annotate lisp/cl.el @ 5620:7a81b4d98d2d

Shrink the widget-field-face. -------------------- ChangeLog entries follow: -------------------- lisp/ChangeLog addition: 2011-12-27 Didier Verna <didier@xemacs.org> * wid-edit.el (widget-field-face): Set this face to shrink. Fix incorrect specification.
author Didier Verna <didier@xemacs.org>
date Tue, 27 Dec 2011 15:21:28 +0100
parents 5f4f92a31875
children bd80d9103fc8
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023b83f4e54b [xemacs-hg @ 2001-06-10 10:42:16 by ben]
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1 ;;; cl.el --- Common Lisp extensions for XEmacs Lisp
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2
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3 ;; Copyright (C) 1993, 1997 Free Software Foundation, Inc.
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4 ;; Copyright (C) 2010 Ben Wing.
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5
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6 ;; Author: Dave Gillespie <daveg@synaptics.com>
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7 ;; Maintainer: XEmacs Development Team
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8 ;; Version: 2.02
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9 ;; Keywords: extensions, dumped, lisp
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10
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11 ;; This file is part of XEmacs.
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12
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13 ;; XEmacs is free software: you can redistribute it and/or modify it
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14 ;; under the terms of the GNU General Public License as published by the
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15 ;; Free Software Foundation, either version 3 of the License, or (at your
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16 ;; option) any later version.
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17
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18 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT
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19 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 ;; for more details.
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22
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23 ;; You should have received a copy of the GNU General Public License
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24 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>.
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25
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393039450288 [xemacs-hg @ 2004-06-26 21:25:23 by james]
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26 ;;; Synched up with: FSF 21.3.
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27
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28 ;;; Commentary:
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29
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30 ;; This file is dumped with XEmacs.
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31
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32 ;; These are extensions to Emacs Lisp that provide a degree of
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33 ;; Common Lisp compatibility, beyond what is already built-in
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34 ;; in Emacs Lisp.
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35 ;;
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36 ;; This package was written by Dave Gillespie; it is a complete
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37 ;; rewrite of Cesar Quiroz's original cl.el package of December 1986.
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38 ;;
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39 ;; Bug reports, comments, and suggestions are welcome!
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40
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41 ;; This file contains the portions of the Common Lisp extensions
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42 ;; package which should always be present.
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43
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44
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45 ;;; Future notes:
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46
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47 ;; Once Emacs 19 becomes standard, many things in this package which are
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48 ;; messy for reasons of compatibility can be greatly simplified. For now,
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49 ;; I prefer to maintain one unified version.
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50
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51
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52 ;;; Change Log:
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53
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54 ;; Version 2.02 (30 Jul 93):
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55 ;; * Added "cl-compat.el" file, extra compatibility with old package.
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56 ;; * Added `lexical-let' and `lexical-let*'.
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57 ;; * Added `define-modify-macro', `callf', and `callf2'.
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58 ;; * Added `ignore-errors'.
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59 ;; * Changed `(setf (nthcdr N PLACE) X)' to work when N is zero.
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60 ;; * Merged `*gentemp-counter*' into `*gensym-counter*'.
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61 ;; * Extended `subseq' to allow negative START and END like `substring'.
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62 ;; * Added `in-ref', `across-ref', `elements of-ref' loop clauses.
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63 ;; * Added `concat', `vconcat' loop clauses.
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64 ;; * Cleaned up a number of compiler warnings.
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65
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66 ;; Version 2.01 (7 Jul 93):
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67 ;; * Added support for FSF version of Emacs 19.
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68 ;; * Added `add-hook' for Emacs 18 users.
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69 ;; * Added `defsubst*' and `symbol-macrolet'.
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70 ;; * Added `maplist', `mapc', `mapl', `mapcan', `mapcon'.
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71 ;; * Added `map', `concatenate', `reduce', `merge'.
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72 ;; * Added `revappend', `nreconc', `tailp', `tree-equal'.
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73 ;; * Added `assert', `check-type', `typecase', `typep', and `deftype'.
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74 ;; * Added destructuring and `&environment' support to `defmacro*'.
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75 ;; * Added destructuring to `loop', and added the following clauses:
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76 ;; `elements', `frames', `overlays', `intervals', `buffers', `key-seqs'.
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77 ;; * Renamed `delete' to `delete*' and `remove' to `remove*'.
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78 ;; * Completed support for all keywords in `remove*', `substitute', etc.
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79 ;; * Added `most-positive-float' and company.
