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1 ;;; lisp-mode.el --- Lisp mode, and its idiosyncratic commands.
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2
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3 ;; Copyright (C) 1985, 1996, 1997 Free Software Foundation, Inc.
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442
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4 ;; Copyright (C) 1995 Tinker Systems.
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428
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5
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6 ;; Maintainer: FSF
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7 ;; Keywords: lisp, languages, dumped
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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22 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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23 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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24 ;; 02111-1307, USA.
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25
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26 ;;; Synched up with: FSF 19.34 (but starting to diverge).
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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 ;; The base major mode for editing Lisp code (used also for Emacs Lisp).
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33 ;; This mode is documented in the Emacs manual
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34
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35 ;;; Code:
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36
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37 (defgroup lisp nil
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38 "Lisp support, including Emacs Lisp."
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39 :group 'languages
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40 :group 'development)
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41
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42 (defvar lisp-mode-syntax-table nil)
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43 (defvar emacs-lisp-mode-syntax-table nil)
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44 (defvar lisp-mode-abbrev-table nil)
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45
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442
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46 (defun construct-lisp-mode-menu (popup-p emacs-lisp-p)
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47 (flet ((popup-wrap (form)
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48 (if popup-p `(menu-call-at-event ',form) form)))
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49 `(,@(if emacs-lisp-p
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50 `(["%_Byte-Compile This File" ,(popup-wrap
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51 'emacs-lisp-byte-compile)]
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52 ["B%_yte-Compile/Load This File"
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53 ,(popup-wrap 'emacs-lisp-byte-compile-and-load)]
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54 ["Byte-%_Recompile Directory..."
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55 ,(popup-wrap 'byte-recompile-directory)]
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56 "---"))
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57 ["%_Evaluate Region or Defun"
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58 ,(popup-wrap '(if (region-exists-p)
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59 (call-interactively 'eval-region)
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60 (call-interactively 'eval-defun)))]
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61 ["Evaluate %_Whole Buffer" ,(popup-wrap 'eval-current-buffer)]
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62 ["Evaluate Last %_S-expression" ,(popup-wrap 'eval-last-sexp)]
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63 "---"
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64 ,@(if popup-p
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65 '(["%_Find Function"
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66 (find-function (menu-call-at-event '(function-at-point)))
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67 :suffix (let ((fun (menu-call-at-event '(function-at-point))))
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68 (if fun (symbol-name fun) ""))
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69 :active (and (fboundp 'find-function)
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70 (menu-call-at-event '(function-at-point)))]
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71 ["%_Find Variable"
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72 (find-variable (menu-call-at-event '(variable-at-point)))
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73 :suffix (let ((fun (menu-call-at-event '(variable-at-point))))
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74 (if fun (symbol-name fun) ""))
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75 :active (and (fboundp 'find-variable)
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76 (menu-call-at-event '(variable-at-point)))]
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77 ["%_Help on Function"
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78 (describe-function (menu-call-at-event '(function-at-point)))
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79 :suffix (let ((fun (menu-call-at-event '(function-at-point))))
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80 (if fun (symbol-name fun) ""))
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81 :active (and (fboundp 'describe-function)
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82 (menu-call-at-event '(function-at-point)))]
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83 ["%_Help on Variable"
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84 (describe-variable (menu-call-at-event '(variable-at-point)))
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85 :suffix (let ((fun (menu-call-at-event '(variable-at-point))))
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86 (if fun (symbol-name fun) ""))
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87 :active (and (fboundp 'describe-variable)
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88 (menu-call-at-event '(variable-at-point)))])
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89 '(["Find %_Function..." find-function
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90 :active (fboundp 'find-function)]
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91 ["Find %_Variable..." find-variable
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92 :active (fboundp 'find-variable)]
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93 ["%_Help on Function..." describe-function
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94 :active (fboundp 'describe-function)]
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95 ["Hel%_p on Variable..." describe-variable
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96 :active (fboundp 'describe-variable)]))
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97 "---"
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98 ["Instrument This Defun for %_Debugging" ,(popup-wrap 'edebug-defun)]
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99 ["%_Trace Function..." trace-function-background]
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100 ["%_Untrace All Functions" untrace-all
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101 :active (fboundp 'untrace-all)]
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102 "---"
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103 ["%_Comment Out Region" comment-region :active (region-exists-p)]
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104 "---"
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105 ["%_Indent Region or Balanced Expression"
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106 ,(popup-wrap '(if (region-exists-p)
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107 (call-interactively 'indent-region)
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108 (call-interactively 'indent-sexp)))]
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109 ["I%_ndent Defun"
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110 ,(popup-wrap '(progn
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111 (beginning-of-defun)
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112 (indent-sexp)))]
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113 "---"
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114 "Look for debug-on-error under Options->Troubleshooting"
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115 )))
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116
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117 (defvar lisp-interaction-mode-popup-menu
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118 (cons "Lisp-Interaction" (construct-lisp-mode-menu t nil)))
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119
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120 (defvar emacs-lisp-mode-popup-menu
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121 (cons "Emacs-Lisp" (construct-lisp-mode-menu t t)))
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428
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122
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123 ;Don't have a menubar entry in Lisp Interaction mode. Otherwise, the
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124 ;*scratch* buffer has a Lisp menubar item! Very confusing.
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442
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125 ;Jan Vroonhof really wants this, so it's back. --ben
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126 (defvar lisp-interaction-mode-menubar-menu
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127 (cons "%_Lisp" (construct-lisp-mode-menu nil nil)))
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128
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129 (defvar emacs-lisp-mode-menubar-menu
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130 (cons "%_Lisp" (construct-lisp-mode-menu nil t)))
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131
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132 (if (not emacs-lisp-mode-syntax-table)
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133 (let ((i 0))
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134 (setq emacs-lisp-mode-syntax-table (make-syntax-table))
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135 (while (< i ?0)
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136 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
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137 (setq i (1+ i)))
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138 (setq i (1+ ?9))
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139 (while (< i ?A)
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140 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
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141 (setq i (1+ i)))
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142 (setq i (1+ ?Z))
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143 (while (< i ?a)
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144 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
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145 (setq i (1+ i)))
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146 (setq i (1+ ?z))
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147 (while (< i 128)
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148 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
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149 (setq i (1+ i)))
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150 (modify-syntax-entry ? " " emacs-lisp-mode-syntax-table)
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151 (modify-syntax-entry ?\t " " emacs-lisp-mode-syntax-table)
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152 (modify-syntax-entry ?\f " " emacs-lisp-mode-syntax-table)
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153 (modify-syntax-entry ?\n "> " emacs-lisp-mode-syntax-table)
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154 ;; Give CR the same syntax as newline, for selective-display.
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155 (modify-syntax-entry ?\^m "> " emacs-lisp-mode-syntax-table)
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156 (modify-syntax-entry ?\; "< " emacs-lisp-mode-syntax-table)
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157 (modify-syntax-entry ?` "' " emacs-lisp-mode-syntax-table)
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158 (modify-syntax-entry ?' "' " emacs-lisp-mode-syntax-table)
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159 (modify-syntax-entry ?, "' " emacs-lisp-mode-syntax-table)
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160 ;; Used to be singlequote; changed for flonums.
