(Group Parameters): Add note for local variables.

diff --git a/texi/ChangeLog b/texi/ChangeLog
index c239765..b2948ef 100644 (file)
--- a/texi/ChangeLog
+++ b/texi/ChangeLog
@@ -1,3 +1,7 @@
+2009-01-06  Katsumi Yamaoka  <yamaoka@jpl.org>
+
+       * gnus.texi (Group Parameters): Add note for local variables.
+
 2008-12-26  Reiner Steib  <Reiner.Steib@gmx.de>
 
        * gnus.texi (Converting Kill Files): Fix URL.  Include

diff --git a/texi/gnus.texi b/texi/gnus.texi
index 1026b3e..cd7a374 100644 (file)
--- a/texi/gnus.texi
+++ b/texi/gnus.texi
@@ -9,8 +9,8 @@
 @documentencoding ISO-8859-1
 
 @copying
-Copyright @copyright{} 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Copyright @copyright{} 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
 
 @quotation
 Permission is granted to copy, distribute and/or modify this document
@@ -3156,7 +3156,12 @@ that group.  @code{gnus-show-threads} will be made into a local variable
 in the summary buffer you enter, and the form @code{nil} will be
 @code{eval}ed there.
 
-Note that this feature sets the variable locally to the summary buffer.
+Note that this feature sets the variable locally to the summary buffer
+if and only if @var{variable} has been bound as a variable.  Otherwise,
+only evaluating the form will take place.  So, you may want to bind the
+variable in advance using @code{defvar} or other if the result of the
+form needs to be set to it.
+
 But some variables are evaluated in the article buffer, or in the
 message buffer (of a reply or followup or otherwise newly created
 message).  As a workaround, it might help to add the variable in
@@ -3184,9 +3189,9 @@ into the group parameters for the group.
 
 This can also be used as a group-specific hook function.  If you want to
 hear a beep when you enter a group, you could put something like
-@code{(dummy-variable (ding))} in the parameters of that group.
-@code{dummy-variable} will be set to the (meaningless) result of the
-@code{(ding)} form.
+@code{(dummy-variable (ding))} in the parameters of that group.  If
+@code{dummy-variable} has been bound (see above), it will be set to the
+(meaningless) result of the @code{(ding)} form.
 
 Alternatively, since the VARIABLE becomes local to the group, this
 pattern can be used to temporarily change a hook.  For example, if the