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80 ;; * Fixed hash tables to work with latest Lucid Emacs.
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81 ;; * `proclaim' forms are no longer compile-time-evaluating; use `declaim'.
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82 ;; * Syntax for `warn' declarations has changed.
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83 ;; * Improved implementation of `random*'.
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84 ;; * Moved most sequence functions to a new file, cl-seq.el.
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85 ;; * Moved `eval-when' into cl-macs.el.
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86 ;; * Moved `pushnew' and `adjoin' to cl.el for most common cases.
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87 ;; * Moved `provide' forms down to ends of files.
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88 ;; * Changed expansion of `pop' to something that compiles to better code.
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89 ;; * Changed so that no patch is required for Emacs 19 byte compiler.
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90 ;; * Made more things dependent on `optimize' declarations.
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91 ;; * Added a partial implementation of struct print functions.
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92 ;; * Miscellaneous minor changes.
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93
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94 ;; Version 2.00:
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95 ;; * First public release of this package.
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96
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97
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98 ;;; Code:
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99
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100 (defvar cl-optimize-speed 1)
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101 (defvar cl-optimize-safety 1)
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102
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103 (defvar custom-print-functions nil
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104 "This is a list of functions that format user objects for printing.
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105 Each function is called in turn with three arguments: the object, the
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106 stream, and the print level (currently ignored). If it is able to
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107 print the object it returns true; otherwise it returns nil and the
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108 printer proceeds to the next function on the list.
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109
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110 This variable is not used at present, but it is defined in hopes that
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111 a future Emacs interpreter will be able to use it.")
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112
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113 ;;; Predicates.
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114
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115 (defun eql (a b) ; See compiler macro in cl-macs.el
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116 "Return t if the arguments are the same Lisp object, or numerically equal.
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117
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118 They must be of the same type; the difference between `eq' and `eql' is most
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119 relevant when it comes to the non-fixnum number types. In this
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120 implementation, fixnums of the same numeric value are always `eq', but this
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121 is not true for other numeric types, among them floats, bignums and ratios,
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122 if available.
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123
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124 See also `=' (which doesn't require that its arguments be of the same type,
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125 but only accepts numeric arguments, characters and markers) and `equal'."
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126 (or (eq a b) (and (numberp a) (equal a b))))
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127
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128 ;;; Generalized variables. These macros are defined here so that they
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129 ;;; can safely be used in .emacs files.
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130
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131 (defmacro incf (place &optional x)
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132 "Increment PLACE by X (1 by default).
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133 PLACE may be a symbol, or any generalized variable allowed by `setf'.
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134 The return value is the incremented value of PLACE."
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135 (if (symbolp place)
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136 (list 'setq place (if x (list '+ place x) (list '1+ place)))
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137 ;; XEmacs byte-compiler optimizes (+ FOO 1) to (1+ FOO), so this
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138 ;; is OK.
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139 (list 'callf '+ place (or x 1))))
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140
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141 (defmacro decf (place &optional x)
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142 "Decrement PLACE by X (1 by default).
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143 PLACE may be a symbol, or any generalized variable allowed by `setf'.
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144 The return value is the decremented value of PLACE."
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145 (if (symbolp place)
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146 (list 'setq place (if x (list '- place x) (list '1- place)))
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147 (list 'callf '- place (or x 1))))
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148
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149 (defmacro pop (place)
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150 "Remove and return the head of the list stored in PLACE.
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151 Analogous to (prog1 (car PLACE) (setf PLACE (cdr PLACE))), though more
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152 careful about evaluating each argument only once and in the right order.
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153 PLACE may be a symbol, or any generalized variable allowed by `setf'."
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154 (if (symbolp place)
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155 `(car (prog1 ,place (setq ,place (cdr ,place))))
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156 (cl-do-pop place)))
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157
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158 (defmacro push (newelt listname)
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159 "Add NEWELT at the beginning of the list stored in LISTNAME.
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160 Analogous to (setf LISTNAME (cons NEWELT LISTNAME)), though more careful
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161 about evaluating each argument only once and in the right order. LISTNAME
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162 may be a symbol, or any generalized variable allowed by `setf'; that is, it
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163 does not necessarily have to be a list, though `push' is most often used on
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164 lists. "
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165 (if (symbolp listname) `(setq ,listname (cons ,newelt ,listname))
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166 (list 'callf2 'cons newelt listname)))
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167
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168 (defmacro pushnew (newelt listname &rest keys)
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169 "Add NEWELT at the beginning of LISTNAME, unless it's already in LISTNAME.
