这是不可能的，但是 最近讨论过.链接中建议的解决方法:

It's not possible, but has been discussed recently. Proposed workaround in link:

你可以把*.dll 放到.gitignore 文件然后git grep --exclude-standard.

You can put *.dll to .gitignore file then git grep --exclude-standard.

编辑请参阅onlynone 的答案，因为 git 1.9.0 是可能的.

EDIT see onlynone's answer, since git 1.9.0 it's possible.