Implement DEFINE-EDITOR-ALIAS.

diff --git a/v7/src/edwin/macros.scm b/v7/src/edwin/macros.scm
index 4b0d8215f6aced6fdcb49e251da99b193fcbd265..5fb30f8e5fe765e95b4d2d5e2b622285e24b1198 100644 (file)
--- a/v7/src/edwin/macros.scm
+++ b/v7/src/edwin/macros.scm
@@ -1,8 +1,9 @@
 #| -*-Scheme-*-
 
-$Id: macros.scm,v 1.75 2003/02/14 18:28:12 cph Exp $
+$Id: macros.scm,v 1.76 2006/02/06 18:40:29 cph Exp $
 
-Copyright 1986, 1989-1999, 2001, 2002 Massachusetts Institute of Technology
+Copyright 1987,1989,1991,1992,1993,1995 Massachusetts Institute of Technology
+Copyright 1999,2001,2002,2006 Massachusetts Institute of Technology
 
 This file is part of MIT/GNU Scheme.
 
@@ -29,6 +30,30 @@ USA.
 
 ;; Upwards compatibility:
 (define edwin-syntax-table (->environment '(EDWIN)))
+
+(define-syntax define-editor-alias
+  (sc-macro-transformer
+   (lambda (form env)
+     (if (syntax-match? '(SYMBOL SYMBOL SYMBOL) (cdr form))
+        (let ((type (cadr form))
+              (new (caddr form))
+              (old (cadddr form)))
+          (receive (table name-map)
+              (case type
+                ((MODE)
+                 (values editor-modes mode-name->scheme-name))
+                ((COMMAND)
+                 (values editor-commands command-name->scheme-name))
+                ((VARIABLE)
+                 (values editor-variables variable-name->scheme-name))
+                (else
+                 (error "Unknown alias type:" type)))
+          `(BEGIN
+             (DEFINE ,(name-map new) ,(name-map old))
+             (STRING-TABLE-PUT! ,table
+                                ,(symbol->string new)
+                                ,(name-map old)))))
+        (ill-formed-syntax form)))))
 \f
 (define-syntax define-command
   (rsc-macro-transformer