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170 Like (push NEWELT LISTNAME), except that the list is unmodified if NEWELT is
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171 `eql' to an element already on the list.
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172 Keywords supported: :test :test-not :key
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173 See `member*' for the meaning of :test, :test-not and :key."
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174 (if (symbolp listname) (list 'setq listname
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175 (list* 'adjoin newelt listname keys))
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176 (list* 'callf2 'adjoin newelt listname keys)))
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177
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178 (defun cl-set-elt (seq n val)
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179 (if (listp seq) (setcar (nthcdr n seq) val) (aset seq n val)))
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180
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181 (defun cl-set-nthcdr (n list x)
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182 (if (<= n 0) x (setcdr (nthcdr (1- n) list) x) list))
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183
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184 (defun cl-set-buffer-substring (start end val)
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185 (save-excursion (delete-region start end)
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186 (goto-char start)
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187 (insert val)
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188 val))
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189
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190 (defun cl-set-substring (str start end val)
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191 (if end (if (< end 0) (incf end (length str)))
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192 (setq end (length str)))
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193 (if (< start 0) (incf start (length str)))
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194 (concat (and (> start 0) (substring str 0 start))
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195 val
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196 (and (< end (length str)) (substring str end))))
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197
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198 ;;; Control structures.
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199
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200 ;; The macros `when' and `unless' are so useful that we want them to
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201 ;; ALWAYS be available. So they've been moved from cl.el to eval.c.
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202 ;; Note: FSF Emacs moved them to subr.el in FSF 20.
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203
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204 (defalias 'cl-map-extents 'map-extents)
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205
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206 ;;; XEmacs; multiple values are in eval.c and cl-macs.el.
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207
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208 ;;; We no longer support `multiple-value-apply', which was ill-conceived to
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209 ;;; start with, is not specified by Common Lisp, and which nothing uses,
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210 ;;; according to Google Code Search, as of Sat Mar 14 23:31:35 GMT 2009.
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211
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212 (make-obsolete 'multiple-value-apply 'multiple-value-call)
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213
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214 ;;; Macros.
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215
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216 ;; XEmacs: incorporate the functionality of #'cl-macroexpand into
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217 ;; #'macroexpand, in eval.c.
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218 (defalias 'cl-macroexpand 'macroexpand)
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219 (defalias 'macroexpand-internal 'macroexpand)
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220
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221 (defvar cl-compiling-file nil)
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222 (defun cl-compiling-file ()
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223 (or cl-compiling-file
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224 ;; XEmacs change
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225 ; (and (boundp 'outbuffer) (bufferp (symbol-value 'outbuffer))
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226 ; (equal (buffer-name (symbol-value 'outbuffer))
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227 ; " *Compiler Output*"))
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228 (and (boundp 'byte-compile-outbuffer)
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229 (bufferp (symbol-value 'byte-compile-outbuffer))
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230 (equal (buffer-name (symbol-value 'byte-compile-outbuffer))
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231 " *Compiler Output*"))
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232 ))
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233
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234 (defvar cl-proclaims-deferred nil)
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235
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236 (defun proclaim (spec)
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237 (if (fboundp 'cl-do-proclaim) (cl-do-proclaim spec t)
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238 (push spec cl-proclaims-deferred))
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239 nil)
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240
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241 (defmacro declaim (&rest specs)
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242 (let ((body (mapcar (function (lambda (x) (list 'proclaim (list 'quote x))))
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243 specs)))
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244 (if (cl-compiling-file) (list* 'eval-when '(compile load eval) body)
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245 (cons 'progn body)))) ; avoid loading cl-macs.el for eval-when
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246
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247 ;;; Symbols.
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248
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249 (defun cl-random-time ()
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250 (let* ((time (copy-sequence (current-time-string))) (i (length time)) (v 0))
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251 (while (>= (decf i) 0) (setq v (+ (* v 3) (aref time i))))
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252 (if-fboundp 'coerce-number
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253 (coerce-number v 'fixnum)
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254 v)))
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255
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256 (defvar *gensym-counter* (* (logand (cl-random-time) 1023) 100))
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257
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258 ;; XEmacs change: gensym and gentemp moved here from cl-macs.el
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259 (defun gensym (&optional arg)
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260 "Generate a new uninterned symbol.
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261 The name is made by appending a number to a prefix. If ARG is a string, it
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262 is the prefix, otherwise the prefix defaults to \"G\". If ARG is an integer,
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263 the internal counter is reset to that number before creating the name.
