Fix clippy warnings with Rust 1.68

src/bin/bat/clap_app.rs

@@ -559,7 +559,7 @@ pub fn build_app(interactive_output: bool) -> Command {
                 )
                 .group(
                     ArgGroup::new("cache-actions")
-                        .args(&["build", "clear"])
+                        .args(["build", "clear"])
                         .required(true),
                 )
                 .arg(

src/diff.rs

@@ -17,11 +17,11 @@ pub enum LineChange {
 pub type LineChanges = HashMap<u32, LineChange>;
 
 pub fn get_git_diff(filename: &Path) -> Option<LineChanges> {
-    let repo = Repository::discover(&filename).ok()?;
+    let repo = Repository::discover(filename).ok()?;
 
     let repo_path_absolute = fs::canonicalize(repo.workdir()?).ok()?;
 
-    let filepath_absolute = fs::canonicalize(&filename).ok()?;
+    let filepath_absolute = fs::canonicalize(filename).ok()?;
     let filepath_relative_to_repo = filepath_absolute.strip_prefix(&repo_path_absolute).ok()?;
 
     let mut diff_options = DiffOptions::new();

src/preprocessor.rs

@@ -20,7 +20,7 @@ pub fn expand_tabs(line: &str, width: usize, cursor: &mut usize) -> String {
                     // Add tab.
                     let spaces = width - (*cursor % width);
                     *cursor += spaces;
-                    buffer.push_str(&*" ".repeat(spaces));
+                    buffer.push_str(&" ".repeat(spaces));
 
                     // Next.
                     text = &text[index + 1..text.len()];

src/printer.rs

@@ -621,7 +621,7 @@ impl<'a> Printer for InteractivePrinter<'a> {
                                         "{}\n{}",
                                         as_terminal_escaped(
                                             style,
-                                            &*format!("{}{}", self.ansi_style, line_buf),
+                                            &format!("{}{}", self.ansi_style, line_buf),
                                             self.config.true_color,
                                             self.config.colored_output,
                                             self.config.use_italic_text,
@@ -647,7 +647,7 @@ impl<'a> Printer for InteractivePrinter<'a> {
                                 "{}",
                                 as_terminal_escaped(
                                     style,
-                                    &*format!("{}{}", self.ansi_style, line_buf),
+                                    &format!("{}{}", self.ansi_style, line_buf),
                                     self.config.true_color,
                                     self.config.colored_output,
                                     self.config.use_italic_text,