doc/lispref/hooks.texi

   1 @c -*-texinfo-*-
   2 @c This is part of the GNU Emacs Lisp Reference Manual.
   3 @c Copyright (C) 1990-1993, 1998, 2001-2012 Free Software Foundation, Inc.
   4 @c See the file elisp.texi for copying conditions.
   5 @node Standard Hooks
   6 @appendix Standard Hooks
   7 @cindex standard hooks
   8 @cindex hook variables, list of
   9
  10 The following is a list of some hook variables that let you provide
  11 functions to be called from within Emacs on suitable occasions.
  12
  13 Most of these variables have names ending with @samp{-hook}.  They are
  14 @dfn{normal hooks}, run by means of @code{run-hooks}.  The value of such
  15 a hook is a list of functions; the functions are called with no
  16 arguments and their values are completely ignored.  The recommended way
  17 to put a new function on such a hook is to call @code{add-hook}.
  18 @xref{Hooks}, for more information about using hooks.
  19
  20 The variables whose names end in @samp{-functions} are usually @dfn{abnormal
  21 hooks} (some old code may also use the deprecated @samp{-hooks} suffix); their
  22 values are lists of functions, but these functions are called in a special way
  23 (they are passed arguments, or their return values are used).  The variables
  24 whose names end in @samp{-function} have single functions as their values.
  25
  26 This is not an exhaustive list, it only covers the more general hooks.
  27 For example, every major mode defines a hook named
  28 @samp{@var{modename}-mode-hook}.  The major mode command runs this
  29 normal hook with @code{run-mode-hooks} as the very last thing it does.
  30 @xref{Mode Hooks}.  Most minor modes have mode hooks too.
  31
  32 A special feature allows you to specify expressions to evaluate if and
  33 when a file is loaded (@pxref{Hooks for Loading}).  That feature is
  34 not exactly a hook, but does a similar job.
  35
  36 @c We need to xref to where each hook is documented or else document it here.
  37 @c Add vindex for anything not indexed elsewhere.
  38 @c This list is in alphabetical order, grouped by topic.
  39 @c TODO It should probably be more thoroughly ordered by topic.
  40
  41 @table @code
  42 @item activate-mark-hook
  43 @itemx deactivate-mark-hook
  44 @xref{The Mark}.
  45
  46 @item after-change-functions
  47 @itemx before-change-functions
  48 @itemx first-change-hook
  49 @xref{Change Hooks}.
  50
  51 @item after-change-major-mode-hook
  52 @itemx change-major-mode-after-body-hook
  53 @xref{Mode Hooks}.
  54
  55 @item after-init-hook
  56 @itemx before-init-hook
  57 @itemx emacs-startup-hook
  58 @xref{Init File}.
  59
  60 @item after-insert-file-functions
  61 @itemx write-region-annotate-functions
  62 @itemx write-region-post-annotation-function
  63 @xref{Format Conversion}.
  64
  65 @item after-make-frame-functions
  66 @itemx before-make-frame-hook
  67 @xref{Creating Frames}.
  68
  69 @c Not general enough?
  70 @ignore
  71 @item after-revert-hook
  72 @itemx before-revert-hook
  73 @itemx buffer-stale-function
  74 @itemx revert-buffer-function
  75 @itemx revert-buffer-insert-file-contents-function
  76 @xref{Reverting}.
  77 @end ignore
  78
  79 @item after-save-hook
  80 @itemx before-save-hook
  81 @itemx write-contents-functions
  82 @itemx write-file-functions
  83 @xref{Saving Buffers}.
  84
  85 @item after-setting-font-hook
  86 @vindex after-setting-font-hook
  87 Hook run after a frame's font changes.
  88
  89 @item auto-save-hook
  90 @xref{Auto-Saving}.
  91
  92 @item before-hack-local-variables-hook
  93 @itemx hack-local-variables-hook
  94 @xref{File Local Variables}.
  95
  96 @item buffer-access-fontify-functions
  97 @xref{Lazy Properties}.
  98
  99 @item buffer-list-update-hook
 100 @vindex buffer-list-update-hook
 101 Hook run when the buffer list changes.
 102
 103 @item buffer-quit-function
 104 @vindex buffer-quit-function
 105 Function to call to ``quit'' the current buffer.
 106
 107 @item change-major-mode-hook
 108 @xref{Creating Buffer-Local}.
 109
 110 @item command-line-functions
 111 @xref{Command-Line Arguments}.
 112
 113 @item delayed-warnings-hook
 114 @vindex delayed-warnings-hook
 115 The command loop runs this soon after @code{post-command-hook} (q.v.).
 116
 117 @item delete-frame-functions
 118 @xref{Deleting Frames}.
 119
 120 @item delete-terminal-functions
 121 @xref{Multiple Terminals}.
 122
 123 @itemx pop-up-frame-function
 124 @itemx split-window-preferred-function
 125 @xref{Choosing Window Options}.
