Why are all programming languages in English?

Last week I was at the CSTA Computer Science & Information Technology conference in New York City. One of the great thing about events like this is the hallway conversations that just happen. When you get a lot of interesting people together the conversations are interesting by default. I had one such conversation with Dave Reed, computer science faculty at Creighton University and past Chief Reader of the Advanced Placement Computer Science exam. We started by talking about programming by people whose language is not English. The keywords they use are, for almost all languages, in English. Comments, variables, user written classes and methods though are in their own language. How confusing might that be? Dave has used a program written in German in some of his classes and asked students to explain what is going on from context. That’s an interesting exercise for sure. On the other hand why not translate the keywords?

Many years ago I heard Grace Hopper talk about an early compiler. As I recall they wrote this sample compiler and finished it before it was due. They thought about the fact that keywords are really just symbolic so why not make them in other languages. They wound up adding support for several languages into the compiler. Unfortunately the committee who reviewed the final project thought that was far to complicated to actually work and concluded the demo was faked. Ah, the early days on computers when people really didn’t understand what they could do. To this day compilers seem to only understand keywords in one language and that language is almost always English.

It is not just Americans or even other English as a first language speakers who are doing this. Niklaus Wirth who designed PASCAL among other languages was Swiss. No doubt he could have used any one of several other natural languages but he used English. Off hand I don’t know of programming languages that use non English keywords. If there are some, and there must right, they don’t appear to be common. Anyone know any?

I’m not sure why this is. Most modern computer design was done in English language countries but that should not be a limitation. The other thing I really don’t understand is why IDEs don’t support non-English keywords. I mean how hard could it be to add a parser that uses different (or additional) keywords? It’s been a long time since my graduate course in compiler design but as I recall parsing was only a small part of the whole process. Converting things to meta data should be a simple matter. Expensive perhaps but not critically so. Anyone know of IDEs that do this sort of thing? And why are people whose first languages not designing their own languages using non-English keywords? I can understand something about wanting widespread acceptance and that most experienced programmers know English keywords if not a real working knowledge of English. On the other hand having kids learn in their native language strikes me as potentially a good thing.

Just something to wonder about today.

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