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(Minibuffer History): Document add-to-history.

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Eli Zaretskii 2006-05-06 07:53:25 +00:00
parent 41f7a85e0d
commit 321eb4b29a
1 changed files with 17 additions and 1 deletions
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18
lispref/minibuf.texi
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@ -449,11 +449,27 @@ list, put the length in the @code{history-length} property of the
history list symbol. The variable @code{history-delete-duplicates}
specifies whether to delete duplicates in history.
@defun add-to-history history-var newelt &optional maxelt keep-dups
This function adds a new element @var{newelt} to the history list
stored in the variable @var{history-var}, and returns the updated
history list. By default, the list length is limited by the value
specified by @code{history-length} (described below), but the optional
argument @var{maxelt} overrides that. The possible values of
@var{maxelt} have the same meaning as the values of
@code{history-length}.
Duplicate members are removed from the history list, unless
@code{history-delete-duplicates} is @code{nil} or the second optional
argument of this function @var{keep-dups} is non-@code{nil}.
@end defun
@defvar history-length
The value of this variable specifies the maximum length for all
history lists that don't specify their own maximum lengths. If the
value is @code{t}, that means there no maximum (don't delete old
elements).
elements). The value of @code{history-length} property of the history
list variable's symbol, if set, overrides this variable for that
particular history list.
@end defvar
@defvar history-delete-duplicates