Eh, wait. Maybe for comments and strings, but we, the non-ASCII language users such as Spanish, avoided to put ñ's and accented chars as _code_ almost as a religious dogma.

Tildes in Spanish are just used to mark the stressed syllabe when it's outside the stressing rules, and the diaeresis it's to make the 'u' non silent in gue/gui/que/qui. So if we read "funcion" without being written "función", don't worry, we aren't writting a literary test, it's code.

I'd hate to debug code written in Chinese instead of English. And Golang allows that I think, and lots of languages too.