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264 There is no way to specify both using this function."
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265 (let ((prefix (if (stringp arg) arg "G"))
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266 (num (if (integerp arg) arg
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267 (prog1 *gensym-counter*
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268 (setq *gensym-counter* (1+ *gensym-counter*))))))
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269 (make-symbol (format "%s%d" prefix num))))
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270
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271 (defun gentemp (&optional arg)
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272 "Generate a new interned symbol with a unique name.
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273 The name is made by appending a number to ARG, default \"G\".
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274 If ARG is not a string, it is ignored."
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275 (let ((prefix (if (stringp arg) arg "G"))
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276 name)
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277 (while (intern-soft (setq name (format "%s%d" prefix *gensym-counter*)))
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278 (setq *gensym-counter* (1+ *gensym-counter*)))
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279 (intern name)))
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280
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281 ;;; Numbers.
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282
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283 ;; XEmacs change: ditch floatp-safe.
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284
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285 (defun plusp (number)
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286 "Return t if NUMBER is positive."
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287 (> number 0))
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288
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289 (defun minusp (number)
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290 "Return t if NUMBER is negative."
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291 (< number 0))
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292
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293 (defun oddp (integer)
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294 "Return t if INTEGER is odd."
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295 (eql (logand integer 1) 1))
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296
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297 (defun evenp (integer)
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298 "Return t if INTEGER is even."
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299 (eql (logand integer 1) 0))
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300
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301 ;; XEmacs addition
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302 (defalias 'cl-abs 'abs)
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303
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304 (defvar *random-state* (vector 'cl-random-state-tag -1 30 (cl-random-time)))
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305
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306 ;;; The following are set by code in cl-extra.el
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307 (defconst most-positive-float nil
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308 "The float closest in value to positive infinity.")
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309 (defconst most-negative-float nil
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310 "The float closest in value to negative infinity.")
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311 (defconst least-positive-float nil
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312 "The positive float closest in value to zero.")
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313 (defconst least-negative-float nil
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314 "The negative float closest in value to zero.")
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315 (defconst least-positive-normalized-float nil
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316 "The normalized positive float closest in value to zero.
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317
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318 A float is normalized if the most significant bit of its mantissa is 1.
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319 Use of denormalized (equivalently, subnormal) floats in calculations will
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320 lead to gradual underflow, though they can be more accurate in representing
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321 individual small values. Normal and subnormal floats are as described in
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322 IEEE 754.")
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323
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324 (defconst least-negative-normalized-float nil
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325 "The normalized negative float closest in value to zero.
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326
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327 See `least-positive-normalized-float' for details of normal and denormalized
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328 numbers.")
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329
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330 (defconst float-epsilon nil
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331 "The smallest float guaranteed not `eql' to 1.0 when added to 1.0.
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332
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333 That is, (eql 1.0 (+ 1.0 X)) will always give nil if (<= float-epsilon X) ,
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334 but it may give t for smaller values.")
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335
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336 (defconst float-negative-epsilon nil
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337 "The smallest float guaranteed not `eql' to 1.0 when subtracted from 1.0.
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338
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339 That is, (eql 1.0 (- 1.0 X)) will always give nil if (<=
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340 float-negative-epsilon X) , but it may give t for smaller values.")
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341
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342 ;;; Sequence functions.
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343
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344 (defalias 'copy-seq 'copy-sequence)
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345
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346 ;; XEmacs; #'mapcar* is in C.
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347
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348 (defalias 'svref 'aref) ;; Compiler macro in cl-macs.el
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349
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350 ;;; List functions.
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351
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352 ;; These functions are made known to the byte-compiler by cl-macs.el
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353 ;; and turned into efficient car and cdr bytecodes.
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354
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355 (defalias 'first 'car)
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356 (defalias 'rest 'cdr)
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357
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358 ;; XEmacs change; this needs to error if handed a non-list.
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359 (defun endp (list)
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360 "Return t if LIST is nil, or nil if LIST is a cons. Error otherwise."
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361 (prog1
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362 (null list)
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363 (and list (atom list) (error 'wrong-type-argument #'listp list))))
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364
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365 ;; XEmacs change: make it a real function
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366 (defun second (x)
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367 "Return the second element of the list LIST."
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368 (car (cdr x)))
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369
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370 (defun third (x)
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371 "Return the third element of the list X."
