Based on the pinyin based Chinese input method I've seen, I guess the user will want to switch to US for entering code, right? Otherwise, the IME will offer Chinese characters...

What I like about using US Intl (I've modified it slightly) is that no switching is required, I can conveniently enter both the programming related characters (such as curly braces which require gymnastics with a German keyboard layout) and the German specific characters such as umlauts.

But I can't imagine that this could be possible for Chinese without switching modes (or input methods or keyboar layouts).