Small doc updates for generalized variables

* lisp/emacs-lisp/gv.el (gv-letplace): Fix doc typo.
(gv-define-simple-setter): Update doc of `fix-return'.

* doc/lispref/variables.texi (Adding Generalized Variables):
Update description of FIX-RETURN expansion.

* doc/misc/cl.texi (Obsolete Setf Customization):
Revert defsetf example to the more correct let rather than prog1.

4 files changed, 22 insertions, 7 deletions

diff --git a/doc/lispref/ChangeLog b/doc/lispref/ChangeLog
index c588e81dd1f..6e7a0b7a648 100644
--- a/doc/lispref/ChangeLog
+++ b/doc/lispref/ChangeLog
@@ -1,3 +1,8 @@
+2012-11-07  Glenn Morris  <rgm@gnu.org>
+
+        * variables.texi (Adding Generalized Variables):
+        Update description of FIX-RETURN expansion.
+
 2012-11-06  Glenn Morris  <rgm@gnu.org>
 
         * variables.texi (Setting Generalized Variables):
diff --git a/doc/lispref/variables.texi b/doc/lispref/variables.texi
index a7134af20bd..fb98b3cd035 100644
--- a/doc/lispref/variables.texi
+++ b/doc/lispref/variables.texi
@@ -2089,8 +2089,13 @@ no problem with, e.g., @code{car} and @code{setcar}, because
 @code{setcar} returns the value that it set.  If your @var{setter}
 function does not return @var{value}, use a non-@code{nil} value for
 the @var{fix-return} argument of @code{gv-define-simple-setter}.  This
-wraps the @code{setf} expansion in @code{(prog1 @var{value} @dots{})}
-so that it returns the correct result.
+expands into something equivalent to
+@example
+(let ((temp @var{value}))
+  (@var{setter} @var{args}@dots{} temp)
+  temp)
+@end example
+so ensuring that it returns the correct result.
 @end defmac
 
 
diff --git a/doc/misc/ChangeLog b/doc/misc/ChangeLog
index bd815e3df9f..49f86ef093b 100644
--- a/doc/misc/ChangeLog
+++ b/doc/misc/ChangeLog
@@ -1,3 +1,8 @@
+2012-11-07  Glenn Morris  <rgm@gnu.org>
+
+        * cl.texi (Obsolete Setf Customization):
+        Revert defsetf example to the more correct let rather than prog1.
+
 2012-11-06  Glenn Morris  <rgm@gnu.org>
 
         * cl.texi (Overview): Mention EIEIO here, as well as the appendix.
diff --git a/doc/misc/cl.texi b/doc/misc/cl.texi
index a5a696b6b16..e39186c1222 100644
--- a/doc/misc/cl.texi
+++ b/doc/misc/cl.texi
@@ -4950,9 +4950,8 @@ is completely irregular.
 @end defmac
 
 @defmac defsetf access-fn update-fn
-This is the simpler of two @code{defsetf} forms, and is entirely
-obsolete, being replaced by @code{gv-define-simple-setter} in Emacs
-24.3.
+This is the simpler of two @code{defsetf} forms, and is
+replaced by @code{gv-define-simple-setter} in Emacs 24.3.
 @xref{Adding Generalized Variables,,,elisp,GNU Emacs Lisp Reference Manual}.
 
 Where @var{access-fn} is the name of a function that accesses a place,
@@ -4983,8 +4982,9 @@ not suitable, so that the above @code{setf} should be expanded to
 something more like
 
 @example
-(prog1 @var{value}
-  (@var{update-fn} @var{arg1} @var{arg2} @var{arg3} @var{value}))
+(let ((temp @var{value}))
+  (@var{update-fn} @var{arg1} @var{arg2} @var{arg3} temp)
+  temp)
 @end example
 
 Some examples are: