view lisp/term/wyse50.el @ 4885:6772ce4d982b

Fix hash tables, #'member*, #'assoc*, #'eql compiler macros if bignums lisp/ChangeLog addition: 2010-01-24 Aidan Kehoe <kehoea@parhasard.net> Correct the semantics of #'member*, #'eql, #'assoc* in the presence of bignums; change the integerp byte code to fixnump semantics. * bytecomp.el (fixnump, integerp, byte-compile-integerp): Change the integerp byte code to fixnump; add a byte-compile method to integerp using fixnump and numberp and avoiding a funcall most of the time, since in the non-core contexts where integerp is used, it's mostly distinguishing between fixnums and things that are not numbers at all. * byte-optimize.el (side-effect-free-fns, byte-after-unbind-ops) (byte-compile-side-effect-and-error-free-ops): Replace the integerp bytecode with fixnump; add fixnump to the side-effect-free-fns. Add the other extended number type predicates to the list in passing. * obsolete.el (floatp-safe): Mark this as obsolete. * cl.el (eql): Go into more detail in the docstring here. Don't bother checking whether both arguments are numbers; one is enough, #'equal will fail correctly if they have distinct types. (subst): Replace a call to #'integerp (deciding whether to use #'memq or not) with one to #'fixnump. Delete most-positive-fixnum, most-negative-fixnum from this file; they're now always in C, so they can't be modified from Lisp. * cl-seq.el (member*, assoc*, rassoc*): Correct these functions in the presence of bignums. * cl-macs.el (cl-make-type-test): The type test for a fixnum is now fixnump. Ditch floatp-safe, use floatp instead. (eql): Correct this compiler macro in the presence of bignums. (assoc*): Correct this compiler macro in the presence of bignums. * simple.el (undo): Change #'integerp to #'fixnump here, since we use #'delq with the same value as ELT a few lines down. src/ChangeLog addition: 2010-01-24 Aidan Kehoe <kehoea@parhasard.net> Fix problems with #'eql, extended number types, and the hash table implementation; change the Bintegerp bytecode to fixnump semantics even on bignum builds, since #'integerp can have a fast implementation in terms of #'fixnump for most of its extant uses, but not vice-versa. * lisp.h: Always #include number.h; we want the macros provided in it, even if the various number types are not available. * number.h (NON_FIXNUM_NUMBER_P): New macro, giving 1 when its argument is of non-immediate number type. Equivalent to FLOATP if WITH_NUMBER_TYPES is not defined. * elhash.c (lisp_object_eql_equal, lisp_object_eql_hash): Use NON_FIXNUM_NUMBER_P in these functions, instead of FLOATP, giving more correct behaviour in the presence of the extended number types. * bytecode.c (Bfixnump, execute_optimized_program): Rename Bintegerp to Bfixnump; change its semantics to reflect the new name on builds with bignum support. * data.c (Ffixnump, Fintegerp, syms_of_data, vars_of_data): Always make #'fixnump available, even on non-BIGNUM builds; always implement #'integerp in this file, even on BIGNUM builds. Move most-positive-fixnum, most-negative-fixnum here from number.c, so they are Lisp constants even on builds without number types, and attempts to change or bind them error. Use the NUMBERP and INTEGERP macros even on builds without extended number types. * data.c (fixnum_char_or_marker_to_int): Rename this function from integer_char_or_marker_to_int, to better reflect the arguments it accepts. * number.c (Fevenp, Foddp, syms_of_number): Never provide #'integerp in this file. Remove #'oddp, #'evenp; their implementations are overridden by those in cl.el. * number.c (vars_of_number): most-positive-fixnum, most-negative-fixnum are no longer here. man/ChangeLog addition: 2010-01-23 Aidan Kehoe <kehoea@parhasard.net> Generally: be careful to say fixnum, not integer, when talking about fixed-precision integral types. I'm sure I've missed instances, both here and in the docstrings, but this is a decent start. * lispref/text.texi (Columns): Document where only fixnums, not integers generally, are accepted. (Registers): Remove some ancient char-int confoundance here. * lispref/strings.texi (Creating Strings, Creating Strings): Be more exact in describing where fixnums but not integers in general are accepted. (Creating Strings): Use a more contemporary example to illustrate how concat deals with lists including integers about #xFF. Delete some obsolete documentation on same. (Char Table Types): Document that only fixnums are accepted as values in syntax tables. * lispref/searching.texi (String Search, Search and Replace): Be exact in describing where fixnums but not integers in general are accepted. * lispref/range-tables.texi (Range Tables): Be exact in describing them; only fixnums are accepted to describe ranges. * lispref/os.texi (Killing XEmacs, User Identification) (Time of Day, Time Conversion): Be more exact about using fixnum where only fixed-precision integers are accepted. * lispref/objects.texi (Integer Type): Be more exact (and up-to-date) about the possible values for integers. Cross-reference to documentation of the bignum extension. (Equality Predicates): (Range Table Type): (Array Type): Use fixnum, not integer, to describe a fixed-precision integer. (Syntax Table Type): Correct some English syntax here. * lispref/numbers.texi (Numbers): Change the phrasing here to use fixnum to mean the fixed-precision integers normal in emacs. Document that our terminology deviates from that of Common Lisp, and that we're working on it. (Compatibility Issues): Reiterate the Common Lisp versus Emacs Lisp compatibility issues. (Comparison of Numbers, Arithmetic Operations): * lispref/commands.texi (Command Loop Info, Working With Events): * lispref/buffers.texi (Modification Time): Be more exact in describing where fixnums but not integers in general are accepted.
author Aidan Kehoe <kehoea@parhasard.net>
date Sun, 24 Jan 2010 15:21:27 +0000
parents e29fcfd8df5f
children 308d34e9f07d
line wrap: on
line source

;;; wyse50.el --- terminal support code for Wyse 50

;; Copyright (C) 1989, 1993, 1994 Free Software Foundation, Inc.

;; Author: Daniel Pfieffer <pfieffer@cix.cict.fr> January 1991
;;	Jim Blandy <jimb@occs.cs.oberlin.edu>
;; Keywords: terminals

;;; This file is part of GNU Emacs.
;;;
;;; GNU Emacs is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 2, or (at your option)
;;; any later version.
;;;
;;; GNU Emacs is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Emacs; see the file COPYING.  If not, write to
;;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.

;;; Commentary:

;; Uses the Emacs 19 terminal initialization features --- won't work with 18.
;; Rewritten for Emacs 19 by jimb,  January 1992
;; Cleaned up for new terminal package conventions by esr, March 1993
;; Should work well for Televideo TVI 925 although it's overkill.
;;
;; The Wyse50 is ergonomically wonderful, but its escape-sequence design sucks
;; rocks.  The left-arrow key emits a backspace (!) and the down-arrow a line
;; feed (!!).  Thus, you have to unbind some commonly-used Emacs keys to
;; enable the arrows.

;;; Code:

(define-key function-key-map "\C-a" (make-keymap))
(mapc   (function (lambda (key-definition)
		    (define-key function-key-map
		      (car key-definition) (nth 1 key-definition))))
	'(
	  ;; These might be set up by termcap and terminfo
	  ("\C-k"	[up])
	  ("\C-j"	[down])
	  ("\C-l"	[right])
	  ("\C-h"	[left])
	  ("\^a@\^m"	[f1])
	  ("\^aA\^m"	[f2])
	  ("\^aB\^m"	[f3])
	  ("\^aC\^m"	[f4])
	  ("\^aD\^m"	[f5])
	  ("\^aE\^m"	[f6])
	  ("\^aF\^m"	[f7])
	  ("\^aG\^m"	[f8])
	  ("\^aH\^m"	[f9])

