Go2将修改导出规则,只有小写字母和"_"开头的不导出. 中文等不区分大小写的标识符默认导出.

A solution that's been kicking around for a while:

For Go 2 (can't do it before then): Change the definition to "lower case letters and _ are package-local; all else is exported". Then with non-cased languages,such as Japanese,we can write 日本語 for an exported name and _日本語 for a local name. This rule has no effect,relative to the Go 1 rule,with cased languages. They behave exactly the same.

http://code.google.com/p/go/issues/detail?id=5763