diff options
Diffstat (limited to 'doc/lispref/customize.texi')
| -rw-r--r-- | doc/lispref/customize.texi | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/doc/lispref/customize.texi b/doc/lispref/customize.texi index 308145def55..6015c134d21 100644 --- a/doc/lispref/customize.texi +++ b/doc/lispref/customize.texi @@ -378,8 +378,15 @@ the option as a Lisp variable); preferably, though, it should not modify its value argument destructively. The default for @var{setfunction} is @code{set-default-toplevel-value}. +If defined, @var{setfunction} will also be called when evaluating a +@code{defcustom} form with @kbd{C-M-x} in Emacs Lisp mode and when the +@var{option}'s value is changed via the @code{setopt} macro +(@pxref{Setting Variables, setopt}). + If you specify this keyword, the variable's documentation string -should describe how to do the same job in hand-written Lisp code. +should describe how to do the same job in hand-written Lisp code, +either by invoking @var{setfunction} directly or by using +@code{setopt}. @item :get @var{getfunction} @kindex get@r{, @code{defcustom} keyword} |