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428
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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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4 ;; Copyright (C) 1995 Tinker Systems
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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 ;; July/05/97 slb Converted to use easymenu.
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36
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37 ;;; Code:
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38
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39 (defgroup lisp nil
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40 "Lisp support, including Emacs Lisp."
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41 :group 'languages
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42 :group 'development)
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43
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44 (defvar lisp-mode-syntax-table nil)
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45 (defvar emacs-lisp-mode-syntax-table nil)
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46 (defvar lisp-mode-abbrev-table nil)
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47
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48 ;; XEmacs change
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49 (defvar lisp-interaction-mode-popup-menu nil)
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50 (defvar lisp-interaction-mode-popup-menu-1
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51 (purecopy '("Lisp-Interaction"
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52 ["Evaluate Last S-expression" eval-last-sexp]
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53 ["Evaluate Entire Buffer" eval-current-buffer]
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54 ["Evaluate Region" eval-region
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55 :active (region-exists-p)]
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56 "---"
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57 ["Evaluate This Defun" eval-defun]
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58 ;; FSF says "Instrument Function for Debugging"
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59 ["Debug This Defun" edebug-defun]
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60 "---"
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61 ["Trace a Function" trace-function-background]
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62 ["Untrace All Functions" untrace-all
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63 :active (fboundp 'untrace-all)]
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64 "---"
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65 ["Comment Out Region" comment-region
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66 :active (region-exists-p)]
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67 ["Indent Region" indent-region
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68 :active (region-exists-p)]
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69 ["Indent Line" lisp-indent-line]
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70 "---"
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71 ["Debug On Error" (setq debug-on-error (not debug-on-error))
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72 :style toggle :selected debug-on-error]
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73 ["Debug On Quit" (setq debug-on-quit (not debug-on-quit))
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74 :style toggle :selected debug-on-quit]
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75 ["Debug on Signal" (setq debug-on-signal (not debug-on-signal))
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76 :style toggle :selected debug-on-signal]
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77 )))
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78
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79 (defvar emacs-lisp-mode-popup-menu nil)
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80 (defvar emacs-lisp-mode-popup-menu-1
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81 (purecopy
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82 (nconc
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83 '("Emacs-Lisp"
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84 ["Byte-compile This File" emacs-lisp-byte-compile]
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85 ["Byte-compile/load This" emacs-lisp-byte-compile-and-load]
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86 ["Byte-recompile Directory..." byte-recompile-directory]
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87 "---")
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88 (cdr lisp-interaction-mode-popup-menu-1))))
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89
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90 ;Don't have a menubar entry in Lisp Interaction mode. Otherwise, the
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91 ;*scratch* buffer has a Lisp menubar item! Very confusing.
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92 ;(defvar lisp-interaction-mode-menubar-menu
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93 ; (purecopy (cons "Lisp" (cdr lisp-interaction-mode-popup-menu))))
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94
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95 (defvar emacs-lisp-mode-menubar-menu nil)
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96 (defvar emacs-lisp-mode-menubar-menu-1
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97 (purecopy (cons "Lisp" (cdr emacs-lisp-mode-popup-menu-1))))
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98
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99 (if (not emacs-lisp-mode-syntax-table)
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100 (let ((i 0))
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101 (setq emacs-lisp-mode-syntax-table (make-syntax-table))
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102 (while (< i ?0)
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103 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
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104 (setq i (1+ i)))
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105 (setq i (1+ ?9))
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106 (while (< i ?A)
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107 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
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108 (setq i (1+ i)))
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109 (setq i (1+ ?Z))
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110 (while (< i ?a)
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111 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
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112 (setq i (1+ i)))
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113 (setq i (1+ ?z))
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114 (while (< i 128)
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115 (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
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116 (setq i (1+ i)))
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117 (modify-syntax-entry ? " " emacs-lisp-mode-syntax-table)
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118 (modify-syntax-entry ?\t " " emacs-lisp-mode-syntax-table)
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119 (modify-syntax-entry ?\f " " emacs-lisp-mode-syntax-table)
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120 (modify-syntax-entry ?\n "> " emacs-lisp-mode-syntax-table)
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121 ;; Give CR the same syntax as newline, for selective-display.
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122 (modify-syntax-entry ?\^m "> " emacs-lisp-mode-syntax-table)
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123 (modify-syntax-entry ?\; "< " emacs-lisp-mode-syntax-table)
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124 (modify-syntax-entry ?` "' " emacs-lisp-mode-syntax-table)
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125 (modify-syntax-entry ?' "' " emacs-lisp-mode-syntax-table)
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126 (modify-syntax-entry ?, "' " emacs-lisp-mode-syntax-table)
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127 ;; Used to be singlequote; changed for flonums.
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128 (modify-syntax-entry ?. "_ " emacs-lisp-mode-syntax-table)
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129 (modify-syntax-entry ?# "' " emacs-lisp-mode-syntax-table)
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130 (modify-syntax-entry ?\" "\" " emacs-lisp-mode-syntax-table)
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131 (modify-syntax-entry ?\\ "\\ " emacs-lisp-mode-syntax-table)
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132 (modify-syntax-entry ?\( "() " emacs-lisp-mode-syntax-table)
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133 (modify-syntax-entry ?\) ")( " emacs-lisp-mode-syntax-table)
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134 (modify-syntax-entry ?\[ "(] " emacs-lisp-mode-syntax-table)
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135 (modify-syntax-entry ?\] ")[ " emacs-lisp-mode-syntax-table)))
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136
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137 (if (not lisp-mode-syntax-table)
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138 (progn (setq lisp-mode-syntax-table
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139 (copy-syntax-table emacs-lisp-mode-syntax-table))
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140 (modify-syntax-entry ?\| "\" " lisp-mode-syntax-table)
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141 (modify-syntax-entry ?\[ "_ " lisp-mode-syntax-table)
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142 ;; XEmacs changes
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143 (modify-syntax-entry ?\] "_ " lisp-mode-syntax-table)
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144 ;;
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145 ;; If emacs was compiled with NEW_SYNTAX, then do
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146 ;; CL's #| |# block comments.
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147 (if (= 8 (length (parse-partial-sexp (point) (point))))
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148 (progn
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149 (modify-syntax-entry ?# "' 58" lisp-mode-syntax-table)
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150 (modify-syntax-entry ?| ". 67" lisp-mode-syntax-table))
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151 ;; else, old style
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152 (modify-syntax-entry ?\| "\" " lisp-mode-syntax-table))))
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153
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154 (define-abbrev-table 'lisp-mode-abbrev-table ())
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155
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156 (defvar lisp-imenu-generic-expression
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157 '(
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158 (nil
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159 "^\\s-*(def\\(un\\|subst\\|macro\\|advice\\)\\s-+\\([-A-Za-z0-9+*|:]+\\)" 2)
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160 ("Variables"
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161 "^\\s-*(def\\(var\\|const\\|custom\\)\\s-+\\([-A-Za-z0-9+*|:]+\\)" 2)
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162 ("Types"
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163 "^\\s-*(def\\(group\\|type\\|struct\\|class\\|ine-condition\\)\\s-+\\([-A-Za-z0-9+*|:]+\\)"
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164 2))
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165
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166 "Imenu generic expression for Lisp mode. See `imenu-generic-expression'.")
