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-;;; system.el --- Load system-dependendant settings -*- lexical-binding: t; -*-
-
-;;; Commentary:
-
-;; When using Emacs on multiple computers, some variables and functions need
-;; different definitions.  This library is built to assist in working with
-;; different system configurations for Emacs.
-
-;;; TODO:
-
-;; machine.el
-;; machine-case to switch on machine
-;; 
-
-;;; Code:
-
-(require 'cl-lib)
-
-(defgroup system nil
-  "System-specific configurations."
-  :group 'emacs
-  :prefix "system-")
-
-;;; Settings
-
-(defcustom system-load-directory (locate-user-emacs-file "systems"
-                                                         "~/.emacs-systems")
-  "The directory where system-specific configurations live."
-  :type 'file)
-
-;; These `defcustom's are best-guess defaults.
-
-(defcustom system-default-font (cond
-                                 ((memq system-type '(ms-dos windows-nt))
-                                  "Consolas")
-                                 (t "monospace"))
-  "The font used for the `default' face.
-Set this in your system files."
-  :type 'string)
-
-(defcustom system-default-height 100
-  "The height used for the `default' face.
-Set this in your system files."
-  :type 'number)
-
-(defcustom system-variable-pitch-font (cond
-                                       ((memq system-type '(ms-dos windows-nt))
-                                        "Arial")
-                                       (t "sans-serif"))
-  "The font used for the `variable-pitch' face.
-Set this in your system files."
-  :type 'string)
-
-(defcustom system-variable-pitch-height 1.0
-  "The height used for the `variable-pitch' face.
-A floating-point number is recommended, since that makes it
-relative to the `default' face height.
-
-Set this in your system files."
-  :type 'number)
-
-(defcustom system-files-order '(:type :name :user)
-  "The order to load `system-files' in.
-The elements of this list correspond to the keys in
-`system-system'."
-  :type '(list (const :tag "System type" :type)
-               (const :tag "System name" :name)
-               (const :tag "Current user" :user)))
-
-;;; Variables
-
-(defvar system-system nil
-  "Plist of systems that Emacs is in.
-The keys are as follows:
-
-- :name - `system-name'
-- :type - `system-type'
-- :user - `user-login-name'
-
-Each value is made safe to be a file name by passing through
-`system--safe'.
-
-Do not edit this by hand.  Instead, call `system-get-systems'.")
-
-(defvar system-files nil
-  "List of files to load for system-specific configuration.
-Do not edit this by hand.  Instead, call `system-get-system-files'.")
-
-
-;;; Functions
-
-(defun system--warn (message &rest args)
-  "Display a system-file warning message.
-This function is like `warn', except it uses a `system' type."
-  (display-warning 'system (apply #'format-message message args)))
-
-(defun system--safe (str)
-  "Make STR safe for a file name."
-  (let ((bad-char-regexp ))
-    (downcase (string-trim
-               (replace-regexp-in-string "[#%&{}\$!'\":@<>*?/ \r\n\t+`|=]+"
-                                         "-" str)
-               "-" "-"))))
-
-(defun system-get-systems ()
-  "Determine the current system(s).
-This system updates `system-system', which see."
-  ;; Add system-name
-  (setf (plist-get system-system :name)
-        (intern (system--safe (system-name))))
-  ;; Add system-type
-  (setf (plist-get system-system :type)
-        (intern (system--safe (symbol-name system-type))))
-  ;; Add current user
-  (setf (plist-get system-system :user)
-        ;; Use `user-real-login-name' in case Emacs gets called under su.
-        (intern (system--safe (user-real-login-name))))
-  system-system)
-
-(defun system-get-files ()
-  "Determine the current systems' load-files.
-The system load-files should live in `system-load-directory', and
-named using either the raw name given by the values of
-`system-system', or that name prepended with the type, e.g.,
-\"name-bob.el\", for a system named \"bob\".
-
-The second form of file-name is to work around name collisions,
-e.g. if a there's a user named \"bob\" and a system named
-\"bob\".
-
-This function updates `system-files'."
-  ;; Get systems
-  (system-get-systems)
-  ;; Re-set `system-files'
-  (setq system-files nil)
-
-  (let (ret)
-    (dolist (key (reverse system-files-order))
-      (let* ((val (plist-get system-system key))
-             (key-val (intern (system--safe (format "%s-%s" key val)))))
-        (push (list key-val val) ret)))
-
-    ;; Update `system-files'.
-    (setq system-files ret)))
-
-;;;###autoload
-(defun system-settings-load (&optional error nomessage)
-  "Load system settings from `system-files'.
-Each list in `system-files' will be considered item-by-item; the
-first found file in each will be loaded.
-
-ERROR determines how to deal with errors: if nil, warn the user
-when no system-files can be found or when the system being used
-cannot be determined.  If t, these warnings are elevated to
-errors.  Any other value ignores the warnings completely.
-
-NOMESSAGE is passed directly to `load'."
-  (system-get-files)
-  (if system-files
-      (let (files-loaded)
-        (dolist (ss system-files)
-          (catch :done
-            (dolist (s ss)
-              (let ((fn (expand-file-name (format "%s" s)
-                                          system-load-directory)))
-                (when (load fn t nomessage)
-                  (push fn files-loaded)
-                  (throw :done nil))))))
-        (unless files-loaded
-          (cond ((eq error t) (error "Error loading system-files.")
-                 (null error) (system--warn "Couldn't load system-files."))))
-        files-loaded)
-    (funcall (cond ((eq error t) #'error)
-                   ((null error) #'system--warn)
-                   (t #'ignore))
-             "Couldn't determine the system being used.")))
-
-(provide 'system)
-;;; system.el ends here