Should you use international identifiers in Java/C#?

Question

C# and Java allow almost any character in class names, method names, local variables, etc.. Is it bad practice to use non-ASCII characters, testing the boundaries of poor e

Answer 1

There is another hazzard to using non-ASCII characters, though it will probably only bite in obscure cases. The allowed characters are defined in terms of the methods Character.isJavaIdentifierStart(int) and Character.isJavaIdentifierPart(int), which are defined in terms of Unicode. However, the exact version of Unicode used depends on the version Java platform, as specified in the documentation for java.lang.Character.

Since character properties change slightly from one Unicode version to the next, it's possible (but probably very unlikely) you could have identifiers that are valid in one version of Java, but not in the next.