ファイルパス情報の参照

.vimrcでの記述例

 let g:NERDTreeBookmarksFile = expand("%p:h") . "/.NERDTreeBookmarks"

ヘルプ

 help filename-modifiers

 Examples, when the file name is "src/version.c", current dir
 "/home/mool/vim": >
  :p			/home/mool/vim/src/version.c
  :p:.				       src/version.c
  :p:~				 ~/vim/src/version.c
  :h				       src
  :p:h			/home/mool/vim/src
  :p:h:h		/home/mool/vim
  :t					   version.c
  :p:t					   version.c
  :r				       src/version
  :p:r			/home/mool/vim/src/version
  :t:r					   version
  :e						   c
  :s?version?main?		       src/main.c
  :s?version?main?:p	/home/mool/vim/src/main.c
  :p:gs?/?\\?		\home\mool\vim\src\version.c

参考

• http://nanasi.jp/articles/code/io/file-path.html