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(emacs)File Name Cache

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File Name Cache
===============

   You can use the "file name cache" to make it easy to locate a file
by name, without having to remember exactly where it is located.  When
typing a file name in the minibuffer, `C-<tab>'
(`file-cache-minibuffer-complete') completes it using the file name
cache.  If you repeat `C-<tab>', that cycles through the possible
completions of what you had originally typed.  Note that the `C-<tab>'
character cannot be typed on most text-only terminals.

   The file name cache does not fill up automatically.  Instead, you
load file names into the cache using these commands:

`M-x file-cache-add-directory <RET> DIRECTORY <RET>'
     Add each file name in DIRECTORY to the file name cache.

`M-x file-cache-add-directory-using-find <RET> DIRECTORY <RET>'
     Add each file name in DIRECTORY and all of its nested
     subdirectories to the file name cache.

`M-x file-cache-add-directory-using-locate <RET> DIRECTORY <RET>'
     Add each file name in DIRECTORY and all of its nested
     subdirectories to the file name cache, using `locate' to find them
     all.

`M-x file-cache-add-directory-list <RET> VARIABLE <RET>'
     Add each file name in each directory listed in VARIABLE to the
     file name cache.  VARIABLE should be a Lisp variable such as
     `load-path' or `exec-path', whose value is a list of directory
     names.

`M-x file-cache-clear-cache <RET>'
     Clear the cache; that is, remove all file names from it.