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161 (modify-syntax-entry ?. "_ " emacs-lisp-mode-syntax-table)
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162 (modify-syntax-entry ?# "' " emacs-lisp-mode-syntax-table)
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163 (modify-syntax-entry ?\" "\" " emacs-lisp-mode-syntax-table)
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164 (modify-syntax-entry ?\\ "\\ " emacs-lisp-mode-syntax-table)
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165 (modify-syntax-entry ?\( "() " emacs-lisp-mode-syntax-table)
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166 (modify-syntax-entry ?\) ")( " emacs-lisp-mode-syntax-table)
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167 (modify-syntax-entry ?\[ "(] " emacs-lisp-mode-syntax-table)
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168 (modify-syntax-entry ?\] ")[ " emacs-lisp-mode-syntax-table)))
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169
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170 (if (not lisp-mode-syntax-table)
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171 (progn (setq lisp-mode-syntax-table
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172 (copy-syntax-table emacs-lisp-mode-syntax-table))
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173 (modify-syntax-entry ?\| "\" " lisp-mode-syntax-table)
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174 (modify-syntax-entry ?\[ "_ " lisp-mode-syntax-table)
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175 ;; XEmacs changes
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176 (modify-syntax-entry ?\] "_ " lisp-mode-syntax-table)
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177 ;;
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178 ;; If emacs was compiled with NEW_SYNTAX, then do
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179 ;; CL's #| |# block comments.
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180 (if (= 8 (length (parse-partial-sexp (point) (point))))
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181 (progn
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182 (modify-syntax-entry ?# "' 58" lisp-mode-syntax-table)
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183 (modify-syntax-entry ?| ". 67" lisp-mode-syntax-table))
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184 ;; else, old style
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185 (modify-syntax-entry ?\| "\" " lisp-mode-syntax-table))))
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186
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187 (define-abbrev-table 'lisp-mode-abbrev-table ())
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188
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189 (defvar lisp-imenu-generic-expression
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190 '(
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191 (nil
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192 "^\\s-*(def\\(un\\|subst\\|macro\\|advice\\)\\s-+\\([-A-Za-z0-9+*|:]+\\)" 2)
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193 ("Variables"
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194 "^\\s-*(def\\(var\\|const\\|custom\\)\\s-+\\([-A-Za-z0-9+*|:]+\\)" 2)
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195 ("Types"
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196 "^\\s-*(def\\(group\\|type\\|struct\\|class\\|ine-condition\\)\\s-+\\([-A-Za-z0-9+*|:]+\\)"
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197 2))
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198
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199 "Imenu generic expression for Lisp mode. See `imenu-generic-expression'.")
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200
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201 (defun lisp-mode-variables (lisp-syntax)
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202 (cond (lisp-syntax
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203 (set-syntax-table lisp-mode-syntax-table)))
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204 (setq local-abbrev-table lisp-mode-abbrev-table)
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205 (make-local-variable 'paragraph-start)
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206 (setq paragraph-start (concat page-delimiter "\\|$" ))
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207 (make-local-variable 'paragraph-separate)
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208 (setq paragraph-separate paragraph-start)
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209 (make-local-variable 'paragraph-ignore-fill-prefix)
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210 (setq paragraph-ignore-fill-prefix t)
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211 (make-local-variable 'fill-paragraph-function)
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212 (setq fill-paragraph-function 'lisp-fill-paragraph)
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213 ;; Adaptive fill mode gets in the way of auto-fill,
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214 ;; and should make no difference for explicit fill
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215 ;; because lisp-fill-paragraph should do the job.
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216 (make-local-variable 'adaptive-fill-mode)
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217 (setq adaptive-fill-mode nil)
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218 (make-local-variable 'indent-line-function)
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219 (setq indent-line-function 'lisp-indent-line)
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220 (make-local-variable 'indent-region-function)
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221 (setq indent-region-function 'lisp-indent-region)
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222 (make-local-variable 'parse-sexp-ignore-comments)
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223 (setq parse-sexp-ignore-comments t)
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224 (make-local-variable 'outline-regexp)
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225 (setq outline-regexp ";;; \\|(....")
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226 (make-local-variable 'comment-start)
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227 (setq comment-start ";")
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228 ;; XEmacs change
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229 (set (make-local-variable 'block-comment-start) ";;")
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230 (make-local-variable 'comment-start-skip)
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231 ;; Look within the line for a ; following an even number of backslashes
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232 ;; after either a non-backslash or the line beginning.
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233 (setq comment-start-skip "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+ *")
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234 (make-local-variable 'comment-column)
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235 (setq comment-column 40)
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236 (make-local-variable 'comment-indent-function)
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237 (setq comment-indent-function 'lisp-comment-indent)
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238 ;; XEmacs change
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239 (set (make-local-variable 'dabbrev-case-fold-search) nil)
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240 (set (make-local-variable 'dabbrev-case-replace) nil)
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241 (make-local-variable 'imenu-generic-expression)
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242 (setq imenu-generic-expression lisp-imenu-generic-expression))
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243
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244 (defvar shared-lisp-mode-map ()
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245 "Keymap for commands shared by all sorts of Lisp modes.")
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246
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247 (if shared-lisp-mode-map
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248 ()
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249 (setq shared-lisp-mode-map (make-sparse-keymap))
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250 ;; XEmacs changes
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251 (set-keymap-name shared-lisp-mode-map 'shared-lisp-mode-map)
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252 (define-key shared-lisp-mode-map "\M-;" 'lisp-indent-for-comment)
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253 (define-key shared-lisp-mode-map "\e\C-q" 'indent-sexp))
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254
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255 (defvar emacs-lisp-mode-map ()
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256 "Keymap for Emacs Lisp mode.
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257 All commands in `shared-lisp-mode-map' are inherited by this map.")
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258
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259 (if emacs-lisp-mode-map
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260 ()
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261 ;; XEmacs: Ignore FSF nconc stuff
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262 (setq emacs-lisp-mode-map (make-sparse-keymap))
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263 (set-keymap-name emacs-lisp-mode-map 'emacs-lisp-mode-map)
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264 (set-keymap-parents emacs-lisp-mode-map (list shared-lisp-mode-map))
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265 (define-key emacs-lisp-mode-map "\e\t" 'lisp-complete-symbol)
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266 (define-key emacs-lisp-mode-map "\e\C-x" 'eval-defun)
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267 ;; XEmacs: Not sure what the FSF menu bindings are. I hope XEmacs
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268 ;; doesn't need them.
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269 )
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270
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271 (defun emacs-lisp-byte-compile ()
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272 "Byte compile the file containing the current buffer."
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273 (interactive)
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274 (if buffer-file-name
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275 ;; XEmacs change. Force buffer save first
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276 (progn
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277 (save-buffer)
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278 (byte-compile-file buffer-file-name))
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279 (error "The buffer must be saved in a file first.")))
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280
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281 (defun emacs-lisp-byte-compile-and-load ()
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282 "Byte-compile the current file (if it has changed), then load compiled code."
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283 (interactive)
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284 (or buffer-file-name
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285 (error "The buffer must be saved in a file first"))
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286 (require 'bytecomp)
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287 ;; Recompile if file or buffer has changed since last compilation.
