Add ctrlp settings and update nerdtree settings

Author: Masafumi Yokoyama

README.md

@@ -8,6 +8,7 @@
     % echo "source ~/.vim.d/leader.vim" >> ~/.vimrc
     % echo "source ~/.vim.d/plugin.vim" >> ~/.vimrc
     % echo "source ~/.vim.d/japanese.vim" >> ~/.vimrc
+    % echo "source ~/.vim.d/plugin-settings/ctrlp.vim" >> ~/.vimrc  # experimental
 
 ## カスタマイズ
 
@@ -29,3 +30,4 @@ TODO
 * [VimScriptざっくりチュートリアル(バッファ編集編) - かせいさんとこ](http://d.hatena.ne.jp/kasei_san/20130714/p1)
 * [Vim でコピペするときの Tips - 反省はしても後悔はしない](http://cohama.hateblo.jp/entry/20130108/1357664352)
 * [Vimでの日本語編集がはかどるキーマッピング - Qiita](https://qiita.com/ssh0/items/9e7f0d8b8f033183dd0b)
+* [ctrlp.vimの使い方まとめ - Qiita](https://qiita.com/oahiroaki/items/d71337fb9d28303a54a8)

leader.vim

@@ -29,7 +29,7 @@ noremap <Leader>qo :copen<CR>
 noremap <Leader>b :BufExplorer<CR>
 
 " 開いているファイルをNERDTreeで表示
-noremap <Leader>tf :NERDTreeFind<CR>
+noremap <Leader>t :NERDTreeFind<CR>
 
 " カーソル位置の単語でgrep
 "" tpope/vim-fugitive

plugin-settings/ctrlp.vim

@@ -0,0 +1,68 @@
+" ctrlpvim/ctrlp.vim
+
+let NERDTreeQuitOnOpen = 1
+let NERDTreeWinSize = 75
+if !argc()
+  autocmd vimenter * NERDTreeClose
+  autocmd vimenter * CtrlPMRUFiles
+endif
+
+" ref: https://postd.cc/how-to-boost-your-vim-productivity/
+let g:ctrlp_use_caching = 0
+if executable('pt')
+  set grepprg=pt\ --nogroup\ --nocolor
+  let g:ctrlp_user_command = 'pt %s -l --nocolor -g ""'
+elseif executable('ag')
+  set grepprg=ag\ --nogroup\ --nocolor
+  let g:ctrlp_user_command = 'ag %s -l --nocolor -g ""'
+else
+  let g:ctrlp_user_command = ['.git', 'cd %s && git ls-files . -co --exclude-standard', 'find %s -type f']
+endif
+
+" ref: https://qiita.com/oahiroaki/items/d71337fb9d28303a54a8
+nnoremap <Leader>e :<C-u>CtrlPMRUFiles<CR>
+nnoremap <Leader>ea :<C-u>CtrlPMixed<CR>
+nnoremap <Leader>eb :<C-u>CtrlPBuffer<CR>
+nnoremap <Leader>ed :<C-u>CtrlPDir<CR>
+nnoremap <Leader>ef :<C-u>CtrlP<CR>
+nnoremap <Leader>el :<C-u>CtrlPLine<CR>
+nnoremap <Leader>em :<C-u>CtrlPMRUFiles<CR>
+nnoremap <Leader>eq :<C-u>CtrlPQuickfix<CR>
+nnoremap <Leader>es :<C-u>CtrlPMixed<CR>
+nnoremap <Leader>et :<C-u>CtrlPTag<CR>
+
+" ref: https://qiita.com/tekkoc/items/8c78e01167953ab513f9
+let g:ctrlp_prompt_mappings = {
+  \ 'PrtBS()':              ['<c-h>'],
+  \ 'PrtDeleteWord()':      ['<c-w>'],
+  \ 'PrtCurEnd()':          ['<c-e>'],
+  \ 'PrtCurLeft()':         ['<c-b>'],
+  \ 'PrtCurRight()':        ['<c-f>'],
+  \ 'PrtSelectMove("j")':   ['<c-j>'],
+  \ 'PrtSelectMove("k")':   ['<c-k>'],
+  \ 'PrtHistory(-1)':       ['<c-n>'],
+  \ 'PrtHistory(1)':        ['<c-p>'],
+  \ 'AcceptSelection("e")': ['<cr>'],
+  \ 'ToggleRegex()':        ['<c-r>'],
+  \ 'ToggleByFname()':      ['<c-d>'],
+  \ 'PrtExit()':            ['<c-l>', '<esc>', '<c-c>'],
+  \ 'ToggleFocus()':        ['<nop>'],
+  \ 'PrtExpandDir()':       ['<nop>'],
+  \ 'AcceptSelection("h")': ['<nop>'],
+  \ 'AcceptSelection("t")': ['<nop>'],
+  \ 'AcceptSelection("v")': ['<nop>'],
+  \ 'ToggleType(1)':        ['<nop>'],
+  \ 'ToggleType(-1)':       ['<nop>'],
+  \ 'PrtInsert()':          ['<nop>'],
+  \ 'PrtCurStart()':        ['<nop>'],
+  \ 'PrtClearCache()':      ['<nop>'],
+  \ 'PrtDeleteEnt()':       ['<nop>'],
+  \ 'CreateNewFile()':      ['<nop>'],
+  \ 'MarkToOpen()':         ['<nop>'],
+  \ 'OpenMulti()':          ['<nop>'],
+  \ 'PrtDelete()':          ['<nop>'],
+  \ 'PrtSelectMove("t")':   ['<nop>'],
+  \ 'PrtSelectMove("b")':   ['<nop>'],
+  \ 'PrtSelectMove("u")':   ['<nop>'],
+  \ 'PrtSelectMove("d")':   ['<nop>'],
+  \ }