实际上在Mac上使用vim 7.2，星号搜索完全可以正常工作

Actually using vim 7.2 on Mac, star search exactly works as you would like it to do.

编辑：检查您的'iskeyword'（：set iskeyword）设置为什么，因为星号搜索基于此选项来查找单词搜索词。

Check what your 'iskeyword' (:set iskeyword) is set to because star search is based on this option to find the word search term.

或者，您可以使用'g *'（：help gstar）来部分搜索光标位于上方的单词。

Alternatively, you could could use 'g*' (:help gstar) to get a partial search for the word the cursor is over.

希望这会有所帮助。