 126
 127 @item echo-area-clear-hook
 128 @xref{Echo Area Customization}.
 129
 130 @item find-file-hook
 131 @itemx find-file-not-found-functions
 132 @xref{Visiting Functions}.
 133
 134 @item font-lock-extend-after-change-region-function
 135 @xref{Region to Refontify}.
 136
 137 @item font-lock-extend-region-functions
 138 @xref{Multiline Font Lock}.
 139
 140 @item font-lock-fontify-buffer-function
 141 @itemx font-lock-fontify-region-function
 142 @itemx font-lock-mark-block-function
 143 @itemx font-lock-unfontify-buffer-function
 144 @itemx font-lock-unfontify-region-function
 145 @xref{Other Font Lock Variables}.
 146
 147 @item fontification-functions
 148 @xref{Auto Faces,, Automatic Face Assignment}.
 149
 150 @item frame-auto-hide-function
 151 @xref{Quitting Windows}.
 152
 153 @item kill-buffer-hook
 154 @itemx kill-buffer-query-functions
 155 @xref{Killing Buffers}.
 156
 157 @item kill-emacs-hook
 158 @itemx kill-emacs-query-functions
 159 @xref{Killing Emacs}.
 160
 161 @item menu-bar-update-hook
 162 @xref{Menu Bar}.
 163
 164 @item minibuffer-setup-hook
 165 @itemx minibuffer-exit-hook
 166 @xref{Minibuffer Misc}.
 167
 168 @item mouse-leave-buffer-hook
 169 @vindex mouse-leave-buffer-hook
 170 Hook run when about to switch windows with a mouse command.
 171
 172 @item mouse-position-function
 173 @xref{Mouse Position}.
 174
 175 @item post-command-hook
 176 @itemx pre-command-hook
 177 @xref{Command Overview}.
 178
 179 @item post-gc-hook
 180 @xref{Garbage Collection}.
 181
 182 @item post-self-insert-hook
 183 @xref{Keymaps and Minor Modes}.
 184
 185 @ignore
 186 @item prog-mode-hook
 187 @itemx special-mode-hook
 188 @vindex special-mode-hook
 189 @xref{Basic Major Modes}.
 190 @end ignore
 191
 192 @item suspend-hook
 193 @itemx suspend-resume-hook
 194 @itemx suspend-tty-functions
 195 @itemx resume-tty-functions
 196 @xref{Suspending Emacs}.
 197
 198 @item syntax-begin-function
 199 @itemx syntax-propertize-extend-region-functions
 200 @itemx syntax-propertize-function
 201 @itemx font-lock-syntactic-face-function
 202 @xref{Syntactic Font Lock}.  @xref{Syntax Properties}.
 203
 204 @item temp-buffer-setup-hook
 205 @itemx temp-buffer-show-function
 206 @itemx temp-buffer-show-hook
 207 @xref{Temporary Displays}.
 208
 209 @item term-setup-hook
 210 @xref{Terminal-Specific}.
 211
 212 @item window-configuration-change-hook
 213 @itemx window-scroll-functions
 214 @itemx window-size-change-functions
 215 @xref{Window Hooks}.
 216
 217 @item window-setup-hook
 218 @xref{Window Systems}.
 219
 220 @item window-text-change-functions
 221 @vindex window-text-change-functions
 222 Functions to call in redisplay when text in the window might change.
 223
 224 @end table
 225
 226 @ignore
 227 Some -hook, -function, -functions from preloaded Lisp or C files that
 228 I thought did not need to be mentioned here:
 229
 230 Lisp:
 231 after-load-functions
 232 auto-coding-functions
 233 choose-completion-string-functions
 234 completing-read-function
 235 completion-annotate-function
 236 completion-at-point-functions
 237 completion-in-region-functions
 238 completion-list-insert-choice-function
 239 deactivate-current-input-method-function
 240 describe-current-input-method-function
 241 filter-buffer-substring-functions
 242 font-lock-function
 243 menu-bar-select-buffer-function
 244 read-file-name-function
 245 replace-re-search-function
 246 replace-search-function
 247 yank-undo-function
 248
 249 C hooks:
 250 kbd-macro-termination-hook
 251 signal-hook-function
 252
 253 C functions:
 254 redisplay-end-trigger-functions
 255 x-lost-selection-functions
 256 x-sent-selection-functions
 257
 258 C function:
 259 auto-composition-function
 260 auto-fill-function
 261 command-error-function
 262 compose-chars-after-function
 263 composition-function-table
 264 deferred-action-function
 265 input-method-function
 266 load-read-function
 267 load-source-file-function
 268 read-buffer-function
 269 ring-bell-function
 270 select-safe-coding-system-function
 271 set-auto-coding-function
 272 show-help-function
 273 signal-hook-function
 274 undo-outer-limit-function
 275
 276 @end ignore