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167
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168 (defun lisp-mode-variables (lisp-syntax)
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169 (cond (lisp-syntax
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170 (set-syntax-table lisp-mode-syntax-table)))
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171 (setq local-abbrev-table lisp-mode-abbrev-table)
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172 (make-local-variable 'paragraph-start)
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173 (setq paragraph-start (concat page-delimiter "\\|$" ))
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174 (make-local-variable 'paragraph-separate)
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175 (setq paragraph-separate paragraph-start)
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176 (make-local-variable 'paragraph-ignore-fill-prefix)
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177 (setq paragraph-ignore-fill-prefix t)
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178 (make-local-variable 'fill-paragraph-function)
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179 (setq fill-paragraph-function 'lisp-fill-paragraph)
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180 ;; Adaptive fill mode gets in the way of auto-fill,
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181 ;; and should make no difference for explicit fill
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182 ;; because lisp-fill-paragraph should do the job.
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183 (make-local-variable 'adaptive-fill-mode)
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184 (setq adaptive-fill-mode nil)
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185 (make-local-variable 'indent-line-function)
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186 (setq indent-line-function 'lisp-indent-line)
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187 (make-local-variable 'indent-region-function)
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188 (setq indent-region-function 'lisp-indent-region)
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189 (make-local-variable 'parse-sexp-ignore-comments)
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190 (setq parse-sexp-ignore-comments t)
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191 (make-local-variable 'outline-regexp)
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192 (setq outline-regexp ";;; \\|(....")
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193 (make-local-variable 'comment-start)
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194 (setq comment-start ";")
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195 ;; XEmacs change
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196 (set (make-local-variable 'block-comment-start) ";;")
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197 (make-local-variable 'comment-start-skip)
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198 ;; Look within the line for a ; following an even number of backslashes
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199 ;; after either a non-backslash or the line beginning.
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200 (setq comment-start-skip "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+ *")
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201 (make-local-variable 'comment-column)
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202 (setq comment-column 40)
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203 (make-local-variable 'comment-indent-function)
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204 (setq comment-indent-function 'lisp-comment-indent)
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205 ;; XEmacs change
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206 (set (make-local-variable 'dabbrev-case-fold-search) nil)
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207 (set (make-local-variable 'dabbrev-case-replace) nil)
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208 (make-local-variable 'imenu-generic-expression)
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209 (setq imenu-generic-expression lisp-imenu-generic-expression))
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210
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211 (defvar shared-lisp-mode-map ()
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212 "Keymap for commands shared by all sorts of Lisp modes.")
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213
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214 (if shared-lisp-mode-map
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215 ()
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216 (setq shared-lisp-mode-map (make-sparse-keymap))
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217 ;; XEmacs changes
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218 (set-keymap-name shared-lisp-mode-map 'shared-lisp-mode-map)
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219 (define-key shared-lisp-mode-map "\M-;" 'lisp-indent-for-comment)
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220 (define-key shared-lisp-mode-map "\e\C-q" 'indent-sexp))
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221
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222 (defvar emacs-lisp-mode-map ()
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223 "Keymap for Emacs Lisp mode.
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224 All commands in `shared-lisp-mode-map' are inherited by this map.")
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225
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226 (if emacs-lisp-mode-map
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227 ()
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228 ;; XEmacs: Ignore FSF nconc stuff
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229 (setq emacs-lisp-mode-map (make-sparse-keymap))
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230 (set-keymap-name emacs-lisp-mode-map 'emacs-lisp-mode-map)
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231 (set-keymap-parents emacs-lisp-mode-map (list shared-lisp-mode-map))
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232 (define-key emacs-lisp-mode-map "\e\t" 'lisp-complete-symbol)
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233 (define-key emacs-lisp-mode-map "\e\C-x" 'eval-defun)
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234 ;; XEmacs: Not sure what the FSF menu bindings are. I hope XEmacs
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235 ;; doesn't need them.
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236 )
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237
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238 (defun emacs-lisp-byte-compile ()
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239 "Byte compile the file containing the current buffer."
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240 (interactive)
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241 (if buffer-file-name
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242 ;; XEmacs change. Force buffer save first
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243 (progn
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244 (save-buffer)
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245 (byte-compile-file buffer-file-name))
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246 (error "The buffer must be saved in a file first.")))
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247
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248 (defun emacs-lisp-byte-compile-and-load ()
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249 "Byte-compile the current file (if it has changed), then load compiled code."
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250 (interactive)
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251 (or buffer-file-name
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252 (error "The buffer must be saved in a file first"))
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253 (require 'bytecomp)
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254 ;; Recompile if file or buffer has changed since last compilation.
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255 (if (and (buffer-modified-p)
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256 (y-or-n-p (format "save buffer %s first? " (buffer-name))))
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257 (save-buffer))
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258 (let ((compiled-file-name (byte-compile-dest-file buffer-file-name)))
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259 (if (file-newer-than-file-p compiled-file-name buffer-file-name)
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260 (load-file compiled-file-name)
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261 (byte-compile-file buffer-file-name t))))
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262
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263 (defun emacs-lisp-mode ()
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264 "Major mode for editing Lisp code to run in Emacs.
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265 Commands:
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266 Delete converts tabs to spaces as it moves back.
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267 Blank lines separate paragraphs. Semicolons start comments.
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268 \\{emacs-lisp-mode-map}
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269 Entry to this mode calls the value of `emacs-lisp-mode-hook'
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270 if that value is non-nil."
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271 (interactive)
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272 (kill-all-local-variables)
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273 (use-local-map emacs-lisp-mode-map)
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274 (set-syntax-table emacs-lisp-mode-syntax-table)
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275 ;; XEmacs changes
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276 (setq major-mode 'emacs-lisp-mode
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277 ;; mode-popup-menu emacs-lisp-mode-popup-menu
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278 mode-name "Emacs-Lisp")
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279 ;; (if (and (featurep 'menubar)
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280 ;; current-menubar)
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281 ;; (progn
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282 ;; make a local copy of the menubar, so our modes don't
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283 ;; change the global menubar
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284 ;; (set-buffer-menubar current-menubar)
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285 ;; (add-submenu nil emacs-lisp-mode-menubar-menu)))
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286 (unless emacs-lisp-mode-popup-menu
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287 (easy-menu-define emacs-lisp-mode-popup-menu emacs-lisp-mode-map ""
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288 emacs-lisp-mode-popup-menu-1))
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289 (easy-menu-add emacs-lisp-mode-popup-menu)
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290 (lisp-mode-variables nil)
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291 (run-hooks 'emacs-lisp-mode-hook))
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292
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430
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293 (put 'emacs-lisp-mode 'font-lock-lisp-like t)
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294
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428
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295 (defvar lisp-mode-map ()
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296 "Keymap for ordinary Lisp mode.
