Function: tramp-sudoedit-handle-expand-file-name

tramp-sudoedit-handle-expand-file-name is a byte-compiled function defined in tramp-sudoedit.el.gz.

Signature

(tramp-sudoedit-handle-expand-file-name NAME &optional DIR)

Documentation

Like expand-file-name for Tramp files.

If the localname part of the given file name starts with "/../" then the result will be a local, non-Tramp, file name.

Source Code

;; Defined in /usr/src/emacs/lisp/net/tramp-sudoedit.el.gz
(defun tramp-sudoedit-handle-expand-file-name (name &optional dir)
  "Like `expand-file-name' for Tramp files.
If the localname part of the given file name starts with \"/../\" then
the result will be a local, non-Tramp, file name."
  ;; If DIR is not given, use `default-directory' or "/".
  (setq dir (or dir default-directory "/"))
  ;; Handle empty NAME.
  (when (string-empty-p name)
    (setq name "."))
  ;; Unless NAME is absolute, concat DIR and NAME.
  (unless (file-name-absolute-p name)
    (setq name (tramp-compat-file-name-concat dir name)))
  ;; If NAME is not a Tramp file, run the real handler.
  (if (not (tramp-tramp-file-p name))
      (tramp-run-real-handler #'expand-file-name (list name))
    (with-parsed-tramp-file-name name nil
      ;; Tilde expansion if necessary.  We cannot accept "~/", because
      ;; under sudo "~/" is expanded to the local user home directory
      ;; but to the root home directory.
      (when (tramp-string-empty-or-nil-p localname)
	(setq localname "~"))
      ;; Tilde expansion shall be possible also for quoted localname.
      (when (string-prefix-p "~" (file-name-unquote localname))
	(setq localname (file-name-unquote localname)))
      (unless (file-name-absolute-p localname)
	(setq localname (format "~%s/%s" user localname)))
      (when (string-match
	     (rx bos "~" (group (* (not "/"))) (group (* nonl)) eos) localname)
	(let ((uname (match-string 1 localname))
	      (fname (match-string 2 localname))
	      hname)
	  (when (tramp-string-empty-or-nil-p uname)
	    (setq uname user))
	  (when (setq hname (tramp-get-home-directory v uname))
	    (setq localname (concat hname fname)))))
      ;; Do not keep "/..".
      (when (string-match-p (rx bos "/" (** 1 2 ".") eos) localname)
	(setq localname "/"))
      ;; Do normal `expand-file-name' (this does "~user/", "/./" and "/../").
      (tramp-make-tramp-file-name
       v (if (string-prefix-p "~" localname)
	     localname
	   (tramp-run-real-handler
	    #'expand-file-name (list localname)))))))