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372 (car (cdr (cdr x))))
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373
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374 (defun fourth (x)
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375 "Return the fourth element of the list X."
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376 (nth 3 x))
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377
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378 (defun fifth (x)
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379 "Return the fifth element of the list X."
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380 (nth 4 x))
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381
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382 (defun sixth (x)
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383 "Return the sixth element of the list X."
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384 (nth 5 x))
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385
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386 (defun seventh (x)
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387 "Return the seventh element of the list X."
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388 (nth 6 x))
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389
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390 (defun eighth (x)
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391 "Return the eighth element of the list X."
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392 (nth 7 x))
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393
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394 (defun ninth (x)
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395 "Return the ninth element of the list X."
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396 (nth 8 x))
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397
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398 (defun tenth (x)
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399 "Return the tenth element of the list X."
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400 (nth 9 x))
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401
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402 ;; XEmacs change: Emacs defines caar, cadr, cdar, and cddr in subr.el.
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403 (defun caar (x)
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404 "Return the `car' of the `car' of X."
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405 (car (car x)))
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406
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407 (defun cadr (x)
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408 "Return the `car' of the `cdr' of X. Equivalent to `(second X)'."
428
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409 (car (cdr x)))
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410
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411 (defun cdar (x)
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412 "Return the `cdr' of the `car' of X."
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413 (cdr (car x)))
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414
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415 (defun cddr (x)
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416 "Return the `cdr' of the `cdr' of X."
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417 (cdr (cdr x)))
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418
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419 (defun caaar (x)
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420 "Return the `car' of the `car' of the `car' of X."
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421 (car (car (car x))))
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422
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423 (defun caadr (x)
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424 "Return the `car' of the `car' of the `cdr' of X."
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425 (car (car (cdr x))))
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426
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427 (defun cadar (x)
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428 "Return the `car' of the `cdr' of the `car' of X."
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429 (car (cdr (car x))))
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430
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431 (defun caddr (x)
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432 "Return the `car' of the `cdr' of the `cdr' of X.
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433 Equivalent to `(third X)'."
428
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434 (car (cdr (cdr x))))
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435
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436 (defun cdaar (x)
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437 "Return the `cdr' of the `car' of the `car' of X."
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438 (cdr (car (car x))))
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439
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440 (defun cdadr (x)
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441 "Return the `cdr' of the `car' of the `cdr' of X."
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442 (cdr (car (cdr x))))
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443
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444 (defun cddar (x)
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445 "Return the `cdr' of the `cdr' of the `car' of X."
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446 (cdr (cdr (car x))))
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447
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448 (defun cdddr (x)
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449 "Return the `cdr' of the `cdr' of the `cdr' of X."
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450 (cdr (cdr (cdr x))))
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451
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452 (defun caaaar (x)
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453 "Return the `car' of the `car' of the `car' of the `car' of X."
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454 (car (car (car (car x)))))
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455
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456 (defun caaadr (x)
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457 "Return the `car' of the `car' of the `car' of the `cdr' of X."
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458 (car (car (car (cdr x)))))
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459
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460 (defun caadar (x)
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461 "Return the `car' of the `car' of the `cdr' of the `car' of X."
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462 (car (car (cdr (car x)))))
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463
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464 (defun caaddr (x)
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diff changeset
465 "Return the `car' of the `car' of the `cdr' of the `cdr' of X."
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diff changeset
466 (car (car (cdr (cdr x)))))
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cvs
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diff changeset
467
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parents:
diff changeset
468 (defun cadaar (x)
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diff changeset
469 "Return the `car' of the `cdr' of the `car' of the `car' of X."
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parents:
diff changeset
470 (car (cdr (car (car x)))))
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471
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diff changeset
472 (defun cadadr (x)
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diff changeset
473 "Return the `car' of the `cdr' of the `car' of the `cdr' of X."
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parents:
diff changeset
474 (car (cdr (car (cdr x)))))
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diff changeset
475
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parents:
diff changeset
476 (defun caddar (x)
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diff changeset
477 "Return the `car' of the `cdr' of the `cdr' of the `car' of X."
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cvs
parents:
diff changeset
478 (car (cdr (cdr (car x)))))
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479
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parents:
diff changeset
480 (defun cadddr (x)
5392
25c10648ffba #'cadr, #'caddr, #'cadddr; document some equivalences.
Aidan Kehoe <kehoea@parhasard.net>
parents: 5385
diff changeset
481 "Return the `car' of the `cdr' of the `cdr' of the `cdr' of X.
