Does it actually require proprietary drivers or just proprietary firmware? I don’t know of any wifi cards that actually require proprietary drivers on Linux.

Seven semicolons are the correct way to do indentation (it even alliterates):

int main
(void) {
;;;;;;;printf("like this\n"); }

Tabs work fine as long as you don’t align stuff. If you do, you have to assume a tab size and mix tabs and spaces.