Add regtests for issue 1650

[lilypond.git] / lily / program-option-scheme.cc

diff --git a/lily/program-option-scheme.cc b/lily/program-option-scheme.cc
index 2c3d60dc8792ebf0f34d9ca01a55f0c7b17e0c82..616e99397a4d2c8c70b7cd5235bf08a9350fcf35 100644 (file)
--- a/lily/program-option-scheme.cc
+++ b/lily/program-option-scheme.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 2001--2011  Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 2001--2012  Han-Wen Nienhuys <hanwen@xs4all.nl>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -123,7 +123,11 @@ internal_set_option (SCM var,
       val = val_scm_bool;
     }
   else if (varstr == "warning-as-error")
-    val = val_scm_bool;
+    {
+      /* warning_as_error is defined in flower/warn.cc */
+      warning_as_error = valbool;
+      val = val_scm_bool;
+    }
   else if (varstr == "music-strings-to-paths")
     {
       music_strings_to_paths = valbool;
@@ -183,12 +187,12 @@ get_help_string ()
   return help;
 }
 
-LY_DEFINE (ly_option_usage, "ly:option-usage", 0, 0, 0, (),
-           "Print @code{ly:set-option} usage.")
+LY_DEFINE (ly_option_usage, "ly:option-usage", 0, 1, 0, (SCM port),
+           "Print @code{ly:set-option} usage.  Optional @var{port} argument"
+           "for the destination defaults to current output port.")
 {
-  string help = get_help_string ();
-  puts (help.c_str ());
-  fflush (stdout);
+  SCM str = scm_from_locale_string (get_help_string ().c_str ());
+  scm_write_line (str, port);
 
   return SCM_UNSPECIFIED;
 }