* doc/lispref/lists.texi (Sets And Lists): Mention cl provides union etc.

2 files changed, 7 insertions, 3 deletions

diff --git a/doc/lispref/ChangeLog b/doc/lispref/ChangeLog
index 198eb1c8ed2..7d1ce7bff80 100644
--- a/doc/lispref/ChangeLog
+++ b/doc/lispref/ChangeLog
@@ -1,3 +1,7 @@
+2011-05-19  Glenn Morris  <rgm@gnu.org>
+
+        * lists.texi (Sets And Lists): Mention cl provides union etc.
+
 2011-05-19  Nix  <nix@esperi.org.uk>
 
         * windows.texi (Displaying Buffers): pop-to-buffer is not a command.
diff --git a/doc/lispref/lists.texi b/doc/lispref/lists.texi
index fa3fac814c1..40a974cf407 100644
--- a/doc/lispref/lists.texi
+++ b/doc/lispref/lists.texi
@@ -1266,9 +1266,9 @@ functions for sets include @code{memq} and @code{delq}, and their
 @cindex CL note---lack @code{union}, @code{intersection}
 @quotation
 @b{Common Lisp note:} Common Lisp has functions @code{union} (which
-avoids duplicate elements) and @code{intersection} for set operations,
-but GNU Emacs Lisp does not have them.  You can write them in Lisp if
-you wish.
+avoids duplicate elements) and @code{intersection} for set operations.
+Although standard GNU Emacs Lisp does not have them,  the @file{cl}
+library provides versions.  @inforef{Top, Overview, cl}.
 @end quotation
 
 @defun memq object list