@@ -131,8 +131,9 @@ pub fn list_languages(assets: &HighlightingAssets, term_width: usize) {
131131 }
132132}
133133
134−pub fn list_themes(assets: &HighlightingAssets, config: &mut Config) {
134+pub fn list_themes(assets: &HighlightingAssets, cfg: &Config) {
135135 let themes = &assets.theme_set.themes;
136+ let mut config = cfg.clone();
136137 let mut style = HashSet::new();
137138 style.insert(OutputComponent::Plain);
138139 config.files = vec![Some("assets/theme_preview.rs")];
@@ -164,7 +165,7 @@ fn run() -> Result<bool> {
164165
165166 Ok(true)
166167 } else if app.matches.is_present("list-themes") {
167− list_themes(&assets, &mut config.clone());
168+ list_themes(&assets, &config);
168169
169170 Ok(true)
170171 } else {