

P('foo -p x y', { narg: { p: 2 }, configuration: {  'duplicate-arguments-array': false } })
{ _: [ 'foo' ], p: 'y' }

which seems buggy, and contrary to the documentation. i would expect the resulting binding to be the same in both cases.

[bcoe]

@starpit this does seem incorrect to me; definitely feels like duplicate-arguments-array is interfering with nargs. If you have any more cycles to dig into this, I would happily accept a patch.

Otherwise I've labeled this as a bug and hopefully we can dig into it soon.