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297 All commands in `shared-lisp-mode-map' are inherited by this map.")
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298
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299 (if lisp-mode-map
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300 ()
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301 ;; XEmacs changes
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302 (setq lisp-mode-map (make-sparse-keymap))
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303 (set-keymap-name lisp-mode-map 'lisp-mode-map)
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304 (set-keymap-parents lisp-mode-map (list shared-lisp-mode-map))
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305 (define-key lisp-mode-map "\e\C-x" 'lisp-send-defun)
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306 ;; gag, no. use ilisp. -jwz
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307 ;; (define-key lisp-mode-map "\C-c\C-z" 'run-lisp)
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308 )
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309
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310 (defun lisp-mode ()
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311 "Major mode for editing Lisp code for Lisps other than GNU Emacs Lisp.
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312 Commands:
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313 Delete converts tabs to spaces as it moves back.
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314 Blank lines separate paragraphs. Semicolons start comments.
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315 \\{lisp-mode-map}
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316 Note that `run-lisp' may be used either to start an inferior Lisp job
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317 or to switch back to an existing one.
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318
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319 Entry to this mode calls the value of `lisp-mode-hook'
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320 if that value is non-nil."
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321 (interactive)
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322 (kill-all-local-variables)
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323 (use-local-map lisp-mode-map)
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324 (setq major-mode 'lisp-mode)
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325 (setq mode-name "Lisp")
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326 (lisp-mode-variables t)
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327 (set-syntax-table lisp-mode-syntax-table)
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328 (run-hooks 'lisp-mode-hook))
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329
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330 ;; This will do unless shell.el is loaded.
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331 ;; XEmacs change
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332 (defun lisp-send-defun ()
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333 "Send the current defun to the Lisp process made by \\[run-lisp]."
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334 (interactive)
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335 (error "Process lisp does not exist"))
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336
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337 ;; XEmacs change: emacs-lisp-mode-map is a more appropriate parent.
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338 (defvar lisp-interaction-mode-map ()
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339 "Keymap for Lisp Interaction mode.
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340 All commands in `shared-lisp-mode-map' are inherited by this map.")
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341
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342 (if lisp-interaction-mode-map
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343 ()
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344 ;; XEmacs set keymap our way
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345 (setq lisp-interaction-mode-map (make-sparse-keymap))
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346 (set-keymap-name lisp-interaction-mode-map 'lisp-interaction-mode-map)
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347 (set-keymap-parents lisp-interaction-mode-map (list emacs-lisp-mode-map))
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348 (define-key lisp-interaction-mode-map "\e\C-x" 'eval-defun)
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349 (define-key lisp-interaction-mode-map "\e\t" 'lisp-complete-symbol)
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350 (define-key lisp-interaction-mode-map "\n" 'eval-print-last-sexp))
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351
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352 (defun lisp-interaction-mode ()
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353 "Major mode for typing and evaluating Lisp forms.
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354 Like Lisp mode except that \\[eval-print-last-sexp] evals the Lisp expression
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355 before point, and prints its value into the buffer, advancing point.
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356
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357 Commands:
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358 Delete converts tabs to spaces as it moves back.
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359 Paragraphs are separated only by blank lines.
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360 Semicolons start comments.
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361 \\{lisp-interaction-mode-map}
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362 Entry to this mode calls the value of `lisp-interaction-mode-hook'
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363 if that value is non-nil."
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364 (interactive)
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365 (kill-all-local-variables)
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366 (use-local-map lisp-interaction-mode-map)
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367 (setq major-mode 'lisp-interaction-mode)
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368 (setq mode-name "Lisp Interaction")
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369 ;; XEmacs change
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370 ;; (setq mode-popup-menu lisp-interaction-mode-popup-menu)
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371 (unless lisp-interaction-mode-popup-menu
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372 (easy-menu-define lisp-interaction-mode-popup-menu
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373 lisp-interaction-mode-map
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374 ""
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375 lisp-interaction-mode-popup-menu-1))
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376 (easy-menu-add lisp-interaction-mode-popup-menu)
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377
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378 (set-syntax-table emacs-lisp-mode-syntax-table)
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379 (lisp-mode-variables nil)
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380 (run-hooks 'lisp-interaction-mode-hook))
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381
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382 (defun eval-print-last-sexp ()
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383 "Evaluate sexp before point; print value into current buffer."
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384 (interactive)
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385 (let ((standard-output (current-buffer)))
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386 (terpri)
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387 (eval-last-sexp t)
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388 (terpri)))
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389
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390 ;; XEmacs change
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391 (defcustom eval-interactive-verbose t
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392 "*Non-nil means that interactive evaluation can print messages.
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393 The messages are printed when the expression is treated differently
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394 using `\\[eval-last-sexp]' and `\\[eval-defun]' than it than it would have been
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395 treated noninteractively.
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396
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397 The printed messages are \"defvar treated as defconst\" and \"defcustom
|
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398 evaluation forced\". See `eval-interactive' for more details."
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399 :type 'boolean
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400 :group 'lisp)
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401
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402 (defun eval-interactive (expr)
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403 "Like `eval' except that it transforms defvars to defconsts.
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404 The evaluation of defcustom forms is forced."
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405 (cond ((and (eq (car-safe expr) 'defvar)
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406 (> (length expr) 2))
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407 (eval (cons 'defconst (cdr expr)))
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408 (when eval-interactive-verbose
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409 (message "defvar treated as defconst")
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410 (sit-for 1)
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411 (message ""))
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412 (nth 1 expr))
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413 ((and (eq (car-safe expr) 'defcustom)
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414 (> (length expr) 2)
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415 (default-boundp (nth 1 expr)))
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416 ;; Force variable to be bound
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417 ;; #### defcustom might specify a different :set method.
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418 (set-default (nth 1 expr) (eval (nth 2 expr)))
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419 ;; And evaluate the defcustom
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420 (eval expr)
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421 (when eval-interactive-verbose
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422 (message "defcustom evaluation forced")
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423 (sit-for 1)
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424 (message ""))
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425 (nth 1 expr))
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426 (t
|
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|
427 (eval expr))))
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428
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429 ;; XEmacs change, based on Bob Weiner suggestion
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430 (defun eval-last-sexp (eval-last-sexp-arg-internal) ;dynamic scoping wonderment
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|
431 "Evaluate sexp before point; print value in minibuffer.
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432 With argument, print output into current buffer."
