Pinyin entry support for Mandarin Chinese

[aupiff]

On Mac OS X, the built-in Mandarin pinyin system fails to work properly. Each phonetic character is immediately rendered on screen but the cursor does not advance; the space directly under the cursor is continuously replaced by whatever character was typed last. The pinyin system has no memory of previously typed phonetic characters so the user cannot indicate sounds longer than a single character (most sounds). The dialog box displaying potential Han characters corresponding to typed phonetic characters flashes on screen for only a moment giving the user no chance to select the desired Han character.

我们怎么办呢？

This issue might be related to #18.