style: simplify string formatting for readability

src/event.rs

@@ -1298,7 +1298,7 @@ mod tests {
     #[test]
     fn ensure_attrs_do_not_panic() {
         foreach_event!(|event: event::Event| {
-            let _ = format!("{:?}", event);
+            let _ = format!("{event:?}");
         });
         let _ = event::StartCause::Init.clone();
 

src/platform_impl/linux/x11/activation.rs

@@ -172,7 +172,7 @@ fn push_display(buffer: &mut Vec<u8>, display: &impl std::fmt::Display) {
         }
     }
 
-    write!(Writer { buffer }, "{}", display).unwrap();
+    write!(Writer { buffer }, "{display}").unwrap();
 }
 
 #[cfg(test)]

src/platform_impl/linux/x11/mod.rs

@@ -843,24 +843,24 @@ pub enum X11Error {
 impl fmt::Display for X11Error {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
-            X11Error::Xlib(e) => write!(f, "Xlib error: {}", e),
-            X11Error::Connect(e) => write!(f, "X11 connection error: {}", e),
-            X11Error::Connection(e) => write!(f, "X11 connection error: {}", e),
-            X11Error::XidsExhausted(e) => write!(f, "XID range exhausted: {}", e),
-            X11Error::GetProperty(e) => write!(f, "Failed to get X property {}", e),
-            X11Error::X11(e) => write!(f, "X11 error: {:?}", e),
-            X11Error::UnexpectedNull(s) => write!(f, "Xlib function returned null: {}", s),
+            X11Error::Xlib(e) => write!(f, "Xlib error: {e}"),
+            X11Error::Connect(e) => write!(f, "X11 connection error: {e}"),
+            X11Error::Connection(e) => write!(f, "X11 connection error: {e}"),
+            X11Error::XidsExhausted(e) => write!(f, "XID range exhausted: {e}"),
+            X11Error::GetProperty(e) => write!(f, "Failed to get X property {e}"),
+            X11Error::X11(e) => write!(f, "X11 error: {e:?}"),
+            X11Error::UnexpectedNull(s) => write!(f, "Xlib function returned null: {s}"),
             X11Error::InvalidActivationToken(s) => write!(
                 f,
                 "Invalid activation token: {}",
                 std::str::from_utf8(s).unwrap_or("<invalid utf8>")
             ),
-            X11Error::MissingExtension(s) => write!(f, "Missing X11 extension: {}", s),
+            X11Error::MissingExtension(s) => write!(f, "Missing X11 extension: {s}"),
             X11Error::NoSuchVisual(visualid) => {
-                write!(f, "Could not find a matching X11 visual for ID `{:x}`", visualid)
+                write!(f, "Could not find a matching X11 visual for ID `{visualid:x}`")
             },
             X11Error::XsettingsParse(err) => {
-                write!(f, "Failed to parse xsettings: {:?}", err)
+                write!(f, "Failed to parse xsettings: {err:?}")
             },
             X11Error::NoArgb32Format => {
                 f.write_str("winit only supports X11 displays with ARGB32 picture formats")

src/platform_impl/linux/x11/xdisplay.rs

@@ -164,7 +164,7 @@ impl XConnection {
     fn new_xsettings_screen(xcb: &XCBConnection, default_screen: usize) -> Option<xproto::Atom> {
         // Fetch the _XSETTINGS_S[screen number] atom.
         let xsettings_screen = xcb
-            .intern_atom(false, format!("_XSETTINGS_S{}", default_screen).as_bytes())
+            .intern_atom(false, format!("_XSETTINGS_S{default_screen}").as_bytes())
             .ok()?
             .reply()
             .ok()?