Does anyone know if papyrus scripts written in english will work for non-english games? or does papyrus syntax already account for multiple languages?

papyrus is a language of it's own. And since it is the compiled script that's used it doesn't matter if you're playing the french, german, english or russion versino of the game.

The only place Language comes into it is when recording dialog and subtitles.

Wikipedia says it better than I can do:

If you're interested http://en.wikipedia.org/wiki/Non-English-based_programming_languages is a decent little read.

Well one factor is that keyboards with japanese and chinese characters are hard to get in many places, and a programming language needs to be comprehensible to the large majority of programmers (Who are predominantly English speakers) - would you really want to program in some of the http://en.wikipedia.org/wiki/Brain%5Bcensored%5Dlanguages?

Standardisation is a good but sadly very rare thing. I consider it a good thing that there is a dominating language for the choice of keywords in programming languages. It makes transition from one language to another a lot easier.

The only thing I have a hard time with are the conventions regarding what to name in lower case and what in upper case. As a german it's rather strange that most programmers use upper case names for functions and ower case vor parameters, based on german grammer the opposite makes a lot more sense and programming in OOP Languages comes almost down to writting novels if you stick to full nouns/verbs as names instead of using abbreveations.