lib/rouge/tex_theme_renderer.rb in rouge-3.7.0 vs lib/rouge/tex_theme_renderer.rb in rouge-3.8.0

@@ -111,10 +111,11 @@
     def render_blank(tok, &b)
       out = "\\expandafter\\def#{token_name(tok)}#1{#1}"
     end
 
     def render_style(tok, style, &b)
-      out = "\\expandafter\\def#{token_name(tok)}#1{"
+      out = String.new('')
+      out << "\\expandafter\\def#{token_name(tok)}#1{"
       out << "\\fboxsep=0pt\\colorbox{#{palette_name(style[:bg])}}{" if style[:bg]
       out << '\\textbf{' if style[:bold]
       out << '\\textit{' if style[:italic]
       out << "\\textcolor{#{palette_name(style[:fg])}}{" if style[:fg]
       out << "#1"