diff options
author | Richard M. Stallman <[email protected]> | 2006-05-17 22:23:17 +0000 |
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committer | Richard M. Stallman <[email protected]> | 2006-05-17 22:23:17 +0000 |
commit | e410360421363eff50dafe5397b26af0e1b42a2c (patch) | |
tree | 3d286bcb94adc03884f47cde1fd51e37e3b9c1e4 /lispref/minibuf.texi | |
parent | f5ecbceeee0087bcf9b8d94ddf371716fccd05f5 (diff) |
(Minibuffer History): Clarify.
Diffstat (limited to 'lispref/minibuf.texi')
-rw-r--r-- | lispref/minibuf.texi | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/lispref/minibuf.texi b/lispref/minibuf.texi index 73cc0817d9..f69cf03dea 100644 --- a/lispref/minibuf.texi +++ b/lispref/minibuf.texi @@ -450,19 +450,17 @@ 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-all -This function adds a new element @var{newelt}, if non-empty, 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, if -@code{history-delete-duplicates} is non-@code{nil}. - -If @var{keep-all} is non-@code{nil}, even an empty or duplicate -@var{newelt} element is added to the history list. +This function adds a new element @var{newelt}, if it isn't the empty +string, to the history list stored in the variable @var{history-var}, +and returns the updated history list. It limits the list length to +the value of @var{maxelt} (if non-@code{nil}) or @code{history-length} +(described below). The possible values of @var{maxelt} have the same +meaning as the values of @code{history-length}. + +Normally, @code{add-to-history} removes duplicate members from the +history list if @code{history-delete-duplicates} is non-@code{nil}. +However, if @var{keep-all} is non-@code{nil}, that says not to remove +duplicates, and to add @var{newelt} to the list even if it is empty. @end defun @defvar history-length |