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433 (interactive "P")
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434 (let ((standard-output (if eval-last-sexp-arg-internal (current-buffer) t))
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|
435 (opoint (point))
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436 ignore-quotes)
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|
437 (prin1 (eval-interactive
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|
438 (letf (((syntax-table) emacs-lisp-mode-syntax-table))
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439 (save-excursion
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440 ;; If this sexp appears to be enclosed in `...' then
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|
|
441 ;; ignore the surrounding quotes.
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|
442 (setq ignore-quotes (or (eq (char-after) ?\')
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443 (eq (char-before) ?\')))
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444 (forward-sexp -1)
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445 ;; vladimir@cs.ualberta.ca 30-Jul-1997: skip ` in
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|
446 ;; `variable' so that the value is returned, not the
|
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447 ;; name.
|
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|
448 (if (and ignore-quotes
|
|
|
449 (eq (char-after) ?\`))
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|
450 (forward-char))
|
|
|
451 (save-restriction
|
|
|
452 (narrow-to-region (point-min) opoint)
|
|
|
453 (let ((expr (read (current-buffer))))
|
|
|
454 (if (eq (car-safe expr) 'interactive)
|
|
|
455 ;; If it's an (interactive ...) form, it's
|
|
|
456 ;; more useful to show how an interactive call
|
|
|
457 ;; would use it.
|
|
|
458 `(call-interactively
|
|
|
459 (lambda (&rest args)
|
|
|
460 ,expr args))
|
|
|
461 expr)))))))))
|
|
|
462
|
|
|
463 (defun eval-defun (eval-defun-arg-internal)
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|
|
464 "Evaluate defun that point is in or before.
|
|
|
465 Print value in minibuffer.
|
|
|
466 With argument, insert value in current buffer after the defun."
|
|
|
467 (interactive "P")
|
|
|
468 (let ((standard-output (if eval-defun-arg-internal (current-buffer) t)))
|
|
|
469 (prin1 (eval-interactive (save-excursion
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|
|
470 (end-of-defun)
|
|
|
471 (beginning-of-defun)
|
|
|
472 (read (current-buffer)))))))
|
|
|
473
|
|
|
474
|
|
|
475 (defun lisp-comment-indent ()
|
|
|
476 (if (looking-at "\\s<\\s<\\s<")
|
|
|
477 (current-column)
|
|
|
478 (if (looking-at "\\s<\\s<")
|
|
|
479 ;; #### FSF has:
|
|
|
480 ;; (let ((tem (or (calculate-lisp-indent) (current-column)))) ...
|
|
|
481 (let ((tem (calculate-lisp-indent)))
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|
|
482 (if (listp tem) (car tem) tem))
|
|
|
483 (skip-chars-backward " \t")
|
|
|
484 (max (if (bolp) 0 (1+ (current-column)))
|
|
|
485 comment-column))))
|
|
|
486
|
|
|
487 ;; XEmacs change
|
|
|
488 (defun lisp-indent-for-comment ()
|
|
|
489 "Indent this line's comment appropriately, or insert an empty comment.
|
|
|
490 If adding a new comment on a blank line, use `block-comment-start' instead
|
|
|
491 of `comment-start' to open the comment."
|
|
|
492 ;; by Stig@hackvan.com
|
|
|
493 ;; #### - This functionality, the recognition of block-comment-{start,end},
|
|
|
494 ;; will perhaps be standardized across modes and move to indent-for-comment.
|
|
|
495 (interactive)
|
|
|
496 (if (and block-comment-start
|
|
|
497 (save-excursion (beginning-of-line) (looking-at "^[ \t]*$")))
|
|
|
498 (insert block-comment-start))
|
|
|
499 (indent-for-comment))
|
|
|
500
|
|
|
501 (defvar lisp-indent-offset nil)
|
|
|
502 (defvar lisp-indent-function 'lisp-indent-function)
|
|
|
503
|
|
|
504 (defun lisp-indent-line (&optional whole-exp)
|
|
|
505 "Indent current line as Lisp code.
|
|
|
506 With argument, indent any additional lines of the same expression
|
|
|
507 rigidly along with this one."
|
|
|
508 (interactive "P")
|
|
|
509 (let ((indent (calculate-lisp-indent)) shift-amt beg end
|
|
|
510 (pos (- (point-max) (point))))
|
|
|
511 (beginning-of-line)
|
|
|
512 (setq beg (point))
|
|
|
513 (skip-chars-forward " \t")
|
|
|
514 (if (looking-at "\\s<\\s<\\s<")
|
|
|
515 ;; Don't alter indentation of a ;;; comment line.
|
|
|
516 (goto-char (- (point-max) pos))
|
|
|
517 (if (and (looking-at "\\s<") (not (looking-at "\\s<\\s<")))
|
|
|
518 ;; Single-semicolon comment lines should be indented
|
|
|
519 ;; as comment lines, not as code.
|
|
|
520 (progn (indent-for-comment) (forward-char -1))
|
|
|
521 (if (listp indent) (setq indent (car indent)))
|
|
|
522 (setq shift-amt (- indent (current-column)))
|
|
|
523 (if (zerop shift-amt)
|
|
|
524 nil
|
|
|
525 (delete-region beg (point))
|
|
|
526 (indent-to indent)))
|
|
|
527 ;; If initial point was within line's indentation,
|
|
|
528 ;; position after the indentation. Else stay at same point in text.
|
|
|
529 (if (> (- (point-max) pos) (point))
|
|
|
530 (goto-char (- (point-max) pos)))
|
|
|
531 ;; If desired, shift remaining lines of expression the same amount.
|
|
|
532 (and whole-exp (not (zerop shift-amt))
|
|
|
533 (save-excursion
|
|
|
534 (goto-char beg)
|
|
|
535 (forward-sexp 1)
|
|
|
536 (setq end (point))
|
|
|
537 (goto-char beg)
|
|
|
538 (forward-line 1)
|
|
|
539 (setq beg (point))
|
|
|
540 (> end beg))
|
|
|
541 (indent-code-rigidly beg end shift-amt)))))
|
|
|
542
|
|
|
543 (defvar calculate-lisp-indent-last-sexp)
|
|
|
544
|
|
|
545 (defun calculate-lisp-indent (&optional parse-start)
|
|
|
546 "Return appropriate indentation for current line as Lisp code.
|
|
|
547 In usual case returns an integer: the column to indent to.
|
|
|
548 Can instead return a list, whose car is the column to indent to.
|
|
|
549 This means that following lines at the same level of indentation
|
|
|
550 should not necessarily be indented the same way.
|
|
|
551 The second element of the list is the buffer position
|
|
|
552 of the start of the containing expression."
