source: git/emacs/.emacs-singular @ ab733d

;;; Emacs edit mode for this file is  -*- Emacs-Lisp -*-
;;; $Id: .emacs-singular,v 1.4 1999-09-08 18:21:58 wichmann Exp $

;;;
;;; .emacs-singular - Emacs initialization file to use for
;;;                   Singular interactive mode.
;;;
;;; How you use this file very much depends on your attitude
;;; towards Emacs:
;;;
;;; 1) If you are going to use Emacs solely as frontend to
;;;    Singular you do not have to worry at all about this file.
;;; 2) If you are already an experienced Emacs user you may
;;;    want to copy this file's contents to your .emacs file.
;;; 3) If you are planning to become an experienced Emacs user
;;;    you may use this file as starting point for your .emacs
;;;    file, that is, for your Emacs initialization file.  Simply
;;;    copy it to your home directory and rename it to ".emacs"
;;;    (without the quotes, of course).  Then edit it as
;;;    described below.
;;;
;;; In cases 2) and 3) you should be careful what exactly to copy
;;; to your .emacs file.  In general, you need the following:
;;;
;;; o the hook-customizations with `add-hook';
;;; o the pre-customized settings with `custom-set-variables' and
;;;   `custom-set-faces';
;;; o the code which creates menus for starting Singular;
;;; o the code which loads singular.el (located at the end of
;;;   this file) you have to replace by something else, for
;;;   example, an `autoload'.
;;;
;;; Here is how the Singular customization in your .emacs may
;;; look like:
;;;
;;; ;; extra key bindings
;;; (add-hook 'singular-interactive-mode-hook
;;;            <... code omitted, see below for details ...>)
;;;
;;; ;; other, "non-customizable" settings
;;; (add-hook 'singular-interactive-mode-hook
;;;            <... code omitted, see below for details ...>)
;;;
;;; ;; pre-customized settings
;;; (custom-set-variables
;;;  <... code omitted, see below for details ...>)
;;; (custom-set-faces
;;;  <... code omitted, see below for details ...>)
;;;
;;; ;; add global menus for Singular
;;; <... choose your version for either Emacs or XEmacs, see below ...>
;;;
;;; ;; add Singular toolbar for XEmacs
;;; <... insert the code below if you are running XEmacs ...>
;;;
;;; ;; add Singular Emacs home directory to `load-path'
;;; (setq load-path (cons "<your-singular-emacs-home-directory>" load-path))
;;; (autoload 'singular "singular"
;;;   "Start Singular using default values." t)
;;; (autoload 'singular-other "singular"
;;;   "Ask for arguments and start Singular." t)
;;;

;; extra key bindings
(add-hook 'singular-interactive-mode-hook
          (function (lambda ()
                      ;; control cursor keys
                      (cond
                       ;; Emacs
                       ((eq singular-emacs-flavor 'emacs)
                        (local-set-key [C-prior] 'singular-scroll-right)
                        (local-set-key [C-next] 'singular-scroll-left)
                        (local-set-key [C-up] 'comint-previous-prompt)
                        (local-set-key [C-down] 'comint-next-prompt))
                       ;; XEmacs
                       (t
                        (local-set-key [(control prior)] 'singular-scroll-right)
                        (local-set-key [(control next)] 'singular-scroll-left)
                        (local-set-key [(control up)] 'comint-previous-prompt)
                        (local-set-key [(control down)] 'comint-next-prompt))))))

;; other, "non-customizable" settings
(add-hook 'singular-interactive-mode-hook
          (function (lambda () (font-lock-mode 1))))

;; this is a work-around for early version of Font Lock mode
;; which do not use `defface' to define faces.  It forces
;; `custom-set-faces' to define the faces immediately.
(make-face 'font-lock-comment-face)
(make-face 'font-lock-string-face)

;; tricky stuff: these customization settings are not used any
;; longer as soon as user saved her own to ~/.emacs-singular-cust
(setq custom-file "~/.emacs-singular-cust")
(if (file-exists-p custom-file)
    (load-file custom-file)

;; pre-customized settings
(custom-set-variables
 '(font-lock-maximum-decoration nil t)
 '(next-line-add-newlines nil)
 '(paren-mode (quote paren) nil (paren))
 '(show-paren-mode t nil (paren))
 '(singular-help-same-window t)
 '(transient-mark-mode t))
(custom-set-faces
 '(font-lock-comment-face ((t (:bold nil :foreground "Grey50"))) t)
 '(font-lock-string-face ((((class color) (background light)) (:foreground "Blue")) (((class color) (background dark)) (:foreground "LightSkyBlue"))) t)
 '(paren-match ((t (:foreground "Red"))) t)
 '(show-paren-match-face ((((class color)) (:foreground "Red")))))

)

;; update singular-emacs-home-directory
(setq singular-emacs-home-directory 
      (concat singular-emacs-home-directory
              ;; we check for trailing slash and backslash
              ;; but unconditionally insert a slash.
              ;; Hopefully that works on NT, too.
              (if (memq (aref singular-emacs-home-directory
                              (1- (length singular-emacs-home-directory)))
                        '(?/ ?\\))
                  "" "/")))

;; add global menus for Singular, Emacs version
(unless (fboundp 'add-submenu)
  (setq singular-start-map (make-sparse-keymap))
  (define-key singular-start-map [menu-bar singular]
    (cons "Singular" (make-sparse-keymap "Singular")))
  (define-key singular-start-map [menu-bar singular restart]
    '("Start..." . singular-other))
  (define-key singular-start-map [menu-bar singular start-default]
    '("Start default" . singular))
  (setq menu-bar-final-item (append '(singular) menu-bar-final-items))
  (use-local-map singular-start-map))

;; add global menus for Singular, XEmacs version
(when (fboundp 'add-submenu)
  (add-submenu nil 
               '("Singular"
                 ["Start default" singular t]
                 ["Start..." singular-other t]))
  (setq-default current-menubar current-menubar))

;; add Singular button to toolbar for XEmacs
(if (fboundp 'toolbar-add-item)
    (toolbar-add-item 
     (vector 
      (toolbar-make-button-list (concat singular-emacs-home-directory 
                                        "singular.xpm"))
      'singular t "Start Singular")
     (length (specifier-instance default-toolbar))))

;;;
;;; - load singular.el.
;;;

;; get rid of superfluous "Load .emacs" menu entry on XEmacs
(when (fboundp 'delete-menu-item)
  (delete-menu-item '("Load .emacs"))           ; that is for the current buffer
  (let ((current-menubar (default-value 'current-menubar)))
    (delete-menu-item '("Load .emacs"))         ; that is for all other buffers
    (set-default 'current-menubar current-menubar)))

;; load singular.el from `singular-emacs-home-directory'
(load-file (concat singular-emacs-home-directory "singular.el"))