> or, rather, how inaccurately does 4chan match 2ch's tripcode creation?
Perfectly (as of a year or two ago), with the only exception being that '#' is not allowed. If any other trips don't match, post them in here or something I guess.
I don't know if English-speaking projects would accept 2ch compatible tripcodes, since it involves conversion to CP932 (not "Shift_JIS") and htmlspecialchars+ENT_QUOTES.
The first generator in your link seems to do the first but not the second? I've never seen that beforec
As for the first comment on the Drupal page, wakaba's silly name generator would be better.