Document 'equal?' in list of R6RS incompatibilities.

* doc/ref/r6rs.texi (R6RS Incompatibilities): Mention that 'equal?'
  may not terminate when applied to cyclic datums.

diff --git a/doc/ref/r6rs.texi b/doc/ref/r6rs.texi
index 9c5984b..e5ffb78 100644 (file)
--- a/doc/ref/r6rs.texi
+++ b/doc/ref/r6rs.texi
@@ -1,7 +1,7 @@
 @c -*-texinfo-*-
 @c This is part of the GNU Guile Reference Manual.
-@c Copyright (C)  2010, 2011, 2012, 2013
-@c   Free Software Foundation, Inc.
+@c Copyright (C)  2010, 2011, 2012, 2013,
+@c   2014 Free Software Foundation, Inc.
 @c See the file guile.texi for copying conditions.
 
 @node R6RS Support
@@ -100,6 +100,10 @@ ongoing to fix this.
 Guile does not prevent use of textual I/O procedures on binary ports.
 More generally, it does not make a sharp distinction between binary and
 textual ports (@pxref{R6RS Port Manipulation, binary-port?}).
+
+@item
+Guile's implementation of @code{equal?} may fail to terminate when
+applied to arguments containing cycles.
 @end itemize
 
 @node R6RS Standard Libraries