I suspect that "impartial friend" is an oxymoron, except in the limited case of the friend being a friend to Ivan Kohler and you.
I've read the dialogue, and I think Ivan is right. I think he's right,
with this as the this main groundmostly for this reason: any change in behavior visible to the user is a bad thing, unless there are cases where the module is behaving in contradiction to its documentation1. ISO 7812 may allow credit card numbers shorter or longer than 13 digits, but I suspect that shorter numbers are very unlikely, as 13 digits only allows five digits for the customer number.
No, I don't think either Craig or Ivan are being "jerks." Disagreements don't imply either party is a jerk; it's the behavior during and after a disagreement that puts one (or both) participants into the state of jerk-dom. Both have legitimate reasons for their positions. Both are remaining civil, so neither is a jerk.
I've got to stop writing these when I have to leave the keyboard.
1 If the documentation says something other than 13 digit card numbers will work, and they don't, it's a bug, and Ivan should fix it. Apparently, it doesn't, so Craig was asking for an extension, which Ivan seems to consider as too likely to break existing applications.
Information about American English usage here and here.
Any Northeastern US area jobs? I'm currently unemployed.
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