Commit 84c3f248 authored by Richard M. Stallman's avatar Richard M. Stallman
Browse files

(Building Lists): Add copy-tree.

parent f6cad089
......@@ -733,6 +733,18 @@ The function @code{delq} offers a way to perform this operation
destructively. See @ref{Sets And Lists}.
@end defun
@defun copy-tree tree &optional vecp
This function returns a copy the tree @code{tree}. If @var{tree} is a
cons cell, this makes a new cons cell with the same @sc{car} and
@sc{cdr}, then recursively copies the @sc{car} and @sc{cdr} in the
same way.
Normally, when @var{tree} is anything other than a cons cell,
@code{copy-tree} simply returns @var{tree}. However, if @var{vecp} is
non-@code{nil}, it copies vectors too (and operates recursively on
their elements).
@end defun
@defun number-sequence from to &optional separation
This returns a list of numbers starting with @var{from}
and incrementing by @var{separation} (or by 1 if @var{separation}
......
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