update outdated comments

[lilypond.git] / lily / paper-outputter-scheme.cc

diff --git a/lily/paper-outputter-scheme.cc b/lily/paper-outputter-scheme.cc
index 672eab7ce72c07838c780ede3ad5030d9ffac913..2149f0ec2cb87ba88dbcfac5662fe6c84733411e 100644 (file)
--- a/lily/paper-outputter-scheme.cc
+++ b/lily/paper-outputter-scheme.cc
@@ -18,10 +18,9 @@ LY_DEFINE (ly_make_paper_outputter, "ly:make-paper-outputter",
           "@code{output-}@var{format}, writing to  @var{port}.")
 {
   LY_ASSERT_TYPE (ly_is_port, port, 1);
-  LY_ASSERT_TYPE (scm_is_string, format, 2);
-
-  string f = ly_scm2string (format);
+  LY_ASSERT_TYPE (ly_is_symbol, format, 2);
 
+  string f = ly_symbol2string (format);
   string output_name = "<unknown>";
 
   SCM port_name = scm_port_filename (port);