The fact is that my life is a continous fight with console encoding. This is the dark side of being Hungarian in the world of computers (despite the many Hungarian founder fathers of computing). :-(((
It was never perfect on my previous computer with Hungarian Windows XP Prof. That computer is already dead.
Than I changed to a laptop that had an English XP Home. I was glad to see that I could write the encoding found in output of "mode" command to user-config.py, and everything was perfect! For a while.
My present computer is a Hungarian Windows 7 (6.1.7601). Mode/chchp commands write codepage 852. I wrote it to user-config.py but was not good. I had to experiment a lot.
The good news is that I tried it again now after your nightly commits to Pywiki and it seems to be good!!! That's great! I can write accented Hungarian letters again. (By this time I could do it at the command prompt but not witih Pywikibot, e.g. when letting replace.py to ask the old and new text or summary).
Euro sign works like this: I copied € from Wikipedia to command line. It appeared as a gray "?" again (see the screenshot in the other thread), but was interpreted correctly.
C:\Pywikipedia>p replace.py -page:User:BinBot/semmi
Please enter the text that should be replaced: ?
Please enter the new text: ee
[...]
Press Enter to use this default message, or enter a description of the changes your bot will make: árvíztűrő tehéntúró
Getting 1 page from wikipedia:hu...