Make clippy a bit happier

src/image.rs

@@ -54,6 +54,7 @@ impl Debug for Image {
 }
 
 /// Caches decoded images.
+#[derive(Default)]
 pub struct ImageCache {
     /// Maps from file hashes to ids of decoded images.
     images: HashMap<ImageId, Image>,
@@ -64,7 +65,7 @@ pub struct ImageCache {
 impl ImageCache {
     /// Create a new, empty image cache.
     pub fn new() -> Self {
-        Self { images: HashMap::new(), on_load: None }
+        Self::default()
     }
 
     /// Load and decode an image file from a path.

src/layout/incremental.rs

@@ -21,7 +21,7 @@ pub struct LayoutCache {
 impl LayoutCache {
     /// Create a new, empty layout cache.
     pub fn new() -> Self {
-        Self { frames: HashMap::new(), age: 0 }
+        Self::default()
     }
 
     /// Clear the cache.

src/layout/par.rs

@@ -285,7 +285,7 @@ fn split_runs<'a>(
     range: Range,
 ) -> impl Iterator<Item = (Range, Dir)> + 'a {
     let mut cursor = range.start;
-    bidi.levels[range.clone()]
+    bidi.levels[range]
         .group_by_key(|&level| level)
         .map(move |(level, group)| {
             let start = cursor;

src/layout/shaping.rs

@@ -235,9 +235,8 @@ fn shape_segment<'a>(
                     }
                 }
 
-                match ctx.cache.font.select(ctx.loader, family, variant) {
-                    Some(id) => break (id, true),
-                    None => {}
+                if let Some(id) = ctx.cache.font.select(ctx.loader, family, variant) {
+                    break (id, true);
                 }
             }
             // We're out of families, so we don't do any more fallback and just

src/library/text.rs

@@ -204,7 +204,8 @@ pub fn lang(ctx: &mut EvalContext, args: &mut FuncArgs) -> Value {
 fn lang_dir(iso: &str) -> Dir {
     match iso.to_ascii_lowercase().as_str() {
         "ar" | "he" | "fa" | "ur" | "ps" | "yi" => Dir::RTL,
-        "en" | "fr" | "de" | _ => Dir::LTR,
+        "en" | "fr" | "de" => Dir::LTR,
+        _ => Dir::LTR,
     }
 }