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, 2001-2014 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 @itemx window-setup-hook
  59 @xref{Init File}.
  60
  61 @item after-insert-file-functions
  62 @itemx write-region-annotate-functions
  63 @itemx write-region-post-annotation-function
  64 @xref{Format Conversion}.
  65
  66 @item after-make-frame-functions
  67 @itemx before-make-frame-hook
  68 @xref{Creating Frames}.
  69
  70 @c Not general enough?
  71 @ignore
  72 @item after-revert-hook
  73 @itemx before-revert-hook
  74 @itemx buffer-stale-function
  75 @itemx revert-buffer-function
  76 @itemx revert-buffer-insert-file-contents-function
  77 @xref{Reverting}.
  78 @end ignore
  79
  80 @item after-save-hook
  81 @itemx before-save-hook
  82 @itemx write-contents-functions
  83 @itemx write-file-functions
  84 @xref{Saving Buffers}.
  85
  86 @item after-setting-font-hook
  87 @vindex after-setting-font-hook
  88 Hook run after a frame's font changes.
  89
  90 @item auto-save-hook
  91 @xref{Auto-Saving}.
  92
  93 @item before-hack-local-variables-hook
  94 @itemx hack-local-variables-hook
  95 @xref{File Local Variables}.
  96
  97 @item buffer-access-fontify-functions
  98 @xref{Lazy Properties}.
  99
 100 @item buffer-list-update-hook
 101 @vindex buffer-list-update-hook
 102 Hook run when the buffer list changes (@pxref{Buffer List}).
 103
 104 @item buffer-quit-function
 105 @vindex buffer-quit-function
 106 Function to call to ``quit'' the current buffer.
 107
 108 @item change-major-mode-hook
 109 @xref{Creating Buffer-Local}.
 110
 111 @item command-line-functions
 112 @xref{Command-Line Arguments}.
 113
 114 @item delayed-warnings-hook
 115 @vindex delayed-warnings-hook
 116 The command loop runs this soon after @code{post-command-hook} (q.v.).
 117
 118 @item focus-in-hook
 119 @vindex focus-in-hook
 120 @itemx focus-out-hook
 121 @vindex focus-out-hook
 122 @xref{Input Focus}.
 123
 124 @item delete-frame-functions
 125 @xref{Deleting Frames}.
 126
 127 @item delete-terminal-functions
 128 @xref{Multiple Terminals}.
 129
 130 @item pop-up-frame-function
 131 @itemx split-window-preferred-function
 132 @xref{Choosing Window Options}.
 133
 134 @item echo-area-clear-hook
 135 @xref{Echo Area Customization}.
 136
 137 @item find-file-hook
 138 @itemx find-file-not-found-functions
 139 @xref{Visiting Functions}.
 140
 141 @item font-lock-extend-after-change-region-function
 142 @xref{Region to Refontify}.
 143
 144 @item font-lock-extend-region-functions
 145 @xref{Multiline Font Lock}.
 146
 147 @item font-lock-fontify-buffer-function
 148 @itemx font-lock-fontify-region-function
 149 @itemx font-lock-mark-block-function
 150 @itemx font-lock-unfontify-buffer-function
 151 @itemx font-lock-unfontify-region-function
 152 @xref{Other Font Lock Variables}.
 153
 154 @item fontification-functions
 155 @xref{Auto Faces,, Automatic Face Assignment}.
 156
 157 @item frame-auto-hide-function
 158 @xref{Quitting Windows}.
 159
 160 @item kill-buffer-hook
 161 @itemx kill-buffer-query-functions
 162 @xref{Killing Buffers}.
 163
 164 @item kill-emacs-hook
 165 @itemx kill-emacs-query-functions
 166 @xref{Killing Emacs}.
 167
 168 @item menu-bar-update-hook
 169 @xref{Menu Bar}.
 170
 171 @item minibuffer-setup-hook
 172 @itemx minibuffer-exit-hook
 173 @xref{Minibuffer Misc}.
 174
 175 @item mouse-leave-buffer-hook
 176 @vindex mouse-leave-buffer-hook
 177 Hook run when about to switch windows with a mouse command.
 178
 179 @item mouse-position-function
 180 @xref{Mouse Position}.
 181
 182 @item post-command-hook
 183 @itemx pre-command-hook
 184 @xref{Command Overview}.
 185
 186 @item post-gc-hook
 187 @xref{Garbage Collection}.
 188
 189 @item post-self-insert-hook
 190 @xref{Keymaps and Minor Modes}.
 191
 192 @ignore
 193 @item prog-mode-hook
 194 @itemx special-mode-hook
 195 @vindex special-mode-hook
 196 @xref{Basic Major Modes}.
 197 @end ignore
 198
 199 @item suspend-hook
 200 @itemx suspend-resume-hook
 201 @itemx suspend-tty-functions
 202 @itemx resume-tty-functions
 203 @xref{Suspending Emacs}.
 204
 205 @item syntax-begin-function
 206 @itemx syntax-propertize-extend-region-functions
 207 @itemx syntax-propertize-function
 208 @itemx font-lock-syntactic-face-function
 209 @xref{Syntactic Font Lock}.  @xref{Syntax Properties}.
 210
 211 @item temp-buffer-setup-hook
 212 @itemx temp-buffer-show-function
 213 @itemx temp-buffer-show-hook
 214 @xref{Temporary Displays}.
 215
 216 @item tty-setup-hook
 217 @xref{Terminal-Specific}.
 218
 219 @item window-configuration-change-hook
 220 @itemx window-scroll-functions
 221 @itemx window-size-change-functions
 222 @xref{Window Hooks}.
 223
 224 @item window-text-change-functions
 225 @vindex window-text-change-functions
 226 Functions to call in redisplay when text in the window might change.
 227
 228 @end table
 229
 230 @ignore
 231 Some -hook, -function, -functions from preloaded Lisp or C files that
 232 I thought did not need to be mentioned here:
 233
 234 Lisp:
 235 after-load-functions
 236 auto-coding-functions
 237 choose-completion-string-functions
 238 completing-read-function
 239 completion-annotate-function
 240 completion-at-point-functions
 241 completion-list-insert-choice-function
 242 deactivate-current-input-method-function
 243 describe-current-input-method-function
 244 font-lock-function
 245 menu-bar-select-buffer-function
 246 read-file-name-function
 247 replace-re-search-function
 248 replace-search-function
 249 yank-undo-function
 250
 251 C hooks:
 252 kbd-macro-termination-hook
 253 signal-hook-function
 254
 255 C functions:
 256 redisplay-end-trigger-functions
 257 x-lost-selection-functions
 258 x-sent-selection-functions
 259
 260 C function:
 261 auto-composition-function
 262 auto-fill-function
 263 command-error-function
 264 compose-chars-after-function
 265 composition-function-table
 266 deferred-action-function
 267 input-method-function
 268 load-read-function
 269 load-source-file-function
 270 read-buffer-function
 271 ring-bell-function
 272 select-safe-coding-system-function
 273 set-auto-coding-function
 274 show-help-function
 275 signal-hook-function
 276 undo-outer-limit-function
 277
 278 @end ignore