Search current completion options in CtrlP

All this plugin provides is a mapping: <Plug>(ctrlp_complete)

Map it like this to use <C-f> to search completions when you can see a pum.

imap <expr> <C-f> pumvisible() ? '<Plug>(ctrlp_complete)' : '<C-f>'

If you don't use menu or menuone as a completeopt:

imap <C-f> <Plug>(ctrlp_complete)

Start a completion (e.g. <C-x><C-o>) and press your mapping. This will open CtrlP where you can search all possible completions.

There is also an autocmd: User ctrlp_complete. When this autocmd is triggered the selected completion is inserted and you're in insert mode again.

" Always add a space after ctrlp complete has inserted your selection.
autocmd User ctrlp_complete call feedkeys(' ', 'n')

When you're using the autocmd and want to select an entry without triggering the autocmd you can use <C-s> (mnemonic: silent). It is the mapping for opening in a horizontal split. So by default <C-CR> and <C-x> work as well.

You have to have CtrlP installed. Install this plugin the same way.

Your Vim needs to support <CMD> mappings. :h <Cmd> should exist.

CtrlP Complete is distributed under Vim's license.

This plugin is based on this idea.