Automatic six-bit coding for Canon 50/1.2?

[squirrel$$$bandit]

Those of you who use the Canon 50/1.2 on a digital M: is there a six-bit code that works well to correct the vignetting, or do you manually code it in the menu as a 1.2 Noctilux? (Unless I'm mistaken, I don't think that Noct has a six-bit code you can marker onto an adapter.)

 

[B-9]

There is a 6-bit code for the 1.0 Noctilux, I didn't see much difference between no coding.

This is where I got my info on the codes.
http://www.l-camera-forum.com/leica-news/leica-lens-codes/

 

[squirrel$$$bandit]

Thanks! Yeah, I'm familiar with the code list, but there are more lenses without automatic codes that can be manually selected from a menu on the M9 (and I assume cameras after that, too). Dante uses the 1.2 Noct from that list, I believe, but I'm wondering if there's anything on the six-bit list that approximates the Canon's vignetting signature.