improve code search since google code search shut down
improve code search since google code search shut down

zuoshifan/emacs.d,zuoshifan/emacs.d,zuoshifan/emacs.d,YangXin/emacs.d,zuoshifan/emacs.d,zuoshifan/emacs.d,YangXin/emacs.d,zuoshifan/emacs.d,zuoshifan/emacs.d,zuoshifan/emacs.d,zuoshifan/emacs.d