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288 (if (and (buffer-modified-p)
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289 (y-or-n-p (format "save buffer %s first? " (buffer-name))))
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290 (save-buffer))
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291 (let ((compiled-file-name (byte-compile-dest-file buffer-file-name)))
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292 (if (file-newer-than-file-p compiled-file-name buffer-file-name)
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293 (load-file compiled-file-name)
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294 (byte-compile-file buffer-file-name t))))
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295
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296 (defun emacs-lisp-mode ()
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297 "Major mode for editing Lisp code to run in Emacs.
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298 Commands:
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299 Delete converts tabs to spaces as it moves back.
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300 Blank lines separate paragraphs. Semicolons start comments.
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301 \\{emacs-lisp-mode-map}
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302 Entry to this mode calls the value of `emacs-lisp-mode-hook'
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303 if that value is non-nil."
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304 (interactive)
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305 (kill-all-local-variables)
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306 (use-local-map emacs-lisp-mode-map)
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307 (set-syntax-table emacs-lisp-mode-syntax-table)
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308 ;; XEmacs changes
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309 (setq major-mode 'emacs-lisp-mode
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442
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310 mode-popup-menu emacs-lisp-mode-popup-menu
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428
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311 mode-name "Emacs-Lisp")
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442
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312 (if (and (featurep 'menubar)
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313 current-menubar)
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314 (progn
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428
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315 ;; make a local copy of the menubar, so our modes don't
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316 ;; change the global menubar
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442
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317 (set-buffer-menubar current-menubar)
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318 (add-submenu nil emacs-lisp-mode-menubar-menu)))
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428
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319 (lisp-mode-variables nil)
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320 (run-hooks 'emacs-lisp-mode-hook))
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321
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430
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322 (put 'emacs-lisp-mode 'font-lock-lisp-like t)
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323
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428
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324 (defvar lisp-mode-map ()
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325 "Keymap for ordinary Lisp mode.
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326 All commands in `shared-lisp-mode-map' are inherited by this map.")
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327
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328 (if lisp-mode-map
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329 ()
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330 ;; XEmacs changes
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331 (setq lisp-mode-map (make-sparse-keymap))
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332 (set-keymap-name lisp-mode-map 'lisp-mode-map)
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333 (set-keymap-parents lisp-mode-map (list shared-lisp-mode-map))
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334 (define-key lisp-mode-map "\e\C-x" 'lisp-send-defun)
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335 ;; gag, no. use ilisp. -jwz
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336 ;; (define-key lisp-mode-map "\C-c\C-z" 'run-lisp)
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337 )
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338
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339 (defun lisp-mode ()
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340 "Major mode for editing Lisp code for Lisps other than GNU Emacs Lisp.
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341 Commands:
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342 Delete converts tabs to spaces as it moves back.
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343 Blank lines separate paragraphs. Semicolons start comments.
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344 \\{lisp-mode-map}
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345 Note that `run-lisp' may be used either to start an inferior Lisp job
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346 or to switch back to an existing one.
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347
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348 Entry to this mode calls the value of `lisp-mode-hook'
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349 if that value is non-nil."
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350 (interactive)
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351 (kill-all-local-variables)
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352 (use-local-map lisp-mode-map)
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353 (setq major-mode 'lisp-mode)
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354 (setq mode-name "Lisp")
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355 (lisp-mode-variables t)
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356 (set-syntax-table lisp-mode-syntax-table)
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357 (run-hooks 'lisp-mode-hook))
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358
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359 ;; This will do unless shell.el is loaded.
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360 ;; XEmacs change
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361 (defun lisp-send-defun ()
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362 "Send the current defun to the Lisp process made by \\[run-lisp]."
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363 (interactive)
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364 (error "Process lisp does not exist"))
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365
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366 ;; XEmacs change: emacs-lisp-mode-map is a more appropriate parent.
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367 (defvar lisp-interaction-mode-map ()
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368 "Keymap for Lisp Interaction mode.
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369 All commands in `shared-lisp-mode-map' are inherited by this map.")
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370
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371 (if lisp-interaction-mode-map
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372 ()
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373 ;; XEmacs set keymap our way
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374 (setq lisp-interaction-mode-map (make-sparse-keymap))
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375 (set-keymap-name lisp-interaction-mode-map 'lisp-interaction-mode-map)
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376 (set-keymap-parents lisp-interaction-mode-map (list emacs-lisp-mode-map))
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377 (define-key lisp-interaction-mode-map "\e\C-x" 'eval-defun)
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378 (define-key lisp-interaction-mode-map "\e\t" 'lisp-complete-symbol)
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379 (define-key lisp-interaction-mode-map "\n" 'eval-print-last-sexp))
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380
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381 (defun lisp-interaction-mode ()
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382 "Major mode for typing and evaluating Lisp forms.
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383 Like Lisp mode except that \\[eval-print-last-sexp] evals the Lisp expression
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384 before point, and prints its value into the buffer, advancing point.
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385
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386 Commands:
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387 Delete converts tabs to spaces as it moves back.
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388 Paragraphs are separated only by blank lines.
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389 Semicolons start comments.
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390 \\{lisp-interaction-mode-map}
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391 Entry to this mode calls the value of `lisp-interaction-mode-hook'
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392 if that value is non-nil."
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393 (interactive)
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394 (kill-all-local-variables)
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395 (use-local-map lisp-interaction-mode-map)
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396 (setq major-mode 'lisp-interaction-mode)
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397 (setq mode-name "Lisp Interaction")
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442
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398 (setq mode-popup-menu lisp-interaction-mode-popup-menu)
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399 (if (and (featurep 'menubar)
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400 current-menubar)
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401 (progn
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402 ;; make a local copy of the menubar, so our modes don't
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403 ;; change the global menubar
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404 (set-buffer-menubar current-menubar)
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405 (add-submenu nil lisp-interaction-mode-menubar-menu)))
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428
|
406 (set-syntax-table emacs-lisp-mode-syntax-table)
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407 (lisp-mode-variables nil)
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408 (run-hooks 'lisp-interaction-mode-hook))
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409
|
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410 (defun eval-print-last-sexp ()
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411 "Evaluate sexp before point; print value into current buffer."
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412 (interactive)
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|
413 (let ((standard-output (current-buffer)))
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414 (terpri)
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415 (eval-last-sexp t)
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416 (terpri)))
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417
|
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|
418 ;; XEmacs change
|
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|
419 (defcustom eval-interactive-verbose t
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420 "*Non-nil means that interactive evaluation can print messages.
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|
421 The messages are printed when the expression is treated differently
|
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422 using `\\[eval-last-sexp]' and `\\[eval-defun]' than it than it would have been
|
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423 treated noninteractively.
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424
|
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425 The printed messages are \"defvar treated as defconst\" and \"defcustom
|
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426 evaluation forced\". See `eval-interactive' for more details."
|
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|
427 :type 'boolean
|
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|
428 :group 'lisp)
|
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429
|
|
|
430 (defun eval-interactive (expr)
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|
431 "Like `eval' except that it transforms defvars to defconsts.
|
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|
432 The evaluation of defcustom forms is forced."
|
|
|
433 (cond ((and (eq (car-safe expr) 'defvar)
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|
434 (> (length expr) 2))
|
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|
435 (eval (cons 'defconst (cdr expr)))
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|
|
436 (when eval-interactive-verbose
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|
|
437 (message "defvar treated as defconst")
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|
|
438 (sit-for 1)
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|
|
439 (message ""))
|
|
|
440 (nth 1 expr))
|
|
|
441 ((and (eq (car-safe expr) 'defcustom)
|
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|
442 (> (length expr) 2)
|
|
|
443 (default-boundp (nth 1 expr)))
|
|
|
444 ;; Force variable to be bound
|
|
|
445 ;; #### defcustom might specify a different :set method.
