Emacs/docs/latest/emacs/File-Name-Cache
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18.17 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. (However, note that the C-TAB character cannot be typed on most text 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, usinglocate
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 whose value is a list of directories, likeload-path
. - M-x file-cache-clear-cache RET
- Clear the cache; that is, remove all file names from it.
The file name cache is not persistent: it is kept and maintained only for the duration of the Emacs session. You can view the contents of the cache with the file-cache-display
command.
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