|
|
|
553 (save-excursion
|
|
|
554 (beginning-of-line)
|
|
|
555 (let ((indent-point (point))
|
|
|
556 ;; XEmacs change (remove paren-depth)
|
|
|
557 state ;;paren-depth
|
|
|
558 ;; setting this to a number inhibits calling hook
|
|
|
559 (desired-indent nil)
|
|
|
560 (retry t)
|
|
|
561 calculate-lisp-indent-last-sexp containing-sexp)
|
|
|
562 (if parse-start
|
|
|
563 (goto-char parse-start)
|
|
|
564 (beginning-of-defun))
|
|
|
565 ;; Find outermost containing sexp
|
|
|
566 (while (< (point) indent-point)
|
|
|
567 (setq state (parse-partial-sexp (point) indent-point 0)))
|
|
|
568 ;; Find innermost containing sexp
|
|
|
569 (while (and retry
|
|
|
570 state
|
|
|
571 ;; XEmacs change (remove paren-depth)
|
|
|
572 (> ;;(setq paren-depth (elt state 0))
|
|
|
573 (elt state 0)
|
|
|
574 0))
|
|
|
575 (setq retry nil)
|
|
|
576 (setq calculate-lisp-indent-last-sexp (elt state 2))
|
|
|
577 (setq containing-sexp (elt state 1))
|
|
|
578 ;; Position following last unclosed open.
|
|
|
579 (goto-char (1+ containing-sexp))
|
|
|
580 ;; Is there a complete sexp since then?
|
|
|
581 (if (and calculate-lisp-indent-last-sexp
|
|
|
582 (> calculate-lisp-indent-last-sexp (point)))
|
|
|
583 ;; Yes, but is there a containing sexp after that?
|
|
|
584 (let ((peek (parse-partial-sexp calculate-lisp-indent-last-sexp
|
|
|
585 indent-point 0)))
|
|
|
586 (if (setq retry (car (cdr peek))) (setq state peek)))))
|
|
|
587 (if retry
|
|
|
588 nil
|
|
|
589 ;; Innermost containing sexp found
|
|
|
590 (goto-char (1+ containing-sexp))
|
|
|
591 (if (not calculate-lisp-indent-last-sexp)
|
|
|
592 ;; indent-point immediately follows open paren.
|
|
|
593 ;; Don't call hook.
|
|
|
594 (setq desired-indent (current-column))
|
|
|
595 ;; Find the start of first element of containing sexp.
|
|
|
596 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
|
|
|
597 (cond ((looking-at "\\s(")
|
|
|
598 ;; First element of containing sexp is a list.
|
|
|
599 ;; Indent under that list.
|
|
|
600 )
|
|
|
601 ((> (save-excursion (forward-line 1) (point))
|
|
|
602 calculate-lisp-indent-last-sexp)
|
|
|
603 ;; This is the first line to start within the containing sexp.
|
|
|
604 ;; It's almost certainly a function call.
|
|
|
605 (if (= (point) calculate-lisp-indent-last-sexp)
|
|
|
606 ;; Containing sexp has nothing before this line
|
|
|
607 ;; except the first element. Indent under that element.
|
|
|
608 nil
|
|
|
609 ;; Skip the first element, find start of second (the first
|
|
|
610 ;; argument of the function call) and indent under.
|
|
|
611 (progn (forward-sexp 1)
|
|
|
612 (parse-partial-sexp (point)
|
|
|
613 calculate-lisp-indent-last-sexp
|
|
|
614 0 t)))
|
|
|
615 (backward-prefix-chars))
|
|
|
616 (t
|
|
|
617 ;; Indent beneath first sexp on same line as
|
|
|
618 ;; calculate-lisp-indent-last-sexp. Again, it's
|
|
|
619 ;; almost certainly a function call.
|
|
|
620 (goto-char calculate-lisp-indent-last-sexp)
|
|
|
621 (beginning-of-line)
|
|
|
622 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp
|
|
|
623 0 t)
|
|
|
624 (backward-prefix-chars)))))
|
|
|
625 ;; Point is at the point to indent under unless we are inside a string.
|
|
|
626 ;; Call indentation hook except when overridden by lisp-indent-offset
|
|
|
627 ;; or if the desired indentation has already been computed.
|
|
|
628 (let ((normal-indent (current-column)))
|
|
|
629 (cond ((elt state 3)
|
|
|
630 ;; Inside a string, don't change indentation.
|
|
|
631 (goto-char indent-point)
|
|
|
632 (skip-chars-forward " \t")
|
|
|
633 (current-column))
|
|
|
634 (desired-indent)
|
|
|
635 ((and (boundp 'lisp-indent-function)
|
|
|
636 lisp-indent-function
|
|
|
637 (not retry))
|
|
|
638 (or (funcall lisp-indent-function indent-point state)
|
|
|
639 normal-indent))
|
|
|
640 ;; XEmacs change:
|
|
|
641 ;; lisp-indent-offset shouldn't override lisp-indent-function !
|
|
|
642 ((and (integerp lisp-indent-offset) containing-sexp)
|
|
|
643 ;; Indent by constant offset
|
|
|
644 (goto-char containing-sexp)
|
|
|
645 (+ normal-indent lisp-indent-offset))
|
|
|
646 (t
|
|
|
647 normal-indent))))))
|
|
|
648
|
|
|
649 (defun lisp-indent-function (indent-point state)
|
|
|
650 ;; free reference to `calculate-lisp-indent-last-sexp'
|
|
|
651 ;; in #'calculate-lisp-indent
|
|
|
652 (let ((normal-indent (current-column)))
|
|
|
653 (goto-char (1+ (elt state 1)))
|
|
|
654 (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
|
|
|
655 (if (and (elt state 2)
|
|
|
656 (not (looking-at "\\sw\\|\\s_")))
|
|
|
657 ;; car of form doesn't seem to be a a symbol
|
|
|
658 (progn
|
|
|
659 (if (not (> (save-excursion (forward-line 1) (point))
|
|
|
660 calculate-lisp-indent-last-sexp))
|
|
|
661 (progn (goto-char calculate-lisp-indent-last-sexp)
|
|
|
662 (beginning-of-line)
|
|
|
663 (parse-partial-sexp (point)
|
|
|
664 calculate-lisp-indent-last-sexp 0 t)))
|
|
|
665 ;; Indent under the list or under the first sexp on the same
|
|
|
666 ;; line as calculate-lisp-indent-last-sexp. Note that first
|
|
|
667 ;; thing on that line has to be complete sexp since we are
|
|
|
668 ;; inside the innermost containing sexp.