25c10648ffba #'cadr, #'caddr, #'cadddr; document some equivalences.
Aidan Kehoe <kehoea@parhasard.net>
parents: 5385
diff changeset
482 Equivalent to `(fourth X)'."
428
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diff changeset
483 (car (cdr (cdr (cdr x)))))
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diff changeset
484
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diff changeset
485 (defun cdaaar (x)
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diff changeset
486 "Return the `cdr' of the `car' of the `car' of the `car' of X."
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cvs
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diff changeset
487 (cdr (car (car (car x)))))
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488
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diff changeset
489 (defun cdaadr (x)
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diff changeset
490 "Return the `cdr' of the `car' of the `car' of the `cdr' of X."
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diff changeset
491 (cdr (car (car (cdr x)))))
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diff changeset
492
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diff changeset
493 (defun cdadar (x)
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diff changeset
494 "Return the `cdr' of the `car' of the `cdr' of the `car' of X."
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cvs
parents:
diff changeset
495 (cdr (car (cdr (car x)))))
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diff changeset
496
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diff changeset
497 (defun cdaddr (x)
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diff changeset
498 "Return the `cdr' of the `car' of the `cdr' of the `cdr' of X."
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cvs
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diff changeset
499 (cdr (car (cdr (cdr x)))))
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cvs
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diff changeset
500
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parents:
diff changeset
501 (defun cddaar (x)
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diff changeset
502 "Return the `cdr' of the `cdr' of the `car' of the `car' of X."
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cvs
parents:
diff changeset
503 (cdr (cdr (car (car x)))))
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cvs
parents:
diff changeset
504
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parents:
diff changeset
505 (defun cddadr (x)
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parents:
diff changeset
506 "Return the `cdr' of the `cdr' of the `car' of the `cdr' of X."
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cvs
parents:
diff changeset
507 (cdr (cdr (car (cdr x)))))
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cvs
parents:
diff changeset
508
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cvs
parents:
diff changeset
509 (defun cdddar (x)
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parents:
diff changeset
510 "Return the `cdr' of the `cdr' of the `cdr' of the `car' of X."
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cvs
parents:
diff changeset
511 (cdr (cdr (cdr (car x)))))
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cvs
parents:
diff changeset
512
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parents:
diff changeset
513 (defun cddddr (x)
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parents:
diff changeset
514 "Return the `cdr' of the `cdr' of the `cdr' of the `cdr' of X."
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cvs
parents:
diff changeset
515 (cdr (cdr (cdr (cdr x)))))
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cvs
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diff changeset
516
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cvs
parents:
diff changeset
517 ;;; `last' is implemented as a C primitive, as of 1998-11
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cvs
parents:
diff changeset
518
5281
aa20a889ff14 Remove a couple of redundant functions, backquote.el
Aidan Kehoe <kehoea@parhasard.net>
parents: 5219
diff changeset
519 ;;; XEmacs: `list*' is in subr.el.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
520
5285
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
521 ;; XEmacs; handle dotted lists properly, error on circularity and if LIST is
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
522 ;; not a list.
428
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parents:
diff changeset
523 (defun ldiff (list sublist)
5285
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
524 "Return a copy of LIST with the tail SUBLIST removed.
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
525
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
526 If SUBLIST is the same Lisp object as LIST, return nil. If SUBLIST is
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
527 not present in the list structure of LIST (that is, it is not the cdr
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
528 of some cons making up LIST), this function is equivalent to
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
529 `copy-list'. LIST may be dotted."
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
530 (check-argument-type #'listp list)
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
531 (and list (not (eq list sublist))
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
532 (let ((before list) (evenp t) result)
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
533 (prog1
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
534 (setq result (list (car list)))
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
535 (while (and (setq list (cdr-safe list)) (not (eql list sublist)))
5294
bbff29a01820 Add compiler macros and compilation sanity-checks for functions with keywords.
Aidan Kehoe <kehoea@parhasard.net>
parents: 5285
diff changeset
536 (setcdr result (if (consp list) (list (car list)) list))
bbff29a01820 Add compiler macros and compilation sanity-checks for functions with keywords.
