-@node File Local Variables
-@section File Local Variables
-
- This section describes the functions and variables that affect
-processing of local variables lists in files. @xref{File variables, ,
-Local Variables in Files, emacs, The GNU Emacs Manual}, for basic
-information about file local variables.
-
-@defopt enable-local-variables
-This variable controls whether to process file local variables lists. A
-value of @code{t} means process the local variables lists
-unconditionally; @code{nil} means ignore them; anything else means ask
-the user what to do for each file. The default value is @code{t}.
-@end defopt
-
-@defun hack-local-variables &optional mode-only
-This function parses, and binds or evaluates as appropriate, any local
-variables specified by the contents of the current buffer. The variable
-@code{enable-local-variables} has its effect here. However, this
-function does not look for the @samp{mode:} local variable in the
-@w{@samp{-*-}} line. @code{set-auto-mode} does that, also taking
-@code{enable-local-variables} into account.
-
-If the optional argument @var{mode-only} is non-@code{nil}, then all
-this function does is return @code{t} if the @w{@samp{-*-}} line
-specifies a mode and @code{nil} otherwise. It does not set the mode
-nor any other file local variable. It does not check whether a mode
-is specified in the local variables list at the end of the file.
-@end defun
-
- If a file local variable list could specify a function that would
-be called later, or an expression that would be executed later, simply
-visiting a file could take over your Emacs. To prevent this, Emacs
-takes care not to allow local variable lists to set such variables.
-
- For one thing, any variable whose name ends in @samp{-command},
-@samp{-frame-alist}, @samp{-function}, @samp{-functions},
-@samp{-hook}, @samp{-hooks}, @samp{-form}, @samp{-forms}, @samp{-map},
-@samp{-map-alist}, @samp{-mode-alist}, @samp{-program}, or
-@samp{-predicate} cannot be set in a local variable list. In general,
-you should use such a name whenever it is appropriate for the
-variable's meaning. The variables @samp{font-lock-keywords},
-@samp{font-lock-keywords-[0-9]}, and
-@samp{font-lock-syntactic-keywords} cannot be set in a local variable
-list, either. These rules can be overridden by giving the variable's
-name a non-@code{nil} @code{safe-local-variable} property. If one
-gives it a @code{safe-local-variable} property of @code{t}, then one
-can give the variable any file local value. One can also give any
-symbol, including the above, a @code{safe-local-variable} property
-that is a function taking exactly one argument. In that case, giving
-a variable with that name a file local value is only allowed if the
-function returns non-@code{nil} when called with that value as
-argument.
-
- In addition, any variable whose name has a non-@code{nil}
-@code{risky-local-variable} property is also ignored. So are all
-variables listed in @code{ignored-local-variables}:
-
-@defvar ignored-local-variables
-This variable holds a list of variables that should not be
-set by a file's local variables list. Any value specified
-for one of these variables is ignored.
-@end defvar
-
-@defun risky-local-variable-p sym &optional val
-If @var{val} is non-@code{nil}, returns non-@code{nil} if giving
-@var{sym} a file local value of @var{val} would be risky, for any of
-the reasons stated above. If @var{val} is @code{nil} or omitted, only
-returns @code{nil} if @var{sym} can be safely assigned any file local
-value whatsoever.
-@end defun
-
- The @samp{Eval:} ``variable'' is also a potential loophole, so Emacs
-normally asks for confirmation before handling it.
-
-@defopt enable-local-eval
-This variable controls processing of @samp{Eval:} in local variables
-lists in files being visited. A value of @code{t} means process them
-unconditionally; @code{nil} means ignore them; anything else means ask
-the user what to do for each file. The default value is @code{maybe}.
-@end defopt
-
- Text properties are also potential loopholes, since their values
-could include functions to call. So Emacs discards all text
-properties from string values specified in a file's local variables
-list.
-