/usr/share/lilypond/2.16.2/ly/guile-debugger.ly is in lilypond-data 2.16.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | %%%% This file is part of LilyPond, the GNU music typesetter.
%%%%
%%%% Copyright (C) 2009--2012 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 "2.16.0"
% 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)
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