Don't display a thousands seperator in binary mode

I switched to programmers mode in gcalctool and also enabled in prefs, that a thousands seperator is to be shown.
I then switch to binary mode.

Now I entered a number: 1111001
It's displayed as: 1'111'001

Ie. every 3 digits, a thousands seperator (the ' in my case) is added.

For binary mode, this doesn't make much sense. Instead, it would be useful, if every 4 digits a space would be added. Just like it's done in the "display" above the keys.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: gcalctool 6.2.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Wed Nov 2 15:13:00 2011
ExecutablePath: /usr/bin/gcalctool
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: gcalctool
UpgradeStatus: Upgraded to oneiric on 2011-10-18 (15 days ago)