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diff --git a/ly/guile-debugger.ly b/ly/guile-debugger.ly
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+%%%% This file is part of LilyPond, the GNU music typesetter.
+%%%%
+%%%% Copyright (C) 2009--2011 by Ian Hulin <ian@hulin.org.uk>
+%%%%
+%%%% LilyPond is free software: you can redistribute it and/or modify
+%%%% it under the terms of the GNU General Public License as published by
+%%%% the Free Software Foundation, either version 3 of the License, or
+%%%% (at your option) any later version.
+%%%%
+%%%% LilyPond 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 General Public License for more details.
+%%%%
+%%%% You should have received a copy of the GNU General Public License
+%%%% along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
+
+
+
+%%  \include this file to enable the setting of breakpoints in guile.
+%%  Once loaded, this file will open a guile prompt.  Type
+%%  (debug-help)
+%%  at the guile prompt to get a list of possible commands.
+%%  For more information, see the Contributor's Guide.
+
+
+\version "2.14.0"
+
+% define lilypond-module as a variable in the guile-user module and set
+% to the current Scheme module (which will be the lilypond top-level
+% module)
+
+#(module-define! (resolve-module '(guile-user))
+                 'lilypond-module
+                 (current-module))
+%
+% Ensure we have command-line recall available at the guile prompt
+%
+#(use-modules (ice-9 readline))
+#(activate-readline)
+#(display "\n Guile debugger for Lilypond")
+#(display "\n For help enter (debug-help)\n")
+%
+% Ensure debugger definitions are available in lilypond-module and guile-user
+%
+#(use-modules (scm guile-debugger))
+#(ly:module-copy (resolve-module '(guile-user))
+                 (resolve-module '(scm guile-debugger)))
+#(top-repl)
+%
+% top-repl has re-set the module to guile-user,
+%  so we need to set it back to lilypond-module
+%
+#(ly:module-copy (current-module) (resolve-module '(lilypond-module)))
+#(set-current-module lilypond-module)