if (!gh_string_p (glyph_scm))
return SCM_EOL;
String glyph = String (ly_scm2string (glyph_scm));
Font_metric *fm = Font_interface::get_default_font (me);
if (!gh_string_p (glyph_scm))
return SCM_EOL;
String glyph = String (ly_scm2string (glyph_scm));
Font_metric *fm = Font_interface::get_default_font (me);