|
|
|
669 (backward-prefix-chars)
|
|
|
670 (current-column))
|
|
|
671 (let ((function (buffer-substring (point)
|
|
|
672 (progn (forward-sexp 1) (point))))
|
|
|
673 method)
|
|
|
674 (setq method (or (get (intern-soft function) 'lisp-indent-function)
|
|
|
675 (get (intern-soft function) 'lisp-indent-hook)))
|
|
|
676 (cond ((or (eq method 'defun)
|
|
|
677 (and (null method)
|
|
|
678 (> (length function) 3)
|
|
|
679 (string-match "\\`def" function)))
|
|
|
680 (lisp-indent-defform state indent-point))
|
|
|
681 ((integerp method)
|
|
|
682 (lisp-indent-specform method state
|
|
|
683 indent-point normal-indent))
|
|
|
684 (method
|
|
|
685 (funcall method state indent-point)))))))
|
|
|
686
|
|
|
687 (defvar lisp-body-indent 2
|
|
|
688 "Number of columns to indent the second line of a `(def...)' form.")
|
|
|
689
|
|
|
690 (defun lisp-indent-specform (count state indent-point normal-indent)
|
|
|
691 (let ((containing-form-start (elt state 1))
|
|
|
692 (i count)
|
|
|
693 body-indent containing-form-column)
|
|
|
694 ;; Move to the start of containing form, calculate indentation
|
|
|
695 ;; to use for non-distinguished forms (> count), and move past the
|
|
|
696 ;; function symbol. lisp-indent-function guarantees that there is at
|
|
|
697 ;; least one word or symbol character following open paren of containing
|
|
|
698 ;; form.
|
|
|
699 (goto-char containing-form-start)
|
|
|
700 (setq containing-form-column (current-column))
|
|
|
701 (setq body-indent (+ lisp-body-indent containing-form-column))
|
|
|
702 (forward-char 1)
|
|
|
703 (forward-sexp 1)
|
|
|
704 ;; Now find the start of the last form.
|
|
|
705 (parse-partial-sexp (point) indent-point 1 t)
|
|
|
706 (while (and (< (point) indent-point)
|
|
|
707 (condition-case ()
|
|
|
708 (progn
|
|
|
709 (setq count (1- count))
|
|
|
710 (forward-sexp 1)
|
|
|
711 (parse-partial-sexp (point) indent-point 1 t))
|
|
|
712 (error nil))))
|
|
|
713 ;; Point is sitting on first character of last (or count) sexp.
|
|
|
714 (if (> count 0)
|
|
|
715 ;; A distinguished form. If it is the first or second form use double
|
|
|
716 ;; lisp-body-indent, else normal indent. With lisp-body-indent bound
|
|
|
717 ;; to 2 (the default), this just happens to work the same with if as
|
|
|
718 ;; the older code, but it makes unwind-protect, condition-case,
|
|
|
719 ;; with-output-to-temp-buffer, et. al. much more tasteful. The older,
|
|
|
720 ;; less hacked, behavior can be obtained by replacing below with
|
|
|
721 ;; (list normal-indent containing-form-start).
|
|
|
722 (if (<= (- i count) 1)
|
|
|
723 (list (+ containing-form-column (* 2 lisp-body-indent))
|
|
|
724 containing-form-start)
|
|
|
725 (list normal-indent containing-form-start))
|
|
|
726 ;; A non-distinguished form. Use body-indent if there are no
|
|
|
727 ;; distinguished forms and this is the first undistinguished form,
|
|
|
728 ;; or if this is the first undistinguished form and the preceding
|
|
|
729 ;; distinguished form has indentation at least as great as body-indent.
|
|
|
730 (if (or (and (= i 0) (= count 0))
|
|
|
731 (and (= count 0) (<= body-indent normal-indent)))
|
|
|
732 body-indent
|
|
|
733 normal-indent))))
|
|
|
734
|
|
|
735 (defun lisp-indent-defform (state indent-point)
|
|
|
736 (goto-char (car (cdr state)))
|
|
|
737 (forward-line 1)
|
|
|
738 (if (> (point) (car (cdr (cdr state))))
|
|
|
739 (progn
|
|
|
740 (goto-char (car (cdr state)))
|
|
|
741 (+ lisp-body-indent (current-column)))))
|
|
|
742
|
|
|
743
|
|
|
744 ;; (put 'progn 'lisp-indent-function 0), say, causes progn to be indented
|
|
|
745 ;; like defun if the first form is placed on the next line, otherwise
|
|
|
746 ;; it is indented like any other form (i.e. forms line up under first).
|
|
|
747
|
|
|
748 (put 'lambda 'lisp-indent-function 'defun)
|
|
|
749 (put 'autoload 'lisp-indent-function 'defun)
|
|
|
750 (put 'progn 'lisp-indent-function 0)
|
|
|
751 (put 'prog1 'lisp-indent-function 1)
|
|
|
752 (put 'prog2 'lisp-indent-function 2)
|
|
|
753 (put 'save-excursion 'lisp-indent-function 0)
|
|
|
754 (put 'save-window-excursion 'lisp-indent-function 0)
|
|
|
755 (put 'save-selected-window 'lisp-indent-function 0)
|
|
|
756 (put 'save-selected-frame 'lisp-indent-function 0)
|
|
|
757 (put 'with-selected-frame 'lisp-indent-function 1)
|
|
|
758 (put 'save-restriction 'lisp-indent-function 0)
|
|
|
759 (put 'save-match-data 'lisp-indent-function 0)
|
|
|
760 (put 'let 'lisp-indent-function 1)
|
|
|
761 (put 'let* 'lisp-indent-function 1)
|
|
|
762 (put 'let-specifier 'lisp-indent-function 1)
|
|
|
763 (put 'while 'lisp-indent-function 1)
|
|
|
764 (put 'if 'lisp-indent-function 2)
|
|
|
765 (put 'catch 'lisp-indent-function 1)
|
|
|
766 (put 'condition-case 'lisp-indent-function 2)
|
|
|
767 (put 'call-with-condition-handler 'lisp-indent-function 2)
|
|
|
768 (put 'unwind-protect 'lisp-indent-function 1)
|
|
|
769 (put 'save-current-buffer 'lisp-indent-function 0)
|
|
|
770 (put 'with-current-buffer 'lisp-indent-function 1)
|
|
|
771 (put 'with-string-as-buffer-contents 'lisp-indent-function 1)
|
|
|
772 (put 'with-temp-file 'lisp-indent-function 1)
|
|
|
773 (put 'with-temp-buffer 'lisp-indent-function 0)
|
|
|
774 (put 'with-output-to-string 'lisp-indent-function 0)
|
|
|
775 (put 'with-output-to-temp-buffer 'lisp-indent-function 1)
|
|
|
776 (put 'eval-after-load 'lisp-indent-function 1)
|
|
|
777 (put 'display-message 'lisp-indent-function 1)
|
|
|
778 (put 'display-warning 'lisp-indent-function 1)
|
|
|
779 (put 'lmessage 'lisp-indent-function 2)
|
|
|
780 (put 'lwarn 'lisp-indent-function 2)
|
|
|
781 (put 'global-set-key 'lisp-indent-function 1)
|
|
|
782
|
|
|
783 (defun indent-sexp (&optional endpos)
|
|
|
784 "Indent each line of the list starting just after point.
