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I am currently in the Netherlands, but coming from Russia originally. 11 years ago, many programmers in Russia didn't have a good command of English, hence the comments were often in Russian. Variable names and function methods were still in English, or what people thought was English, simply because corresponding Russian words tend to be long, and sometimes seem to obscure the sense. Now it's probably like everywhere: the more professional people are, the more the chance that their comments are in English.

In the Netherlands, I have seen Dutch comments and variable / method names in the company where the majority of the programmers were Dutch (such companies do exist:) ) But it was the only case.

By the way, the question 'Did you know the Latin alphabet until you came to the West' used to annoy me, until I have learned to laugh at it:)