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|
|
446 (set-default (nth 1 expr) (eval (nth 2 expr)))
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|
|
447 ;; And evaluate the defcustom
|
|
|
448 (eval expr)
|
|
|
449 (when eval-interactive-verbose
|
|
|
450 (message "defcustom evaluation forced")
|
|
|
451 (sit-for 1)
|
|
|
452 (message ""))
|
|
|
453 (nth 1 expr))
|
|
|
454 (t
|
|
|
455 (eval expr))))
|
|
|
456
|
|
|
457 ;; XEmacs change, based on Bob Weiner suggestion
|
|
|
458 (defun eval-last-sexp (eval-last-sexp-arg-internal) ;dynamic scoping wonderment
|
|
|
459 "Evaluate sexp before point; print value in minibuffer.
|
|
|
460 With argument, print output into current buffer."
|
|
|
461 (interactive "P")
|
|
|
462 (let ((standard-output (if eval-last-sexp-arg-internal (current-buffer) t))
|
|
|
463 (opoint (point))
|
|
|
464 ignore-quotes)
|
|
|
465 (prin1 (eval-interactive
|
|
|
466 (letf (((syntax-table) emacs-lisp-mode-syntax-table))
|
|
|
467 (save-excursion
|
|
|
468 ;; If this sexp appears to be enclosed in `...' then
|
|
|
469 ;; ignore the surrounding quotes.
|
|
|
470 (setq ignore-quotes (or (eq (char-after) ?\')
|
|
|
471 (eq (char-before) ?\')))
|
|
|
472 (forward-sexp -1)
|
|
|
473 ;; vladimir@cs.ualberta.ca 30-Jul-1997: skip ` in
|
|
|
474 ;; `variable' so that the value is returned, not the
|
|
|
475 ;; name.
|
|
|
476 (if (and ignore-quotes
|
|
|
477 (eq (char-after) ?\`))
|
|
|
478 (forward-char))
|
|
|
479 (save-restriction
|
|
|
480 (narrow-to-region (point-min) opoint)
|
|
|
481 (let ((expr (read (current-buffer))))
|
|
|
482 (if (eq (car-safe expr) 'interactive)
|
|
|
483 ;; If it's an (interactive ...) form, it's
|
|
|
484 ;; more useful to show how an interactive call
|
|
|
485 ;; would use it.
|
|
|
486 `(call-interactively
|
|
|
487 (lambda (&rest args)
|
|
|
488 ,expr args))
|
|
|
489 expr)))))))))
|
|
|
490
|
|
|
491 (defun eval-defun (eval-defun-arg-internal)
|
|
|
492 "Evaluate defun that point is in or before.
|
|
|
493 Print value in minibuffer.
|
|
|
494 With argument, insert value in current buffer after the defun."
|
|
|
495 (interactive "P")
|
|
|
496 (let ((standard-output (if eval-defun-arg-internal (current-buffer) t)))
|
|
|
497 (prin1 (eval-interactive (save-excursion
|
|
|
498 (end-of-defun)
|
|
|
499 (beginning-of-defun)
|
|
|
500 (read (current-buffer)))))))
|
|
|
501
|
|
|
502
|
|
|
503 (defun lisp-comment-indent ()
|
|
|
504 (if (looking-at "\\s<\\s<\\s<")
|
|
|
505 (current-column)
|
|
|
506 (if (looking-at "\\s<\\s<")
|
|
|
507 ;; #### FSF has:
|
|
|
508 ;; (let ((tem (or (calculate-lisp-indent) (current-column)))) ...
|
|
|
509 (let ((tem (calculate-lisp-indent)))
|
|
|
510 (if (listp tem) (car tem) tem))
|
|
|
511 (skip-chars-backward " \t")
|
|
|
512 (max (if (bolp) 0 (1+ (current-column)))
|
|
|
513 comment-column))))
|
|
|
514
|
|
|
515 ;; XEmacs change
|
|
|
516 (defun lisp-indent-for-comment ()
|
|
|
517 "Indent this line's comment appropriately, or insert an empty comment.
|
|
|
518 If adding a new comment on a blank line, use `block-comment-start' instead
|
|
|
519 of `comment-start' to open the comment."
|
|
|
520 ;; by Stig@hackvan.com
|
|
|
521 ;; #### - This functionality, the recognition of block-comment-{start,end},
|
|
|
522 ;; will perhaps be standardized across modes and move to indent-for-comment.
|
|
|
523 (interactive)
|
|
|
524 (if (and block-comment-start
|
|
|
525 (save-excursion (beginning-of-line) (looking-at "^[ \t]*$")))
|
|
|
526 (insert block-comment-start))
|
|
|
527 (indent-for-comment))
|
|
|
528
|
|
|
529 (defvar lisp-indent-offset nil)
|
|
|
530 (defvar lisp-indent-function 'lisp-indent-function)
|
|
|
531
|
|
|
532 (defun lisp-indent-line (&optional whole-exp)
|
|
|
533 "Indent current line as Lisp code.
|
|
|
534 With argument, indent any additional lines of the same expression
|
|
|
535 rigidly along with this one."
|
|
|
536 (interactive "P")
|
|
|
537 (let ((indent (calculate-lisp-indent)) shift-amt beg end
|
|
|
538 (pos (- (point-max) (point))))
|
|
|
539 (beginning-of-line)
|
|
|
540 (setq beg (point))
|
|
|
541 (skip-chars-forward " \t")
|
|
|
542 (if (looking-at "\\s<\\s<\\s<")
|
|
|
543 ;; Don't alter indentation of a ;;; comment line.
|
|
|
544 (goto-char (- (point-max) pos))
|
|
|
545 (if (and (looking-at "\\s<") (not (looking-at "\\s<\\s<")))
|
|
|
546 ;; Single-semicolon comment lines should be indented
|
|
|
547 ;; as comment lines, not as code.
|
|
|
548 (progn (indent-for-comment) (forward-char -1))
|
|
|
549 (if (listp indent) (setq indent (car indent)))
|
|
|
550 (setq shift-amt (- indent (current-column)))
|
|
|
551 (if (zerop shift-amt)
|
|
|
552 nil
|
|
|
553 (delete-region beg (point))
|
|
|
554 (indent-to indent)))
|
|
|
555 ;; If initial point was within line's indentation,
|
|
|
556 ;; position after the indentation. Else stay at same point in text.
|
|
|
557 (if (> (- (point-max) pos) (point))
|
|
|
558 (goto-char (- (point-max) pos)))
|
|
|
559 ;; If desired, shift remaining lines of expression the same amount.
