Remove extra trailing newline when formatting stdin to stdout

The `println!` macro was used when printing the result of formatting
stdin. This added a newline character to the output stream which
otherwise contained exactly the formatted file contents. When using the
formatter with IDE integrations it's important for stdout to be exactly
as intended.

Author: zaneduffield

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Incorrect parsing for generic type param lists containing semicolons.
+- Extra trailing newline when formatting stdin to stdout.
 
 ## [0.1.0] - 2023-08-28
 

orchestrator/src/file_formatter.rs

@@ -124,13 +124,15 @@ impl FileFormatter {
     }
     pub fn format_stdin_to_stdout(&self, input: &str) {
         let formatted_input = self.formatter.format(input);
-        println!("{}", formatted_input);
+        print!("{}", formatted_input);
     }
     pub fn format_files_to_stdout<S: AsRef<str>>(&self, paths: &[S]) {
         self.exec_format(
             paths,
             OpenOptions::new(),
             |_, file_path, _, formatted_output| {
+                // Append a newline to the formatted output deliberately because makes it more
+                // human-readable and no less machine-readable.
                 println!("{}:\n{}", file_path.to_string_lossy(), formatted_output);
                 Ok(())
             },