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I've seen how to check if a file exists (file-exists-p), but how to check if a directory exists?

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From elisp manual:

-- Function: file-directory-p filename

This function returns ‘t’ if FILENAME is the name of an existing directory, ‘nil’ otherwise.

See also its docstring, with a note concerning symlinks:

(file-directory-p FILENAME)

Return t if FILENAME names an existing directory. Symbolic links to directories count as directories. See ‘file-symlink-p’ to distinguish symlinks.

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15

file-directory-p is your friend.

Found using C-u C-h a directory RET and browsing the result.

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  • @Drew Thanks, but I had copied the key sequence wrong. Fixed now. Commented Jul 25, 2017 at 20:10

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