New module (oop goops keyword-formals)

This module replaces the method and define-method bindings with their
method* and define-method* counterparts, for use by users who prefer not
to use both kinds of syntactic forms.

* module/oop/goops/keyword-formals.scm: New module.
* am/bootstrap.am: Added
* doc/ref/goops.texi: Document this change.

am/bootstrap.am

@@ -271,6 +271,7 @@ SOURCES =					\
   oop/goops/stklos.scm				\
   oop/goops/accessors.scm			\
   oop/goops/simple.scm				\
+  oop/goops/keyword-formals.scm			\
 						\
   scheme/base.scm				\
   scheme/case-lambda.scm			\

doc/ref/goops.texi

@@ -954,11 +954,39 @@ the rest argument, as for @code{define*}.
 @end deffn
 
 @menu
+* Advanced argument handling in method and define-method::
 * Type dispatch and redefinition for advanced argument handling::
 * next-method call in method*::
 * Advanced argument handling design choices::
 @end menu
 
+@node Advanced argument handling in method and define-method
+@subsubsection Advanced argument handling in method and define-method
+
+Some users may find it more natural not to have to choose between
+@code{define-method} and @code{define-method*} in their code.
+
+It turns out that @code{method*} and @code{define-method*} can do just
+fine also for ordinary methods without keyword formals. They take
+marginally longer to compile but result in the same code as
+@code{method} and @code{define-method} if keyword formals are absent.
+
+For this reason, we provide a module (oop goops keyword-formals) which
+replaces the standard @code{method} and @code{define-method} bindings
+with their keyword formal counterparts. It can be used like this:
+
+@lisp
+(use-modules (oop goops) (oop goops keyword-formals))
+@end lisp
+
+or
+
+@lisp
+(define-module (foo)
+  #:use-module (oop goops)
+  #:use-module (oop goops keyword-formals))
+@end lisp
+
 @node Type dispatch and redefinition for advanced argument handling
 @subsubsection Type dispatch and redefinition for advanced argument handling
 
@@ -1082,6 +1110,9 @@ to only provide the simpler functionality (through @code{method} and
 @code{define-method}).
 @end enumerate
 
+However, note that users who prefer to only use @code{define-method} can
+do so. @xref{Advanced argument handling in method and define-method}.
+
 Second, we have chosen not to do type dispatch on optional or keyword
 arguments. Reasons include:
 

module/oop/goops/keyword-formals.scm

@@ -0,0 +1,31 @@
+;;; installed-scm-file
+
+;;;; 	Copyright (C) 2024 Free Software Foundation, Inc.
+;;;; 
+;;;; This library is free software; you can redistribute it and/or
+;;;; modify it under the terms of the GNU Lesser General Public
+;;;; License as published by the Free Software Foundation; either
+;;;; version 3 of the License, or (at your option) any later version.
+;;;; 
+;;;; This library is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;;;; Lesser General Public License for more details.
+;;;; 
+;;;; You should have received a copy of the GNU Lesser General Public
+;;;; License along with this library; if not, write to the Free Software
+;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;;;; 
+
+
+;;; This module replaces the standard method and define-method syntax
+;;; with versions with advanced argument handling. This doesn't incur
+;;; overhead for methods without keyword formals except marginally for
+;;; compilation.
+;;;
+(define-module (oop goops keyword-formals)
+  #:use-module ((oop goops)
+                #:select ((method* . method)
+                          (define-method* . define-method)))
+  #:re-export-and-replace (method define-method))
+