|
|
|
560 (and whole-exp (not (zerop shift-amt))
|
|
|
561 (save-excursion
|
|
|
562 (goto-char beg)
|
|
|
563 (forward-sexp 1)
|
|
|
564 (setq end (point))
|
|
|
565 (goto-char beg)
|
|
|
566 (forward-line 1)
|
|
|
567 (setq beg (point))
|
|
|
568 (> end beg))
|
|
|
569 (indent-code-rigidly beg end shift-amt)))))
|
|
|
570
|
|
|
571 (defvar calculate-lisp-indent-last-sexp)
|
|
|
572
|
|
|
573 (defun calculate-lisp-indent (&optional parse-start)
|
|
|
574 "Return appropriate indentation for current line as Lisp code.
|
|
|
575 In usual case returns an integer: the column to indent to.
|
|
|
576 Can instead return a list, whose car is the column to indent to.
|
|
|
577 This means that following lines at the same level of indentation
|
|
|
578 should not necessarily be indented the same way.
|
|
|
579 The second element of the list is the buffer position
|
|
|
580 of the start of the containing expression."
|
|
|
581 (save-excursion
|
|
|
582 (beginning-of-line)
|
|
|
583 (let ((indent-point (point))
|
|
|
584 ;; XEmacs change (remove paren-depth)
|
|
|
585 state ;;paren-depth
|
|
|
586 ;; setting this to a number inhibits calling hook
|
|
|
587 (desired-indent nil)
|
|
|
588 (retry t)
|
|
|
589 calculate-lisp-indent-last-sexp containing-sexp)
|
|
|
590 (if parse-start
|
|
|
591 (goto-char parse-start)
|
|
|
592 (beginning-of-defun))
|
|
|
593 ;; Find outermost containing sexp
|
|
|
594 (while (< (point) indent-point)
|
|
|
595 (setq state (parse-partial-sexp (point) indent-point 0)))
|
|
|
596 ;; Find innermost containing sexp
|
|
|
597 (while (and retry
|
|
|
598 state
|
|
|
599 ;; XEmacs change (remove paren-depth)
|
|
|
600 (> ;;(setq paren-depth (elt state 0))
|
|
|
601 (elt state 0)
|
|
|
602 0))
|
|
|
603 (setq retry nil)
|
|
|
604 (setq calculate-lisp-indent-last-sexp (elt state 2))
|
|
|
605 (setq containing-sexp (elt state 1))
|
|
|
606 ;; Position following last unclosed open.
|
|
|
607 (goto-char (1+ containing-sexp))
|
|
|
608 ;; Is there a complete sexp since then?
|
|
|
609 (if (and calculate-lisp-indent-last-sexp
|
|
|
610 (> calculate-lisp-indent-last-sexp (point)))
|
|
|
611 ;; Yes, but is there a containing sexp after that?
|
|
|
612 (let ((peek (parse-partial-sexp calculate-lisp-indent-last-sexp
|
|
|
613 indent-point 0)))
|
|
|
614 (if (setq retry (car (cdr peek))) (setq state peek)))))
|
|
|
615 (if retry
|
|
|
616 nil
|
|
|
617 ;; Innermost containing sexp found
|
|
|
618 (goto-char (1+ containing-sexp))
|
|
|
619 (if (not calculate-lisp-indent-last-sexp)
|
|
|
620 ;; indent-point immediately follows open paren.
|
|
|
621 ;; Don't call hook.
|
|
|
622 (setq desired-indent (current-column))
|
|
|
623 ;; Find the start of first element of containing sexp.
|
|
|
624 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
|
|
|
625 (cond ((looking-at "\\s(")
|
|
|
626 ;; First element of containing sexp is a list.
|
|
|
627 ;; Indent under that list.
|
|
|
628 )
|
|
|
629 ((> (save-excursion (forward-line 1) (point))
|
|
|
630 calculate-lisp-indent-last-sexp)
|
|
|
631 ;; This is the first line to start within the containing sexp.
|
|
|
632 ;; It's almost certainly a function call.
|
|
|
633 (if (= (point) calculate-lisp-indent-last-sexp)
|
|
|
634 ;; Containing sexp has nothing before this line
|
|
|
635 ;; except the first element. Indent under that element.
|
|
|
636 nil
|
|
|
637 ;; Skip the first element, find start of second (the first
|
|
|
638 ;; argument of the function call) and indent under.
|
|
|
639 (progn (forward-sexp 1)
|
|
|
640 (parse-partial-sexp (point)
|
|
|
641 calculate-lisp-indent-last-sexp
|
|
|
642 0 t)))
|
|
|
643 (backward-prefix-chars))
|
|
|
644 (t
|
|
|
645 ;; Indent beneath first sexp on same line as
|
|
|
646 ;; calculate-lisp-indent-last-sexp. Again, it's
|
|
|
647 ;; almost certainly a function call.
|
|
|
648 (goto-char calculate-lisp-indent-last-sexp)
|
|
|
649 (beginning-of-line)
|
|
|
650 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp
|
|
|
651 0 t)
|
|
|
652 (backward-prefix-chars)))))
|
|
|
653 ;; Point is at the point to indent under unless we are inside a string.
|
|
|
654 ;; Call indentation hook except when overridden by lisp-indent-offset
|
|
|
655 ;; or if the desired indentation has already been computed.
|
|
|
656 (let ((normal-indent (current-column)))
|
|
|
657 (cond ((elt state 3)
|
|
|
658 ;; Inside a string, don't change indentation.
|
|
|
659 (goto-char indent-point)
|
|
|
660 (skip-chars-forward " \t")
|
|
|
661 (current-column))
|
|
|
662 (desired-indent)
|
|
|
663 ((and (boundp 'lisp-indent-function)
|
|
|
664 lisp-indent-function
|
|
|
665 (not retry))
|
|
|
666 (or (funcall lisp-indent-function indent-point state)
|
|
|
667 normal-indent))
|
|
|
668 ;; XEmacs change:
|
|
|
669 ;; lisp-indent-offset shouldn't override lisp-indent-function !
|
|
|
670 ((and (integerp lisp-indent-offset) containing-sexp)
|
|
|
671 ;; Indent by constant offset
|
|
|
672 (goto-char containing-sexp)
|
|
|
673 (+ normal-indent lisp-indent-offset))
|
|
|
674 (t
|
|
|
675 normal-indent))))))
|
|
|
676
|
|
|
677 (defun lisp-indent-function (indent-point state)
|
|
|
678 ;; free reference to `calculate-lisp-indent-last-sexp'
|
|
|
679 ;; in #'calculate-lisp-indent
|
|
|
680 (let ((normal-indent (current-column)))
|
|
|
681 (goto-char (1+ (elt state 1)))
|
|
|
682 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
|
|
|
683 (if (and (elt state 2)
|
|
|
684 (not (looking-at "\\sw\\|\\s_")))
|
|
|
685 ;; car of form doesn't seem to be a a symbol
|
|
|
686 (progn
|
|
|
687 (if (not (> (save-excursion (forward-line 1) (point))
|
|
|
688 calculate-lisp-indent-last-sexp))
|
|
|
689 (progn (goto-char calculate-lisp-indent-last-sexp)
|
|
|
690 (beginning-of-line)
|
|
|
691 (parse-partial-sexp (point)
|
|
|
692 calculate-lisp-indent-last-sexp 0 t)))
|
|
|
693 ;; Indent under the list or under the first sexp on the same
|
|
|
694 ;; line as calculate-lisp-indent-last-sexp. Note that first
|
|
|
695 ;; thing on that line has to be complete sexp since we are
|
|
|
696 ;; inside the innermost containing sexp.
