CtrlPLine only searches in current buffer

[dragonxlwang]

I have been experiencing difficulty in searching all buffers opened using CtrlpLine.

Here's a minimal vimrc that I used to reproduce:
https://github.com/kien/ctrlp.vim

If open vim with multiple files, kien/ctrlp.vim can search through all buffers but ctrlpvim/ctrlp.vim only search the current buffer before jumping to ctrlp.

Please let me know how to revert the CtrlPLine behavior to search all opened buffers.

Thanks,

[dragonxlwang]

Thanks!