Using .process.subscribe() messes up the display.

[yaru22]

If I use the following code, questions are displayed properly (see the screenshot below):

var _ = require('lodash');
var inquirer = require('inquirer');

inquirer.prompt([
  {
    type: 'list',
    name: 'questionA',
    message: 'Question A?',
    choices: ['Yes', 'No'],
  },
  {
    type: 'list',
    name: 'questionB',
    message: 'Question B?',
    choices: ['Yes', 'No'],
  },
])

However, if I use .process.subscribe(), it messes up the display a bit.

var _ = require('lodash');
var inquirer = require('inquirer');

inquirer.prompt([
  {
    type: 'list',
    name: 'questionA',
    message: 'Question A?',
    choices: ['Yes', 'No'],
  },
  {
    type: 'list',
    name: 'questionB',
    message: 'Question B?',
    choices: ['Yes', 'No'],
  },
])
.process.subscribe(_.noop, _.noop, function () {
  console.log('Completed.');
});

I'm using version 0.9.0 with Node 0.12.7 on Mac.

Thanks.

[rtsao]

I'm getting the same issue with duplicate output

Possibly related: #209

[SBoudrias]

Ok, I could reproduce this bug. Not sure what on rx.js side is breaking that flow. I'll investigate.

[SBoudrias]

Well, the bug is pretty simple to find.

Basically when you add an extra listeners, each items in the array get processed again (this here is going to get called twice https://github.com/SBoudrias/Inquirer.js/blob/master/lib/ui/prompt.js#L61).

Gonna have to read RX documentation to see how to not rerun the whole process for each listeners... Pr welcomed.