|
|
|
697 (backward-prefix-chars)
|
|
|
698 (current-column))
|
|
|
699 (let ((function (buffer-substring (point)
|
|
|
700 (progn (forward-sexp 1) (point))))
|
|
|
701 method)
|
|
442
|
702 (if (condition-case nil
|
|
|
703 (save-excursion
|
|
|
704 (backward-up-list 1)
|
|
|
705 (backward-up-list 1)
|
|
|
706 (backward-up-list 1)
|
|
|
707 (looking-at "(flet\\s-"))
|
|
|
708 (error nil))
|
|
|
709 (setq method 'defun)
|
|
|
710 (setq method (or (get (intern-soft function) 'lisp-indent-function)
|
|
|
711 (get (intern-soft function) 'lisp-indent-hook))))
|
|
428
|
712 (cond ((or (eq method 'defun)
|
|
|
713 (and (null method)
|
|
|
714 (> (length function) 3)
|
|
|
715 (string-match "\\`def" function)))
|
|
|
716 (lisp-indent-defform state indent-point))
|
|
|
717 ((integerp method)
|
|
|
718 (lisp-indent-specform method state
|
|
|
719 indent-point normal-indent))
|
|
|
720 (method
|
|
|
721 (funcall method state indent-point)))))))
|
|
|
722
|
|
|
723 (defvar lisp-body-indent 2
|
|
|
724 "Number of columns to indent the second line of a `(def...)' form.")
|
|
|
725
|
|
|
726 (defun lisp-indent-specform (count state indent-point normal-indent)
|
|
|
727 (let ((containing-form-start (elt state 1))
|
|
|
728 (i count)
|
|
|
729 body-indent containing-form-column)
|
|
|
730 ;; Move to the start of containing form, calculate indentation
|
|
|
731 ;; to use for non-distinguished forms (> count), and move past the
|
|
|
732 ;; function symbol. lisp-indent-function guarantees that there is at
|
|
|
733 ;; least one word or symbol character following open paren of containing
|
|
|
734 ;; form.
|
|
|
735 (goto-char containing-form-start)
|
|
|
736 (setq containing-form-column (current-column))
|
|
|
737 (setq body-indent (+ lisp-body-indent containing-form-column))
|
|
|
738 (forward-char 1)
|
|
|
739 (forward-sexp 1)
|
|
|
740 ;; Now find the start of the last form.
|
|
|
741 (parse-partial-sexp (point) indent-point 1 t)
|
|
|
742 (while (and (< (point) indent-point)
|
|
|
743 (condition-case ()
|
|
|
744 (progn
|
|
|
745 (setq count (1- count))
|
|
|
746 (forward-sexp 1)
|
|
|
747 (parse-partial-sexp (point) indent-point 1 t))
|
|
|
748 (error nil))))
|
|
|
749 ;; Point is sitting on first character of last (or count) sexp.
|
|
|
750 (if (> count 0)
|
|
|
751 ;; A distinguished form. If it is the first or second form use double
|
|
|
752 ;; lisp-body-indent, else normal indent. With lisp-body-indent bound
|
|
|
753 ;; to 2 (the default), this just happens to work the same with if as
|
|
|
754 ;; the older code, but it makes unwind-protect, condition-case,
|
|
|
755 ;; with-output-to-temp-buffer, et. al. much more tasteful. The older,
|
|
|
756 ;; less hacked, behavior can be obtained by replacing below with
|
|
|
757 ;; (list normal-indent containing-form-start).
|
|
|
758 (if (<= (- i count) 1)
|
|
|
759 (list (+ containing-form-column (* 2 lisp-body-indent))
|
|
|
760 containing-form-start)
|
|
|
761 (list normal-indent containing-form-start))
|
|
|
762 ;; A non-distinguished form. Use body-indent if there are no
|
|
|
763 ;; distinguished forms and this is the first undistinguished form,
|
|
|
764 ;; or if this is the first undistinguished form and the preceding
|
|
|
765 ;; distinguished form has indentation at least as great as body-indent.
|
|
|
766 (if (or (and (= i 0) (= count 0))
|
|
|
767 (and (= count 0) (<= body-indent normal-indent)))
|
|
|
768 body-indent
|
|
|
769 normal-indent))))
|
|
|
770
|
|
|
771 (defun lisp-indent-defform (state indent-point)
|
|
|
772 (goto-char (car (cdr state)))
|
|
|
773 (forward-line 1)
|
|
|
774 (if (> (point) (car (cdr (cdr state))))
|
|
|
775 (progn
|
|
|
776 (goto-char (car (cdr state)))
|
|
|
777 (+ lisp-body-indent (current-column)))))
|
|
|
778
|
|
|
779
|
|
|
780 ;; (put 'progn 'lisp-indent-function 0), say, causes progn to be indented
|
|
|
781 ;; like defun if the first form is placed on the next line, otherwise
|
|
|
782 ;; it is indented like any other form (i.e. forms line up under first).
|
|
|
783
|
|
|
784 (put 'lambda 'lisp-indent-function 'defun)
|
|
|
785 (put 'autoload 'lisp-indent-function 'defun)
|
|
|
786 (put 'progn 'lisp-indent-function 0)
|
|
|
787 (put 'prog1 'lisp-indent-function 1)
|
|
|
788 (put 'prog2 'lisp-indent-function 2)
|
|
|
789 (put 'save-excursion 'lisp-indent-function 0)
|
|
|
790 (put 'save-window-excursion 'lisp-indent-function 0)
|
|
|
791 (put 'save-selected-window 'lisp-indent-function 0)
|
|
442
|
792 (put 'with-selected-window 'lisp-indent-function 1)
|
|
428
|
793 (put 'save-selected-frame 'lisp-indent-function 0)
|
|
|
794 (put 'with-selected-frame 'lisp-indent-function 1)
|
|
|
795 (put 'save-restriction 'lisp-indent-function 0)
|
|
|
796 (put 'save-match-data 'lisp-indent-function 0)
|
|
|
797 (put 'let 'lisp-indent-function 1)
|
|
|
798 (put 'let* 'lisp-indent-function 1)
|
|
|
799 (put 'let-specifier 'lisp-indent-function 1)
|
|
442
|
800 (put 'flet 'lisp-indent-function 1)
|
|
428
|
801 (put 'while 'lisp-indent-function 1)
|
|
|
802 (put 'if 'lisp-indent-function 2)
|
|
|
803 (put 'catch 'lisp-indent-function 1)
|
|
|
804 (put 'condition-case 'lisp-indent-function 2)
|
|
|
805 (put 'call-with-condition-handler 'lisp-indent-function 2)
|
|
|
806 (put 'unwind-protect 'lisp-indent-function 1)
|
|
|
807 (put 'save-current-buffer 'lisp-indent-function 0)
|
|
|
808 (put 'with-current-buffer 'lisp-indent-function 1)
|
|
|
809 (put 'with-string-as-buffer-contents 'lisp-indent-function 1)
|
|
|
810 (put 'with-temp-file 'lisp-indent-function 1)
|
|
|
811 (put 'with-temp-buffer 'lisp-indent-function 0)
|
|
|
812 (put 'with-output-to-string 'lisp-indent-function 0)
|
|
|
813 (put 'with-output-to-temp-buffer 'lisp-indent-function 1)
|
|
|
814 (put 'eval-after-load 'lisp-indent-function 1)
|
|
|
815 (put 'display-message 'lisp-indent-function 1)
|
|
|
816 (put 'display-warning 'lisp-indent-function 1)
|
|
|
817 (put 'lmessage 'lisp-indent-function 2)
|
|
|
818 (put 'lwarn 'lisp-indent-function 2)
|
|
|
819 (put 'global-set-key 'lisp-indent-function 1)
|
|
|
820
|
|
|
821 (defun indent-sexp (&optional endpos)
|
|
|
822 "Indent each line of the list starting just after point.