Aidan Kehoe <kehoea@parhasard.net>
parents: 5285
diff changeset
537 (setq result (cdr result)
5285
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
538 evenp (not evenp))
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
539 (if evenp (setq before (cdr before)))
99de5fd48e87 Tighten up Common Lisp compatibility, #'butlast, #'nbutlast, #'tailp, #'ldiff
Aidan Kehoe <kehoea@parhasard.net>
parents: 5281
diff changeset
540 (if (eq before list) (error 'circular-list list)))))))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
541
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cvs
parents:
diff changeset
542 ;;; `copy-list' is implemented as a C primitive, as of 1998-11
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cvs
parents:
diff changeset
543
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cvs
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diff changeset
544 (defalias 'cl-member 'memq) ; for compatibility with old CL package
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cvs
parents:
diff changeset
545 (defalias 'cl-floor 'floor*)
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cvs
parents:
diff changeset
546 (defalias 'cl-ceiling 'ceiling*)
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cvs
parents:
diff changeset
547 (defalias 'cl-truncate 'truncate*)
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cvs
parents:
diff changeset
548 (defalias 'cl-round 'round*)
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cvs
parents:
diff changeset
549 (defalias 'cl-mod 'mod*)
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cvs
parents:
diff changeset
550
5354
22c4e67a2e69 Remove #'acons from cl.el, make the version in alloc.c visible to Lisp
Aidan Kehoe <kehoea@parhasard.net>
parents: 5353
diff changeset
551 ;;; XEmacs; #'acons is in C.
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
552
5219
2d0937dc83cf Tidying of CL files; make docstrings read better, remove commented-out code
Aidan Kehoe <kehoea@parhasard.net>
parents: 5066
diff changeset
553 (defun pairlis (keys values &optional alist)
2d0937dc83cf Tidying of CL files; make docstrings read better, remove commented-out code
Aidan Kehoe <kehoea@parhasard.net>
parents: 5066
diff changeset
554 "Make an alist from KEYS and VALUES.
2d0937dc83cf Tidying of CL files; make docstrings read better, remove commented-out code
Aidan Kehoe <kehoea@parhasard.net>
parents: 5066
diff changeset
555 Return a new alist composed by associating KEYS to corresponding VALUES;
2d0937dc83cf Tidying of CL files; make docstrings read better, remove commented-out code
Aidan Kehoe <kehoea@parhasard.net>
parents: 5066
diff changeset
556 the process stops as soon as KEYS or VALUES run out.
2d0937dc83cf Tidying of CL files; make docstrings read better, remove commented-out code
Aidan Kehoe <kehoea@parhasard.net>
parents: 5066
diff changeset
557 If ALIST is non-nil, the new pairs are prepended to it."
2d0937dc83cf Tidying of CL files; make docstrings read better, remove commented-out code
Aidan Kehoe <kehoea@parhasard.net>
parents: 5066
diff changeset
558 (nconc (mapcar* 'cons keys values) alist))
428
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cvs
parents:
diff changeset
559
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cvs
parents:
diff changeset
560 ;;; Miscellaneous.
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cvs
parents:
diff changeset
561
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cvs
parents:
diff changeset
562 ;; XEmacs change
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cvs
parents:
diff changeset
563 (define-error 'cl-assertion-failed "Assertion failed")
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cvs
parents:
diff changeset
564
5318
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
565 ;; XEmacs; provide a milquetoast amount of compatibility in our error symbols.
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
566 (define-error 'type-error "Wrong type" 'wrong-type-argument)
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
567 (define-error 'program-error "Error in your program" 'invalid-argument)
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
568
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
569 (map-plist
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
570 #'(lambda (key value)
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
571 (mapc #'(lambda (error)
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
572 (put error 'error-conditions
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
573 (cons key (get error 'error-conditions))))
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
574 value))
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
575 '(program-error (wrong-number-of-arguments invalid-keyword-argument)
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
576 type-error (wrong-type-argument malformed-list circular-list)))
203dcac81dae Provide some milquetoast compatibility in our errors, type-error, program-error
Aidan Kehoe <kehoea@parhasard.net>
parents: 5294
diff changeset
577
2153
393039450288 [xemacs-hg @ 2004-06-26 21:25:23 by james]
james
parents: 2136
diff changeset
578 ;; XEmacs change: omit the autoload rules; we handle those a different way
428
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cvs
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diff changeset
579
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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diff changeset
580 ;;; Define data for indentation and edebug.
4995
8431b52e43b1 Move the various map* functions to C; add #'map-into.
Aidan Kehoe <kehoea@parhasard.net>
parents: 4885
diff changeset
581 (mapc
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
582 #'(lambda (entry)
4995
8431b52e43b1 Move the various map* functions to C; add #'map-into.
