Fix clippy.

src/context/src_block.rs

@@ -55,7 +55,7 @@ render!(RenderSrcBlock, ISrcBlock, original, render_context, {
             RenderSrcLine { children }
         })
         .collect();
-    match original.language.as_ref().map(String::as_str) {
+    match original.language.as_deref() {
         Some("bash") => {
             render_context
                 .dependency_manager

src/intermediate/footnote_definition.rs

@@ -32,6 +32,7 @@ pub(crate) struct IRealFootnoteDefinition {
 }
 
 impl IRealFootnoteDefinition {
+    #[allow(clippy::needless_lifetimes)]
     pub(crate) async fn new<'orig, 'parse>(
         _intermediate_context: IntermediateContext<'orig, 'parse>,
         footnote_id: usize,

src/intermediate/macros.rs

@@ -9,6 +9,7 @@ macro_rules! inoop {
         }
 
         impl $istruct {
+            #[allow(clippy::extra_unused_lifetimes)]
             pub(crate) async fn new<'reg, 'orig, 'parse>(
                 _intermediate_context: crate::intermediate::IntermediateContext<'orig, 'parse>,
                 original: &'orig organic::types::$pstruct<'parse>,

src/intermediate/paragraph.rs

@@ -31,6 +31,7 @@ intermediate!(
 );
 
 impl IParagraph {
+    #[allow(clippy::needless_lifetimes)]
     pub(crate) async fn artificial<'orig, 'parse>(
         _intermediate_context: crate::intermediate::IntermediateContext<'orig, 'parse>,
         children: Vec<IObject>,
@@ -50,19 +51,19 @@ impl IParagraph {
             .children
             .iter()
             .filter(|c| match c {
-                IObject::RegularLink(iregular_link) => match &iregular_link.target {
-                    super::LinkTarget::Image { src: _, alt: _ } => true,
-                    _ => false,
-                },
+                IObject::RegularLink(iregular_link) => matches!(
+                    &iregular_link.target,
+                    super::LinkTarget::Image { src: _, alt: _ }
+                ),
                 _ => false,
             })
             .count();
         num_images == 1
             && self.children.iter().all(|c| match c {
-                IObject::RegularLink(iregular_link) => match &iregular_link.target {
-                    super::LinkTarget::Image { src: _, alt: _ } => true,
-                    _ => false,
-                },
+                IObject::RegularLink(iregular_link) => matches!(
+                    &iregular_link.target,
+                    super::LinkTarget::Image { src: _, alt: _ }
+                ),
                 IObject::PlainText(iplain_text) => {
                     iplain_text.source.chars().all(|c| c.is_ascii_whitespace())
                 }

src/intermediate/registry.rs

@@ -180,6 +180,7 @@ async fn convert_definition_contents<'orig, 'parse>(
 }
 
 /// Take a footnote definition that has not yet received a reference and move it into the active footnotes.
+#[allow(clippy::needless_lifetimes)]
 pub(crate) async fn promote_footnote_definition<'orig, 'parse>(
     intermediate_context: IntermediateContext<'orig, 'parse>,
     label: &'parse str,

src/intermediate/regular_link.rs

@@ -186,7 +186,7 @@ impl LinkTarget {
         if path.is_absolute() {
             return Ok(format!("file://{}", input));
         }
-        return Ok(input.into_owned());
+        Ok(input.into_owned())
     }
 
     /// Get file name from the last segment of an image path.
@@ -199,7 +199,7 @@ impl LinkTarget {
         let path = Path::new(input.as_ref());
         match path
             .components()
-            .last()
+            .next_back()
             .ok_or("Images should have at least one component in their path.")?
         {
             std::path::Component::Prefix(_) => {
@@ -209,9 +209,7 @@ impl LinkTarget {
             std::path::Component::RootDir
             | std::path::Component::CurDir
             | std::path::Component::ParentDir => {
-                return Err(
-                    "Final component of an image path should be a normal component.".into(),
-                );
+                Err("Final component of an image path should be a normal component.".into())
             }
             std::path::Component::Normal(file_name) => Ok(file_name
                 .to_str()
@@ -236,6 +234,7 @@ mod tests {
         let registry = Registry::new();
         let registry = Arc::new(Mutex::new(registry));
         let intermediate_context = IntermediateContext::new(registry)?;
+        #[allow(clippy::single_element_loop)]
         for (inp, typ) in [(
             "https://test.example/foo",
             LinkType::Protocol(Cow::from("https")),

src/intermediate/src_block.rs

@@ -77,7 +77,7 @@ intermediate!(
             .collect();
         let language = original.language.map(str::to_owned);
 
-        match language.as_ref().map(String::as_str) {
+        match language.as_deref() {
             Some(lang @ "bash") => {
                 let highlighted = highlight_bash(&lines);
                 if let Ok(highlighted) = highlighted {
@@ -151,7 +151,7 @@ where
     std::string::String: for<'a> From<&'a L>,
 {
     Ok(lines
-        .into_iter()
+        .iter()
         .map(|l| {
             let mut line = ISrcLine::new();
             line.children.push(ISrcSegment::RawText(l.into()));