Addressed feedback and added a few more

* also did one minor spelling change in a print statement in `current-exe-mismatch.rs`

Author: nyurik

README.md

@@ -27,7 +27,7 @@ fn main() {
 
     // do_some_work();
 
-    println!("{:?}", bt);
+    println!("{bt:?}");
 }
 ```
 

crates/debuglink/src/main.rs

@@ -9,7 +9,7 @@ fn main() {
     let expect = std::path::Path::new(&crate_dir).join("src/main.rs");
 
     let bt = backtrace::Backtrace::new();
-    println!("{:?}", bt);
+    println!("{bt:?}");
 
     let mut found_main = false;
 
@@ -20,7 +20,7 @@ fn main() {
         }
 
         if let Some(name) = symbols[0].name() {
-            let name = format!("{:#}", name);
+            let name = format!("{name:#}");
             if name == "debuglink::main" {
                 found_main = true;
                 let filename = symbols[0].filename().unwrap();

crates/macos_frames_test/tests/main.rs

@@ -15,8 +15,7 @@ fn backtrace_no_dsym() {
     let executable_name = dsym_path.file_name().unwrap().to_str().unwrap().to_string();
     assert!(dsym_path.pop()); // Pop executable
     dsym_path.push(format!(
-        "{}.dSYM/Contents/Resources/DWARF/{0}",
-        executable_name
+        "{executable_name}.dSYM/Contents/Resources/DWARF/{executable_name}"
     ));
     let _ = fs::OpenOptions::new()
         .read(false)

examples/raw.rs

@@ -21,7 +21,7 @@ fn print() {
     let mut cnt = 0;
     backtrace::trace(|frame| {
         let ip = frame.ip();
-        print!("frame #{cnt:<2} - {:#0HEX_WIDTH$x}", ip as usize);
+        print!("frame #{:<2} - {:#02$x}", cnt, ip as usize, HEX_WIDTH);
         cnt += 1;
 
         let mut resolved = false;
@@ -39,7 +39,7 @@ fn print() {
             }
             if let Some(file) = symbol.filename() {
                 if let Some(l) = symbol.lineno() {
-                    print!("\n{:13}{:HEX_WIDTH$}@ {}:{l}", "", "", file.display());
+                    print!("\n{:13}{:4$}@ {}:{}", "", "", file.display(), l, HEX_WIDTH);
                 }
             }
             println!("");

src/capture.rs

@@ -156,9 +156,9 @@ impl Backtrace {
     /// use backtrace::Backtrace;
     ///
     /// let mut current_backtrace = Backtrace::new_unresolved();
-    /// println!("{:?}", current_backtrace); // no symbol names
+    /// println!("{current_backtrace:?}"); // no symbol names
     /// current_backtrace.resolve();
-    /// println!("{:?}", current_backtrace); // symbol names now present
+    /// println!("{current_backtrace:?}"); // symbol names now present
     /// ```
     ///
     /// # Required features

src/print.rs

@@ -283,7 +283,7 @@ impl BacktraceFrameFmt<'_, '_, '_> {
         // Filename/line are printed on lines under the symbol name, so print
         // some appropriate whitespace to sort of right-align ourselves.
         if let PrintFmt::Full = self.fmt.format {
-            write!(self.fmt.fmt, "{:HEX_WIDTH$}", "")?;
+            write!(self.fmt.fmt, "{:1$}", "", HEX_WIDTH)?;
         }
         write!(self.fmt.fmt, "             at ")?;
 
@@ -305,7 +305,7 @@ impl BacktraceFrameFmt<'_, '_, '_> {
         // We only care about the first symbol of a frame
         if self.symbol_index == 0 {
             self.fmt.fmt.write_str("{{{bt:")?;
-            write!(self.fmt.fmt, "{}:{frame_ip:?}", self.fmt.frame_index)?;
+            write!(self.fmt.fmt, "{}:{:?}", self.fmt.frame_index, frame_ip)?;
             self.fmt.fmt.write_str("}}}\n")?;
         }
         Ok(())

src/print/fuchsia.rs

@@ -312,7 +312,7 @@ struct HexSlice<'a> {
 impl fmt::Display for HexSlice<'_> {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         for byte in self.bytes {
-            write!(f, "{:02x}", byte)?;
+            write!(f, "{byte:02x}")?;
         }
         Ok(())
     }

src/symbolize/mod.rs

@@ -421,7 +421,7 @@ cfg_if::cfg_if! {
                 // it outwards.
                 if let Some(ref cpp) = self.cpp_demangled.0 {
                     let mut s = String::new();
-                    if write!(s, "{}", cpp).is_ok() {
+                    if write!(s, "{cpp}").is_ok() {
                         return s.fmt(f)
                     }
                 }

tests/accuracy/main.rs

@@ -103,7 +103,7 @@ fn verify(filelines: &[Pos]) {
         loop {
             let sym = match symbols.next() {
                 Some(sym) => sym,
-                None => panic!("{}", "failed to find {file}:{line}"),
+                None => panic!("failed to find {}:{}", file, line),
             };
             if let Some(filename) = sym.filename() {
                 if let Some(lineno) = sym.lineno() {

tests/current-exe-mismatch.rs

@@ -20,7 +20,7 @@ fn main() {
                 println!("test result: ignored");
             }
             Err(EarlyExit::IoError(e)) => {
-                println!("{} parent encoutered IoError: {:?}", file!(), e);
+                println!("{} parent encountered IoError: {:?}", file!(), e);
                 panic!();
             }
         }
@@ -74,7 +74,7 @@ fn parent() -> Result<(), EarlyExit> {
 
 fn child() -> Result<(), EarlyExit> {
     let bt = backtrace::Backtrace::new();
-    println!("{:?}", bt);
+    println!("{bt:?}");
 
     let mut found_my_name = false;
 

tests/long_fn_name.rs

@@ -25,7 +25,7 @@ fn test_long_fn_name() {
     // It's actually longer since it also includes `::`, `<>` and the
     // name of the current module
     let bt = S::<S<S<S<S<S<S<S<S<S<i32>>>>>>>>>>::new();
-    println!("{:?}", bt);
+    println!("{bt:?}");
 
     let mut found_long_name_frame = false;