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Education Sampler 1992 [NeXTSTEP]
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emacs-15.0.3
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supdup.el
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Lisp/Scheme
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1990-07-19
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3KB
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82 lines
;; Losing unix doesn't know about the -real- control bit
;; there should be some way to conditionalize this on the basis
;; of %TOFCI -- except that the existing supdup server loses this information!
;; It isn't clear-cut what to do in the server, as %tofci means that the user
;; can generate full 9-bit MIT characters, which isn't what the `km' termcap
;; flag means. On the other hand, being able to generate 8-bit characters
;; (which is sort of what `km' is) isn't the same as %tofci.
;; I think the problem is fundamental and cultural and irresolvable.
;; unix supdup server uses 0237 as a control escape.
;; c-a 001
;; m-a 341
;; c-m-a 201
;; c-1 237 061
;; m-1 261
;; c-m-1 237 261
;; c-m-_ 237 237
(defvar supdup-control-map (make-keymap))
(fillarray supdup-control-map 'ascii-loses)
(defvar supdup-control-meta-map (make-keymap))
(fillarray supdup-control-meta-map 'ascii-loses)
(define-key supdup-control-meta-map "\C-_" nil) ; this is c-m-_
(define-key supdup-control-map "\e" supdup-control-meta-map)
(define-key global-map "\e\C-_" supdup-control-map)
(let ((n ?0))
(while (<= n ?9)
(define-key supdup-control-map (char-to-string n) 'supdup-digit-argument)
(define-key supdup-control-meta-map (char-to-string n) 'supdup-digit-argument)
(setq n (1+ n)))
(define-key supdup-control-map "-" 'supdup-digit-argument)
(define-key supdup-control-meta-map "-" 'supdup-digit-argument))
(defun ascii-loses ()
(interactive)
(if (= (aref (this-command-keys) 0) meta-prefix-char)
;; loser typed <esc> c-_ <char>
(error "Undefined command: %s"
(mapconcat 'text-char-description (this-command-keys) " "))
;; Get here from m-c-_ <char> for c-<char> or m-c-_ m-<char>
(error "Ascii loses: c-%s%c"
(if (> last-input-char ?\200) "m-" "")
(logand last-input-char ?\177))))
(defun supdup-digit-argument (p)
(interactive "P")
(let ((n last-input-char))
(if (and (<= (+ ?\200 ?0) n) (<= n (+ ?\200 ?9)))
(setq n (- n ?\200)))
(cond ((or (= n ?-) (= n ?\M--))
(message "Arg: %s" (setq prefix-arg '-)))
((or (< n ?0) (> n ?9))
(error "Lossage: %s" (this-command-keys)))
(t
(setq n (- n ?0))
(message "Arg: %d"
(setq prefix-arg
(cond ((listp p)
n)
((eq p '-)
(- n))
((>= p 0)
(+ (* p 10) n))
(t
(- (* p 10) n)))))))))
;; Attempt to detect slimebollix machine serving as terminal.
(if (let ((termcap (getenv "TERMCAP")))
(and termcap
(string-match ":co#131:li#52:\\|:co#135:li#50:" termcap)))
(message "In doing business with Symbolics, you are rewarding a wrong."))
;; Mouse support works with Lambdas.
;(autoload 'sup-mouse-report "sup-mouse"
; "This command is sent by a special version of Supdup on the LMI Lambda
;when the mouse is clicked." t)
;(global-set-key "\C-x\C-@" 'sup-mouse-report)