|
|
|
823 If optional arg ENDPOS is given, indent each line, stopping when
|
|
|
824 ENDPOS is encountered."
|
|
|
825 (interactive)
|
|
|
826 (let ((indent-stack (list nil))
|
|
|
827 (next-depth 0)
|
|
|
828 ;; If ENDPOS is non-nil, use nil as STARTING-POINT
|
|
|
829 ;; so that calculate-lisp-indent will find the beginning of
|
|
|
830 ;; the defun we are in.
|
|
|
831 ;; If ENDPOS is nil, it is safe not to scan before point
|
|
|
832 ;; since every line we indent is more deeply nested than point is.
|
|
|
833 (starting-point (if endpos nil (point)))
|
|
|
834 (last-point (point))
|
|
|
835 last-depth bol outer-loop-done inner-loop-done state this-indent)
|
|
|
836 (or endpos
|
|
|
837 ;; Get error now if we don't have a complete sexp after point.
|
|
|
838 (save-excursion (forward-sexp 1)))
|
|
|
839 (save-excursion
|
|
|
840 (setq outer-loop-done nil)
|
|
|
841 (while (if endpos (< (point) endpos)
|
|
|
842 (not outer-loop-done))
|
|
|
843 (setq last-depth next-depth
|
|
|
844 inner-loop-done nil)
|
|
|
845 ;; Parse this line so we can learn the state
|
|
|
846 ;; to indent the next line.
|
|
|
847 ;; This inner loop goes through only once
|
|
|
848 ;; unless a line ends inside a string.
|
|
|
849 (while (and (not inner-loop-done)
|
|
|
850 (not (setq outer-loop-done (eobp))))
|
|
|
851 (setq state (parse-partial-sexp (point) (progn (end-of-line) (point))
|
|
|
852 nil nil state))
|
|
|
853 (setq next-depth (car state))
|
|
|
854 ;; If the line contains a comment other than the sort
|
|
|
855 ;; that is indented like code,
|
|
|
856 ;; indent it now with indent-for-comment.
|
|
|
857 ;; Comments indented like code are right already.
|
|
|
858 ;; In any case clear the in-comment flag in the state
|
|
|
859 ;; because parse-partial-sexp never sees the newlines.
|
|
|
860 (if (car (nthcdr 4 state))
|
|
|
861 (progn (indent-for-comment)
|
|
|
862 (end-of-line)
|
|
|
863 (setcar (nthcdr 4 state) nil)))
|
|
|
864 ;; If this line ends inside a string,
|
|
|
865 ;; go straight to next line, remaining within the inner loop,
|
|
|
866 ;; and turn off the \-flag.
|
|
|
867 (if (car (nthcdr 3 state))
|
|
|
868 (progn
|
|
|
869 (forward-line 1)
|
|
|
870 (setcar (nthcdr 5 state) nil))
|
|
|
871 (setq inner-loop-done t)))
|
|
|
872 (and endpos
|
|
|
873 (<= next-depth 0)
|
|
|
874 (progn
|
|
|
875 (setq indent-stack (append indent-stack
|
|
|
876 (make-list (- next-depth) nil))
|
|
|
877 last-depth (- last-depth next-depth)
|
|
|
878 next-depth 0)))
|
|
|
879 (or outer-loop-done endpos
|
|
|
880 (setq outer-loop-done (<= next-depth 0)))
|
|
|
881 (if outer-loop-done
|
|
|
882 (forward-line 1)
|
|
|
883 (while (> last-depth next-depth)
|
|
|
884 (setq indent-stack (cdr indent-stack)
|
|
|
885 last-depth (1- last-depth)))
|
|
|
886 (while (< last-depth next-depth)
|
|
|
887 (setq indent-stack (cons nil indent-stack)
|
|
|
888 last-depth (1+ last-depth)))
|
|
|
889 ;; Now go to the next line and indent it according
|
|
|
890 ;; to what we learned from parsing the previous one.
|
|
|
891 (forward-line 1)
|
|
|
892 (setq bol (point))
|
|
|
893 (skip-chars-forward " \t")
|
|
|
894 ;; But not if the line is blank, or just a comment
|
|
|
895 ;; (except for double-semi comments; indent them as usual).
|
|
|
896 (if (or (eobp) (looking-at "\\s<\\|\n"))
|
|
|
897 nil
|
|
|
898 (if (and (car indent-stack)
|
|
|
899 (>= (car indent-stack) 0))
|
|
|
900 (setq this-indent (car indent-stack))
|
|
|
901 (let ((val (calculate-lisp-indent
|
|
|
902 (if (car indent-stack) (- (car indent-stack))
|
|
|
903 starting-point))))
|
|
|
904 (if (integerp val)
|
|
|
905 (setcar indent-stack
|
|
|
906 (setq this-indent val))
|
|
|
907 (setcar indent-stack (- (car (cdr val))))
|
|
|
908 (setq this-indent (car val)))))
|
|
|
909 (if (/= (current-column) this-indent)
|
|
|
910 (progn (delete-region bol (point))
|
|
|
911 (indent-to this-indent)))))
|
|
|
912 (or outer-loop-done
|
|
|
913 (setq outer-loop-done (= (point) last-point))
|
|
|
914 (setq last-point (point)))))))
|
|
|
915
|
|
|
916 ;; Indent every line whose first char is between START and END inclusive.
|
|
|
917 (defun lisp-indent-region (start end)
|
|
|
918 (save-excursion
|
|
|
919 (let ((endmark (copy-marker end)))
|
|
|
920 (goto-char start)
|
|
|
921 (and (bolp) (not (eolp))
|
|
|
922 (lisp-indent-line))
|
|
|
923 (indent-sexp endmark)
|
|
|
924 (set-marker endmark nil))))
|
|
|
925
|
|
|
926 ;;;; Lisp paragraph filling commands.
|
|
|
927
|
|
|
928 (defun lisp-fill-paragraph (&optional justify)
|
|
|
929 "Like \\[fill-paragraph], but handle Emacs Lisp comments.
|
|
|
930 If any of the current line is a comment, fill the comment or the
|
|
|
931 paragraph of it that point is in, preserving the comment's indentation
|
|
|
932 and initial semicolons."
|
|
|
933 (interactive "P")
|
|
|
934 (let (
|
|
|
935 ;; Non-nil if the current line contains a comment.
