Reading $all stream is not possible with read_all_events_forward

[paneq]

client.read_all_events_forward("$all")

generates starting point of

http://localhost:2113/streams/$all/0/forward/20

instead of

http://127.0.0.1:2113/streams/$all/00000000000000000000000000000000/forward/20

Based on:

(master) > curl -i 'http://127.0.0.1:2113/streams/$all' -u admin:changeit
HTTP/1.1 200 OK
Access-Control-Allow-Methods: POST, DELETE, GET, GET, OPTIONS
Access-Control-Allow-Headers: Content-Type, X-Requested-With, X-Forwarded-Host, X-Forwarded-Prefix, X-PINGOTHER, Authorization, ES-LongPoll, ES-ExpectedVersion, ES-EventId, ES-EventType, ES-RequiresMaster, ES-HardDelete, ES-ResolveLinkTos
Access-Control-Allow-Origin: *
Access-Control-Expose-Headers: Location, ES-Position, ES-CurrentVersion
Cache-Control: max-age=0, no-cache, must-revalidate
Vary: Accept
ETag: "20591257;1415427280"
Content-Type: application/vnd.eventstore.streamdesc+json; charset=utf-8
Server: Mono-HTTPAPI/1.0
Date: Tue, 12 Sep 2017 09:47:42 GMT
Content-Length: 12236
Keep-Alive: timeout=15,max=100

{
  "title": "All events",
  "id": "http://127.0.0.1:2113/streams/%24all",
  "updated": "2017-09-12T09:47:17.795685Z",
  "author": {
    "name": "EventStore"
  },
  "headOfStream": false,
  "links": [
    {
      "uri": "http://127.0.0.1:2113/streams/%24all",
      "relation": "self"
    },
    {
      "uri": "http://127.0.0.1:2113/streams/%24all/head/backward/20",
      "relation": "first"
    },
    {
      "uri": "http://127.0.0.1:2113/streams/%24all/00000000000000000000000000000000/forward/20",
      "relation": "last"
    },
    {
      "uri": "http://127.0.0.1:2113/streams/%24all/000000000135F366000000000135F366/backward/20",
      "relation": "next"
    },
    {
      "uri": "http://127.0.0.1:2113/streams/%24all/00000000013A6BE200000000013A6BE2/forward/20",
      "relation": "previous"
    },
    {
      "uri": "http://127.0.0.1:2113/streams/%24all/metadata",
      "relation": "metadata"
    }
  ],

[paneq]

It's possible to get the first page with

client.read_events_forward("$all", "00000000000000000000000000000000", 20)

but it does not return the URL to previous so paginating is not possible