@@ -149,7 +149,7 @@ fn run() -> Result<bool> {
149149 Ok(true)
150150 }
151151 _ => {
152− let mut config = app.config()?;
152+ let config = app.config()?;
153153 let assets = HighlightingAssets::new();
154154
155155 if app.matches.is_present("list-languages") {
@@ -157,7 +157,7 @@ fn run() -> Result<bool> {
157157
158158 Ok(true)
159159 } else if app.matches.is_present("list-themes") {
160− list_themes(&assets, &mut config);
160+ list_themes(&assets, &mut config.clone());
161161
162162 Ok(true)
163163 } else {