Aidan Kehoe <kehoea@parhasard.net>
parents: 4885
diff changeset
583 (mapc
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
584 #'(lambda (func)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
585 (put func 'lisp-indent-function (nth 1 entry))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
586 (put func 'lisp-indent-hook (nth 1 entry))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
587 (or (get func 'edebug-form-spec)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
588 (put func 'edebug-form-spec (nth 2 entry))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
589 (car entry)))
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cvs
parents:
diff changeset
590 '(((defun* defmacro*) defun)
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cvs
parents:
diff changeset
591 ((function*) nil
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cvs
parents:
diff changeset
592 (&or symbolp ([&optional 'macro] 'lambda (&rest sexp) &rest form)))
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cvs
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593 ((eval-when) 1 (sexp &rest form))
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cvs
parents:
diff changeset
594 ((when unless) 1 (&rest form))
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cvs
parents:
diff changeset
595 ((declare) nil (&rest sexp))
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cvs
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diff changeset
596 ((the) 1 (sexp &rest form))
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cvs
parents:
diff changeset
597 ((case ecase typecase etypecase) 1 (form &rest (sexp &rest form)))
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cvs
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diff changeset
598 ((block return-from) 1 (sexp &rest form))
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cvs
parents:
diff changeset
599 ((return) nil (&optional form))
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cvs
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diff changeset
600 ((do do*) 2 ((&rest &or symbolp (symbolp &optional form form))
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cvs
parents:
diff changeset
601 (form &rest form)
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cvs
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diff changeset
602 &rest form))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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diff changeset
603 ((dolist dotimes) 1 ((symbolp form &rest form) &rest form))
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cvs
parents:
diff changeset
604 ((do-symbols) 1 ((symbolp form &optional form form) &rest form))
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cvs
parents:
diff changeset
605 ((do-all-symbols) 1 ((symbolp form &optional form) &rest form))
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cvs
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diff changeset
606 ((psetq setf psetf) nil edebug-setq-form)
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cvs
parents:
diff changeset
607 ((progv) 2 (&rest form))
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cvs
parents:
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608 ((flet labels macrolet) 1
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609 ((&rest (sexp sexp &rest form)) &rest form))
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610 ((symbol-macrolet lexical-let lexical-let*) 1
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611 ((&rest &or symbolp (symbolp form)) &rest form))
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612 ((multiple-value-bind) 2 ((&rest symbolp) &rest form))
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613 ((multiple-value-setq) 1 ((&rest symbolp) &rest form))
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614 ((incf decf remf pop push pushnew shiftf rotatef) nil (&rest form))
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615 ((letf letf*) 1 ((&rest (&rest form)) &rest form))
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616 ((callf destructuring-bind) 2 (sexp form &rest form))
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617 ((callf2) 3 (sexp form form &rest form))
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618 ((loop) defun (&rest &or symbolp form))
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619 ((ignore-errors) 0 (&rest form))))
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620
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621 ;;; This goes here so that cl-macs can find it if it loads right now.
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2d0937dc83cf Tidying of CL files; make docstrings read better, remove commented-out code
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622 (provide 'cl-19)
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623
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624 ;;; Things to do after byte-compiler is loaded.
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625 ;;; As a side effect, we cause cl-macs to be loaded when compiling, so
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626 ;;; that the compiler-macros defined there will be present.
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627
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628 (defvar cl-hacked-flag nil)
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629 (defun cl-hack-byte-compiler ()
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630 (if (and (not cl-hacked-flag) (fboundp 'byte-compile-file-form))
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631 (progn
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632 (setq cl-hacked-flag t) ; Do it first, to prevent recursion.
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633 (when (not (fboundp 'cl-compile-time-init))
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634 (load "cl-macs" nil t))
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635 (cl-compile-time-init)))) ; In cl-macs.el.
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636
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637 ;;; Try it now in case the compiler has already been loaded.
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638 (cl-hack-byte-compiler)
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639
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0cc9d22c3732 Be more reliable about loading cl-macs at byte-compile time, cl.el.
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640 ;;; Also make a hook in case compiler is loaded after this file.
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641 (add-hook 'bytecomp-load-hook 'cl-hack-byte-compiler)
428
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642
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643 ;;; The following ensures that packages which expect the old-style cl.el
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644 ;;; will be happy with this one.
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645
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646 (provide 'cl)
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647
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648 (run-hooks 'cl-load-hook)
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649
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650 ;;; arch-tag: 5f07fa74-f153-4524-9303-21f5be125851
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651 ;;; cl.el ends here