X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Foutput-def.hh;fp=lily%2Finclude%2Foutput-def.hh;h=eff52c2c3845a7b3f47f85a42b2defcaf7595ed7;hb=0ac07f31e0f95fc18e5916ce756b9c746af7cc58;hp=3f44061513064044bf173a496e43c332ac8f8bcc;hpb=2f1263e2ccdddcac2eb9f7d8ce2ed92867d3d160;p=lilypond.git

diff --git a/lily/include/output-def.hh b/lily/include/output-def.hh
index 3f44061513..eff52c2c38 100644
--- a/lily/include/output-def.hh
+++ b/lily/include/output-def.hh
@@ -65,7 +65,7 @@ public:
   /*
     variables.
    */
-  SCM c_variable (string id) const;
+  SCM c_variable (const string &id) const;
   SCM lookup_variable (SCM sym) const;
   void set_variable (SCM sym, SCM val);
   void normalize ();