|
|
|
936 has-comment
|
|
|
937
|
|
|
938 ;; Non-nil if the current line contains code and a comment.
|
|
|
939 has-code-and-comment
|
|
|
940
|
|
|
941 ;; If has-comment, the appropriate fill-prefix for the comment.
|
|
|
942 comment-fill-prefix
|
|
|
943 )
|
|
|
944
|
|
|
945 ;; Figure out what kind of comment we are looking at.
|
|
|
946 (save-excursion
|
|
|
947 (beginning-of-line)
|
|
|
948 (cond
|
|
|
949
|
|
|
950 ;; A line with nothing but a comment on it?
|
|
|
951 ((looking-at "[ \t]*;[; \t]*")
|
|
|
952 (setq has-comment t
|
|
|
953 comment-fill-prefix (buffer-substring (match-beginning 0)
|
|
|
954 (match-end 0))))
|
|
|
955
|
|
|
956 ;; A line with some code, followed by a comment? Remember that the
|
|
|
957 ;; semi which starts the comment shouldn't be part of a string or
|
|
|
958 ;; character.
|
|
|
959 ;; XEmacs Try this the FSF and see if it works.
|
|
|
960 ; ((progn
|
|
|
961 ; (while (not (looking-at ";\\|$"))
|
|
|
962 ; (skip-chars-forward "^;\n\"\\\\?")
|
|
|
963 ; (cond
|
|
|
964 ; ((eq (char-after (point)) ?\\) (forward-char 2))
|
|
|
965 ; ((memq (char-after (point)) '(?\" ??)) (forward-sexp 1))))
|
|
|
966 ; (looking-at ";+[\t ]*"))
|
|
|
967 ; (setq has-comment t)
|
|
|
968 ((condition-case nil
|
|
|
969 (save-restriction
|
|
|
970 (narrow-to-region (point-min)
|
|
|
971 (save-excursion (end-of-line) (point)))
|
|
|
972 (while (not (looking-at ";\\|$"))
|
|
|
973 (skip-chars-forward "^;\n\"\\\\?")
|
|
|
974 (cond
|
|
|
975 ((eq (char-after (point)) ?\\) (forward-char 2))
|
|
|
976 ((memq (char-after (point)) '(?\" ??)) (forward-sexp 1))))
|
|
|
977 (looking-at ";+[\t ]*"))
|
|
|
978 (error nil))
|
|
|
979 (setq has-comment t has-code-and-comment t)
|
|
|
980 (setq comment-fill-prefix
|
|
|
981 (concat (make-string (/ (current-column) 8) ?\t)
|
|
|
982 (make-string (% (current-column) 8) ?\ )
|
|
|
983 (buffer-substring (match-beginning 0) (match-end 0)))))))
|
|
|
984
|
|
|
985 (if (not has-comment)
|
|
|
986 (fill-paragraph justify)
|
|
|
987
|
|
|
988 ;; Narrow to include only the comment, and then fill the region.
|
|
|
989 (save-excursion
|
|
|
990 (save-restriction
|
|
|
991 (beginning-of-line)
|
|
|
992 (narrow-to-region
|
|
|
993 ;; Find the first line we should include in the region to fill.
|
|
|
994 (save-excursion
|
|
|
995 (while (and (zerop (forward-line -1))
|
|
|
996 (looking-at "^[ \t]*;")))
|
|
|
997 ;; We may have gone too far. Go forward again.
|
|
|
998 (or (looking-at ".*;")
|
|
|
999 (forward-line 1))
|
|
|
1000 (point))
|
|
|
1001 ;; Find the beginning of the first line past the region to fill.
|
|
|
1002 (save-excursion
|
|
|
1003 (while (progn (forward-line 1)
|
|
|
1004 (looking-at "^[ \t]*;")))
|
|
|
1005 (point)))
|
|
|
1006
|
|
|
1007 ;; Lines with only semicolons on them can be paragraph boundaries.
|
|
|
1008 (let* ((paragraph-start (concat paragraph-start "\\|[ \t;]*$"))
|
|
|
1009 (paragraph-separate (concat paragraph-start "\\|[ \t;]*$"))
|
|
|
1010 (paragraph-ignore-fill-prefix nil)
|
|
|
1011 (fill-prefix comment-fill-prefix)
|
|
|
1012 (after-line (if has-code-and-comment
|
|
|
1013 (save-excursion
|
|
|
1014 (forward-line 1) (point))))
|
|
|
1015 (end (progn
|
|
|
1016 (forward-paragraph)
|
|
|
1017 (or (bolp) (newline 1))
|
|
|
1018 (point)))
|
|
|
1019 ;; If this comment starts on a line with code,
|
|
|
1020 ;; include that like in the filling.
|
|
|
1021 (beg (progn (backward-paragraph)
|
|
|
1022 (if (eq (point) after-line)
|
|
|
1023 (forward-line -1))
|
|
|
1024 (point))))
|
|
|
1025 (fill-region-as-paragraph beg end
|
|
|
1026 justify nil
|
|
|
1027 (save-excursion
|
|
|
1028 (goto-char beg)
|
|
|
1029 (if (looking-at fill-prefix)
|
|
|
1030 nil
|
|
|
1031 (re-search-forward comment-start-skip)
|
|
|
1032 (point))))))))
|
|
|
1033 t))
|
|
|
1034
|
|
|
1035 (defun indent-code-rigidly (start end arg &optional nochange-regexp)
|
|
|
1036 "Indent all lines of code, starting in the region, sideways by ARG columns.
|
|
|
1037 Does not affect lines starting inside comments or strings, assuming that
|
|
|
1038 the start of the region is not inside them.
|
|
|
1039
|
|
|
1040 Called from a program, takes args START, END, COLUMNS and NOCHANGE-REGEXP.
|
|
|
1041 The last is a regexp which, if matched at the beginning of a line,
|
|
|
1042 means don't indent that line."
|
|
|
1043 (interactive "r\np")
|
|
|
1044 (let (state)
|
|
|
1045 (save-excursion
|
|
|
1046 (goto-char end)
|
|
|
1047 (setq end (point-marker))
|
|
|
1048 (goto-char start)
|
|
|
1049 (or (bolp)
|
|
|
1050 (setq state (parse-partial-sexp (point)
|
|
|
1051 (progn
|
|
|
1052 (forward-line 1) (point))
|
|
|
1053 nil nil state)))
|
|
|
1054 (while (< (point) end)
|
|
|
1055 (or (car (nthcdr 3 state))
|
|
|
1056 (and nochange-regexp
|
|
|
1057 (looking-at nochange-regexp))
|
|
|
1058 ;; If line does not start in string, indent it
|
|
|
1059 (let ((indent (current-indentation)))
|
|
|
1060 (delete-region (point) (progn (skip-chars-forward " \t") (point)))
|
|
|
1061 (or (eolp)
|
|
|
1062 (indent-to (max 0 (+ indent arg)) 0))))
|
|
|
1063 (setq state (parse-partial-sexp (point)
|
|
|
1064 (progn
|
|
|
1065 (forward-line 1) (point))
|
|
|
1066 nil nil state))))))
|
|
|
1067
|
|
|
1068 (provide 'lisp-mode)
|
|
|
1069
|
|
|
1070 ;;; lisp-mode.el ends here
|
