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63 lines
2.3 KiB
EmacsLisp
63 lines
2.3 KiB
EmacsLisp
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;;;; Define VT100 function key escape sequences in function-key-map.
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;;; CSI sequences - those that start with "\e[".
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(define-prefix-command 'vt100-CSI-prefix 'vt100-CSI-map)
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(define-key function-key-map "\e[" 'vt100-CSI-prefix)
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(define-key vt100-CSI-map "A" [up])
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(define-key vt100-CSI-map "B" [down])
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(define-key vt100-CSI-map "C" [right])
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(define-key vt100-CSI-map "D" [left])
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(defun enable-arrow-keys ()
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"Enable the use of the VT100 arrow keys for cursor motion.
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Because of the nature of the VT100, this unavoidably breaks
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the standard Emacs command ESC [; therefore, it is not done by default,
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but only if you give this command."
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(interactive)
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(global-unset-key "\e["))
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;;; SS3 sequences - those that start with "\eO".
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(define-prefix-command 'vt100-SS3-prefix 'vt100-SS3-map)
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(define-key function-key-map "\eO" 'vt100-SS3-prefix)
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(define-key vt100-SS3-map "A" [up])
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(define-key vt100-SS3-map "B" [down]) ; down-arrow
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(define-key vt100-SS3-map "C" [right]) ; right-arrow
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(define-key vt100-SS3-map "D" [left]) ; left-arrow
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(define-key vt100-SS3-map "M" [kp-enter]) ; Enter
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(define-key vt100-SS3-map "P" [kp-f1]) ; PF1
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(define-key vt100-SS3-map "Q" [kp-f2]) ; PF2
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(define-key vt100-SS3-map "R" [kp-f3]) ; PF3
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(define-key vt100-SS3-map "S" [kp-f4]) ; PF4
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(define-key vt100-SS3-map "l" [kp-separator]) ; ,
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(define-key vt100-SS3-map "m" [kp-subtract]) ; -
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(define-key vt100-SS3-map "n" [kp-period]) ; .
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(define-key vt100-SS3-map "p" [kp-0]) ; 0
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(define-key vt100-SS3-map "q" [kp-1]) ; 1
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(define-key vt100-SS3-map "r" [kp-2]) ; 2
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(define-key vt100-SS3-map "s" [kp-3]) ; 3
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(define-key vt100-SS3-map "t" [kp-4]) ; 4
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(define-key vt100-SS3-map "u" [kp-5]) ; 5
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(define-key vt100-SS3-map "v" [kp-6]) ; 6
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(define-key vt100-SS3-map "w" [kp-7]) ; 7
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(define-key vt100-SS3-map "x" [kp-8]) ; 8
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(define-key vt100-SS3-map "y" [kp-9]) ; 9
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;;; Controlling the screen width.
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(defconst vt100-wide-mode (= (screen-width) 132)
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"t if vt100 is in 132-column mode.")
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(defun vt100-wide-mode (&optional arg)
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"Toggle 132/80 column mode for vt100s."
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(interactive "P")
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(setq vt100-wide-mode
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(if (null arg) (not vt100-wide-mode)
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(> (prefix-numeric-value arg) 0)))
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(send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
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(set-screen-width (if vt100-wide-mode 132 80)))
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