--- gforth/debugs.fs	2003/08/25 14:17:44	1.9
+++ gforth/debugs.fs	2006/12/31 13:39:12	1.15
@@ -1,6 +1,6 @@
 \ Simple debugging aids
 
-\ Copyright (C) 1995,1997,1999,2002,2003 Free Software Foundation, Inc.
+\ Copyright (C) 1995,1997,1999,2002,2003,2004,2005,2006 Free Software Foundation, Inc.
 
 \ This file is part of Gforth.
 
@@ -39,6 +39,9 @@ require source.fs
 defer printdebugdata ( -- ) \ gforth print-debug-data
 ' .s IS printdebugdata
 defer .debugline ( nfile nline -- ) \ gforth print-debug-line
+\G Print the source code location indicated by @var{nfile nline}, and
+\G additional debugging information; the default @code{.debugline}
+\G prints the additional information with @code{printdebugdata}.
 
 : (.debugline) ( nfile nline -- )
     cr .sourcepos ." :"
@@ -49,5 +52,14 @@ defer .debugline ( nfile nline -- ) \ gf
 
 ' (.debugline) IS .debugline
 
-: ~~ ( compilation  -- ; run-time  -- ) \ gforth tilde-tilde
-    compile-sourcepos POSTPONE .debugline ; immediate
+: .debugline-stderr ( nfile nline -- )
+    stderr >outfile .debugline outfile< ;
+
+:noname ( -- )
+    current-sourcepos .debugline-stderr ;
+:noname ( compilation  -- ; run-time  -- )
+    compile-sourcepos POSTPONE .debugline-stderr ;
+interpret/compile: ~~ ( -- ) \ gforth tilde-tilde
+\G Prints the source code location of the @code{~~} and the stack
+\G contents with @code{.debugline}.
+