|
|
|
785 If optional arg ENDPOS is given, indent each line, stopping when
|
|
|
786 ENDPOS is encountered."
|
|
|
787 (interactive)
|
|
|
788 (let ((indent-stack (list nil))
|
|
|
789 (next-depth 0)
|
|
|
790 ;; If ENDPOS is non-nil, use nil as STARTING-POINT
|
|
|
791 ;; so that calculate-lisp-indent will find the beginning of
|
|
|
792 ;; the defun we are in.
|
|
|
793 ;; If ENDPOS is nil, it is safe not to scan before point
|
|
|
794 ;; since every line we indent is more deeply nested than point is.
|
|
|
795 (starting-point (if endpos nil (point)))
|
|
|
796 (last-point (point))
|
|
|
797 last-depth bol outer-loop-done inner-loop-done state this-indent)
|
|
|
798 (or endpos
|
|
|
799 ;; Get error now if we don't have a complete sexp after point.
|
|
|
800 (save-excursion (forward-sexp 1)))
|
|
|
801 (save-excursion
|
|
|
802 (setq outer-loop-done nil)
|
|
|
803 (while (if endpos (< (point) endpos)
|
|
|
804 (not outer-loop-done))
|
|
|
805 (setq last-depth next-depth
|
|
|
806 inner-loop-done nil)
|
|
|
807 ;; Parse this line so we can learn the state
|
|
|
808 ;; to indent the next line.
|
|
|
809 ;; This inner loop goes through only once
|
|
|
810 ;; unless a line ends inside a string.
|
|
|
811 (while (and (not inner-loop-done)
|
|
|
812 (not (setq outer-loop-done (eobp))))
|
|
|
813 (setq state (parse-partial-sexp (point) (progn (end-of-line) (point))
|
|
|
814 nil nil state))
|
|
|
815 (setq next-depth (car state))
|
|
|
816 ;; If the line contains a comment other than the sort
|
|
|
817 ;; that is indented like code,
|
|
|
818 ;; indent it now with indent-for-comment.
|
|
|
819 ;; Comments indented like code are right already.
|
|
|
820 ;; In any case clear the in-comment flag in the state
|
|
|
821 ;; because parse-partial-sexp never sees the newlines.
|
|
|
822 (if (car (nthcdr 4 state))
|
|
|
823 (progn (indent-for-comment)
|
|
|
824 (end-of-line)
|
|
|
825 (setcar (nthcdr 4 state) nil)))
|
|
|
826 ;; If this line ends inside a string,
|
|
|
827 ;; go straight to next line, remaining within the inner loop,
|
|
|
828 ;; and turn off the \-flag.
|
|
|
829 (if (car (nthcdr 3 state))
|
|
|
830 (progn
|
|
|
831 (forward-line 1)
|
|
|
832 (setcar (nthcdr 5 state) nil))
|
|
|
833 (setq inner-loop-done t)))
|
|
|
834 (and endpos
|
|
|
835 (<= next-depth 0)
|
|
|
836 (progn
|
|
|
837 (setq indent-stack (append indent-stack
|
|
|
838 (make-list (- next-depth) nil))
|
|
|
839 last-depth (- last-depth next-depth)
|
|
|
840 next-depth 0)))
|
|
|
841 (or outer-loop-done endpos
|
|
|
842 (setq outer-loop-done (<= next-depth 0)))
|
|
|
843 (if outer-loop-done
|
|
|
844 (forward-line 1)
|
|
|
845 (while (> last-depth next-depth)
|
|
|
846 (setq indent-stack (cdr indent-stack)
|
|
|
847 last-depth (1- last-depth)))
|
|
|
848 (while (< last-depth next-depth)
|
|
|
849 (setq indent-stack (cons nil indent-stack)
|
|
|
850 last-depth (1+ last-depth)))
|
|
|
851 ;; Now go to the next line and indent it according
|
|
|
852 ;; to what we learned from parsing the previous one.
|
|
|
853 (forward-line 1)
|
|
|
854 (setq bol (point))
|
|
|
855 (skip-chars-forward " \t")
|
|
|
856 ;; But not if the line is blank, or just a comment
|
|
|
857 ;; (except for double-semi comments; indent them as usual).
|
|
|
858 (if (or (eobp) (looking-at "\\s<\\|\n"))
|
|
|
859 nil
|
|
|
860 (if (and (car indent-stack)
|
|
|
861 (>= (car indent-stack) 0))
|
|
|
862 (setq this-indent (car indent-stack))
|
|
|
863 (let ((val (calculate-lisp-indent
|
|
|
864 (if (car indent-stack) (- (car indent-stack))
|
|
|
865 starting-point))))
|
|
|
866 (if (integerp val)
|
|
|
867 (setcar indent-stack
|
|
|
868 (setq this-indent val))
|
|
|
869 (setcar indent-stack (- (car (cdr val))))
|
|
|
870 (setq this-indent (car val)))))
|
|
|
871 (if (/= (current-column) this-indent)
|
|
|
872 (progn (delete-region bol (point))
|
|
|
873 (indent-to this-indent)))))
|
|
|
874 (or outer-loop-done
|
|
|
875 (setq outer-loop-done (= (point) last-point))
|
|
|
876 (setq last-point (point)))))))
|
|
|
877
|
|
|
878 ;; Indent every line whose first char is between START and END inclusive.
|
|
|
879 (defun lisp-indent-region (start end)
|
|
|
880 (save-excursion
|
|
|
881 (let ((endmark (copy-marker end)))
|
|
|
882 (goto-char start)
|
|
|
883 (and (bolp) (not (eolp))
|
|
|
884 (lisp-indent-line))
|
|
|
885 (indent-sexp endmark)
|
|
|
886 (set-marker endmark nil))))
|
|
|
887
|
|
|
888 ;;;; Lisp paragraph filling commands.
|
|
|
889
|
|
|
890 (defun lisp-fill-paragraph (&optional justify)
|
|
|
891 "Like \\[fill-paragraph], but handle Emacs Lisp comments.
|
|
|
892 If any of the current line is a comment, fill the comment or the
|
|
|
893 paragraph of it that point is in, preserving the comment's indentation
|
|
|
894 and initial semicolons."
|
|
|
895 (interactive "P")
|
|
|
896 (let (
|
|
|
897 ;; Non-nil if the current line contains a comment.
|
|
|
898 has-comment
|
|
|
899
|
|
|
900 ;; Non-nil if the current line contains code and a comment.
|
|
|
901 has-code-and-comment
|
|
|
902
|
|
|
903 ;; If has-comment, the appropriate fill-prefix for the comment.
|
|
|
904 comment-fill-prefix
|
|
|
905 )
|
|
|
906
|
|
|
907 ;; Figure out what kind of comment we are looking at.
