Clippy errors

packages/tools/src/bin/cleanup_blockquotes.rs

@@ -20,12 +20,12 @@ fn main() {
         buffer
     };
 
-    let fixed = cleanup_blockquotes(input);
+    let fixed = cleanup_blockquotes(&input);
     print!("{fixed}");
 }
 
-fn cleanup_blockquotes(input: String) -> String {
-    let normal_start = EXTRA_SPACE.replace_all(&input, ">");
+fn cleanup_blockquotes(input: &str) -> String {
+    let normal_start = EXTRA_SPACE.replace_all(input, ">");
     let sans_empty_leading = EMPTY_LEADING.replace_all(&normal_start, "\n\n");
     sans_empty_leading.to_string()
 }
@@ -42,7 +42,7 @@ mod tests {
     #[test]
     fn extra_space() {
         let input = " > Hello".to_string();
-        let actual = cleanup_blockquotes(input);
+        let actual = cleanup_blockquotes(&input);
         assert_eq!(actual, "> Hello");
     }
 
@@ -110,7 +110,7 @@ here, but `map` is more idiomatic.) In the body of the function we supply to
 a `String`. When all is said and done, we have an `Option<String>`.
 "#.to_string();
 
-        let actual = cleanup_blockquotes(input);
+        let actual = cleanup_blockquotes(&input);
         assert_eq!(
             actual,
             r#"

packages/tools/src/bin/concat_chapters.rs

@@ -48,7 +48,7 @@ fn match_files(
 ) -> Vec<(PathBuf, PathBuf)> {
     read_dir(source_dir)
         .expect("Unable to read source directory")
-        .filter_map(|maybe_entry| maybe_entry.ok())
+        .filter_map(Result::ok)
         .filter_map(|entry| {
             let source_filename = entry.file_name();
             let source_filename =

packages/tools/src/bin/lfp.rs

@@ -35,10 +35,10 @@ fn main() {
                                 path.display(),
                                 line_num,
                                 line
-                            )
+                            );
                         }
                         LintingError::UnableToOpenFile => {
-                            eprintln!("Unable to open {}.", path.display())
+                            eprintln!("Unable to open {}.", path.display());
                         }
                     }
                 }
@@ -93,13 +93,13 @@ where
                 Ok(())
             }
         })
-        .filter(|result| result.is_err())
+        .filter(Result::is_err)
         .map(|result| result.unwrap_err())
         .collect()
 }
 
 fn is_file_of_interest(path: &path::Path) -> bool {
-    path.extension().map_or(false, |ext| ext == "md")
+    path.extension().is_some_and(|ext| ext == "md")
 }
 
 fn is_line_of_interest(line: &str) -> bool {