	  ;; These might be set up by terminfo
	  ("\eK"	[next])
	  ("\eT"	[clearline])
	  ("\^^"	[home])
	  ("\e\^^"	[end])
	  ("\eQ"	[insert])
	  ("\eE"	[insertline])
	  ("\eR"	[deleteline])
	  ("\eP"	[print])
	  ("\er"	[replace])
	  ("\^aI\^m"	[f10])
	  ("\^aJ\^m"	[f11])
	  ("\^aK\^m"	[f12])
	  ("\^aL\^m"	[f13])
	  ("\^aM\^m"	[f14])
	  ("\^aN\^m"	[f15])
	  ("\^aO\^m"	[f16])
	  ("\^a`\^m"	[f17])
	  ("\^aa\^m"	[f18])
	  ("\^ab\^m"	[f19])
	  ("\^ac\^m"	[f20])
	  ("\^ad\^m"	[f21])
	  ("\^ae\^m"	[f22])
	  ("\^af\^m"	[f23])
	  ("\^ag\^m"	[f24])
	  ("\^ah\^m"	[f25])
	  ("\^ai\^m"	[f26])
	  ("\^aj\^m"	[f27])
	  ("\^ak\^m"	[f28])
	  ("\^al\^m"	[f29])
	  ("\^am\^m"	[f30])
	  ("\^an\^m"	[f31])
	  ("\^ao\^m"	[f32])

	  ;; Terminfo may know about these, but X won't
	  ("\eI"	[key-stab])		;; Not an X keysym
	  ("\eJ"	[key-snext])		;; Not an X keysym
	  ("\eY"	[key-clear])		;; Not an X keysym

	  ;; These are totally strange :-)
	  ("\eW"	[?\C-?])	;; Not an X keysym
	  ("\^a\^k\^m"	[funct-up])	;; Not an X keysym
	  ("\^a\^j\^m"	[funct-down])	;; Not an X keysym
	  ("\^a\^l\^m"	[funct-right])	;; Not an X keysym
	  ("\^a\^h\^m"	[funct-left])	;; Not an X keysym
	  ("\^a\^m\^m"	[funct-return])	;; Not an X keysym
	  ("\^a\^i\^m"	[funct-tab])	;; Not an X keysym
))

(defun enable-arrow-keys ()
  "To be called by term-setup-hook. Overrides 6 Emacs standard keys
whose functions are then typed as follows:
C-a	Funct Left-arrow
C-h	M-?
LFD	Funct Return, some modes override down-arrow via LFD
C-k	CLR Line
C-l	Scrn CLR
M-r	M-x move-to-window-line, Funct up-arrow or down-arrow are similar
"
  (interactive)
  (mapc   (function (lambda (key-definition)
		      (global-set-key (car key-definition)
				      (nth 1 key-definition))))
	  ;; By unsetting C-a and then binding it to a prefix, we
	  ;; allow the rest of the function keys which start with C-a
	  ;; to be recognized.
	  '(("\C-a"	nil)
	    ("\C-k"	nil)
	    ("\C-j"	nil)
	    ("\C-l"	nil)
	    ("\C-h"	nil)
	    ("\er"	nil)))
  (fset 'enable-arrow-keys nil))


;;; Miscellaneous hacks

;;; This is an ugly hack for a nasty problem:
;;; Wyse 50 takes one character cell to store video attributes (which seems to
;;; explain width 79 rather than 80, column 1 is not used!!!).
;;; On killing (C-x C-c) the end inverse code (on column 1 of line 24)
;;; of the mode line is overwritten AFTER all the y-or-n questions.
;;; This causes the attribute to remain in effect until the mode line has
;;; scrolled of the screen.  Suspending (C-z) does not cause this problem.
;;; On such terminals, Emacs should sacrifice the first and last character of
;;; each mode line, rather than a whole screen column!
(add-hook 'kill-emacs-hook
	  (function (lambda () (interactive)
		      (send-string-to-terminal
		       (concat "\ea23R" (1+ (frame-width)) "C\eG0")))))

;;; wyse50.el ends here