|
|
|
908 (save-excursion
|
|
|
909 (beginning-of-line)
|
|
|
910 (cond
|
|
|
911
|
|
|
912 ;; A line with nothing but a comment on it?
|
|
|
913 ((looking-at "[ \t]*;[; \t]*")
|
|
|
914 (setq has-comment t
|
|
|
915 comment-fill-prefix (buffer-substring (match-beginning 0)
|
|
|
916 (match-end 0))))
|
|
|
917
|
|
|
918 ;; A line with some code, followed by a comment? Remember that the
|
|
|
919 ;; semi which starts the comment shouldn't be part of a string or
|
|
|
920 ;; character.
|
|
|
921 ;; XEmacs Try this the FSF and see if it works.
|
|
|
922 ; ((progn
|
|
|
923 ; (while (not (looking-at ";\\|$"))
|
|
|
924 ; (skip-chars-forward "^;\n\"\\\\?")
|
|
|
925 ; (cond
|
|
|
926 ; ((eq (char-after (point)) ?\\) (forward-char 2))
|
|
|
927 ; ((memq (char-after (point)) '(?\" ??)) (forward-sexp 1))))
|
|
|
928 ; (looking-at ";+[\t ]*"))
|
|
|
929 ; (setq has-comment t)
|
|
|
930 ((condition-case nil
|
|
|
931 (save-restriction
|
|
|
932 (narrow-to-region (point-min)
|
|
|
933 (save-excursion (end-of-line) (point)))
|
|
|
934 (while (not (looking-at ";\\|$"))
|
|
|
935 (skip-chars-forward "^;\n\"\\\\?")
|
|
|
936 (cond
|
|
|
937 ((eq (char-after (point)) ?\\) (forward-char 2))
|
|
|
938 ((memq (char-after (point)) '(?\" ??)) (forward-sexp 1))))
|
|
|
939 (looking-at ";+[\t ]*"))
|
|
|
940 (error nil))
|
|
|
941 (setq has-comment t has-code-and-comment t)
|
|
|
942 (setq comment-fill-prefix
|
|
|
943 (concat (make-string (/ (current-column) 8) ?\t)
|
|
|
944 (make-string (% (current-column) 8) ?\ )
|
|
|
945 (buffer-substring (match-beginning 0) (match-end 0)))))))
|
|
|
946
|
|
|
947 (if (not has-comment)
|
|
|
948 (fill-paragraph justify)
|
|
|
949
|
|
|
950 ;; Narrow to include only the comment, and then fill the region.
|
|
|
951 (save-excursion
|
|
|
952 (save-restriction
|
|
|
953 (beginning-of-line)
|
|
|
954 (narrow-to-region
|
|
|
955 ;; Find the first line we should include in the region to fill.
|
|
|
956 (save-excursion
|
|
|
957 (while (and (zerop (forward-line -1))
|
|
|
958 (looking-at "^[ \t]*;")))
|
|
|
959 ;; We may have gone too far. Go forward again.
|
|
|
960 (or (looking-at ".*;")
|
|
|
961 (forward-line 1))
|
|
|
962 (point))
|
|
|
963 ;; Find the beginning of the first line past the region to fill.
|
|
|
964 (save-excursion
|
|
|
965 (while (progn (forward-line 1)
|
|
|
966 (looking-at "^[ \t]*;")))
|
|
|
967 (point)))
|
|
|
968
|
|
|
969 ;; Lines with only semicolons on them can be paragraph boundaries.
|
|
|
970 (let* ((paragraph-start (concat paragraph-start "\\|[ \t;]*$"))
|
|
|
971 (paragraph-separate (concat paragraph-start "\\|[ \t;]*$"))
|
|
|
972 (paragraph-ignore-fill-prefix nil)
|
|
|
973 (fill-prefix comment-fill-prefix)
|
|
|
974 (after-line (if has-code-and-comment
|
|
|
975 (save-excursion
|
|
|
976 (forward-line 1) (point))))
|
|
|
977 (end (progn
|
|
|
978 (forward-paragraph)
|
|
|
979 (or (bolp) (newline 1))
|
|
|
980 (point)))
|
|
|
981 ;; If this comment starts on a line with code,
|
|
|
982 ;; include that like in the filling.
|
|
|
983 (beg (progn (backward-paragraph)
|
|
|
984 (if (eq (point) after-line)
|
|
|
985 (forward-line -1))
|
|
|
986 (point))))
|
|
|
987 (fill-region-as-paragraph beg end
|
|
|
988 justify nil
|
|
|
989 (save-excursion
|
|
|
990 (goto-char beg)
|
|
|
991 (if (looking-at fill-prefix)
|
|
|
992 nil
|
|
|
993 (re-search-forward comment-start-skip)
|
|
|
994 (point))))))))
|
|
|
995 t))
|
|
|
996
|
|
|
997 (defun indent-code-rigidly (start end arg &optional nochange-regexp)
|
|
|
998 "Indent all lines of code, starting in the region, sideways by ARG columns.
|
|
|
999 Does not affect lines starting inside comments or strings, assuming that
|
|
|
1000 the start of the region is not inside them.
|
|
|
1001
|
|
|
1002 Called from a program, takes args START, END, COLUMNS and NOCHANGE-REGEXP.
|
|
|
1003 The last is a regexp which, if matched at the beginning of a line,
|
|
|
1004 means don't indent that line."
|
|
|
1005 (interactive "r\np")
|
|
|
1006 (let (state)
|
|
|
1007 (save-excursion
|
|
|
1008 (goto-char end)
|
|
|
1009 (setq end (point-marker))
|
|
|
1010 (goto-char start)
|
|
|
1011 (or (bolp)
|
|
|
1012 (setq state (parse-partial-sexp (point)
|
|
|
1013 (progn
|
|
|
1014 (forward-line 1) (point))
|
|
|
1015 nil nil state)))
|
|
|
1016 (while (< (point) end)
|
|
|
1017 (or (car (nthcdr 3 state))
|
|
|
1018 (and nochange-regexp
|
|
|
1019 (looking-at nochange-regexp))
|
|
|
1020 ;; If line does not start in string, indent it
|
|
|
1021 (let ((indent (current-indentation)))
|
|
|
1022 (delete-region (point) (progn (skip-chars-forward " \t") (point)))
|
|
|
1023 (or (eolp)
|
|
|
1024 (indent-to (max 0 (+ indent arg)) 0))))
|
|
|
1025 (setq state (parse-partial-sexp (point)
|
|
|
1026 (progn
|
|
|
1027 (forward-line 1) (point))
|
|
|
1028 nil nil state))))))
|
|
|
1029
|
|
|
1030 (provide 'lisp-mode)
|
|
|
1031
|
|
|
1032 ;;; lisp-mode.el ends here
|
