console.log: wrong output when using '\' in Object keys

[avetisk]

Case 1

Adds an extra '' when key is ending with 2+ ''.

var obj = {
  '\\': 1,
  '\\\\': 2,
  '\\\\\\': 3,
  '\\\\\\\\': 4,
};
console.log(obj);

Expected:

{ '\': 1, '\\': 2, '\\\': 3, '\\\\': 4 }

Got:

{ '\': 1, '\\\': 2, '\\\\\': 3, '\\\\\\\': 4 }

Case 2

Leaves '' as they are

var obj = {
  '\\sometext': 1,
  '\\\\sometext': 2,
  '\\\\\\sometext': 3,
  '\\\\\\\\sometext': 4,
};
console.log(obj);

Expected:

{ '\sometext': 1, '\\sometext': 2, '\\\sometext': 3, '\\\\sometext': 4 }

Got:

{ '\\sometext': 1, '\\\\sometext': 2, '\\\\\\sometext': 3, '\\\\\\\\sometext': 4 }

Case 3

Any following '' is not resolved any more.

var obj = {
  '\\': 1,
  '\\\\': 2,
  '\\\\\\': 3,
  '\\\\\\\\': 4,
};
console.log(obj, 'a\nb', '\\', '\\\\', '\\\\\\');

Expected:

{ '\': 1, '\\': 2, '\\\': 3, '\\\\': 4 } 'a
b' '\' '\\' '\\\'

Got:

{ '\': 1, '\\\': 2, '\\\\\': 3, '\\\\\\\': 4 } 'a\nb' '\\' '\\\\' '\\\\\\'

Nota Bene

It's really about console as this produces no error:

assert(Object.keys({'\\': 1, '\\\\': 2})[1].length === 2)

Info

• node 0.10.22
• tested both on OS X 10.9 and Ubuntu 13.04

[geggleto]

Nothing wrong here...
has to do with Console.Log....using Util.Inspect iirc.

var obj = {
  '\\': 1,
  '\\\\': 2,
  '\\\\\\': 3,
  '\\\\\\\\': 4,
};

if (obj['\\'] === 1)
{
    console.log("Found");
}

C:\node\issue6835>node -v
v0.10.20

C:\node\issue6835>node test.js
Found

[avetisk]

@geggleto: it seems right:

22c68fd/lib/console.js#L52:

Console.prototype.log = function() {
  this._stdout.write(util.format.apply(this, arguments) + '\n');
};

So I guess the original bug is in util.format.