fix(reporter): fix reporter and tests... again

README.md

@@ -66,12 +66,12 @@ Next, we have to implement the `Diagnostic` trait for it:
 use miette::{Diagnostic, Severity, DiagnosticSnippet};
 
 impl Diagnostic for MyBad {
-    fn code(&self) -> &(dyn std::fmt::Display + 'static) {
+    fn code(&self) -> Box<dyn std::fmt::Display> {
-        &"oops::my::bad"
+        Box::new("oops::my::bad")
     }
 
-    fn help(&self) -> Option<&(dyn std::fmt::Display)> {
+    fn help(&self) -> Option<Box<dyn std::fmt::Display>> {
-        Some(&"try doing it better next time?")
+        Some(Box::new("try doing it better next time?"))
     }
 
     fn snippets(&self) -> Option<Box<dyn Iterator<Item = DiagnosticSnippet>>> {

src/reporter.rs

@@ -23,11 +23,12 @@ impl MietteReporter {
         snippet: &DiagnosticSnippet,
     ) -> fmt::Result {
         use fmt::Write as _;
-        write!(f, "\n[{}]", snippet.source_name)?;
+        write!(f, "[{}]", snippet.source_name)?;
         if let Some(msg) = &snippet.message {
             write!(f, " {}:", msg)?;
         }
         writeln!(f)?;
+        writeln!(f)?;
         let context_data = snippet
             .source
             .read_span(&snippet.context)
@@ -113,7 +114,8 @@ impl DiagnosticReporter for MietteReporter {
         writeln!(f, "{}[{}]: {}", sev, diagnostic.code(), diagnostic)?;
 
         if let Some(cause) = diagnostic.source() {
-            write!(f, "\n\nCaused by:")?;
+            writeln!(f)?;
+            write!(f, "Caused by:")?;
             let multiple = cause.source().is_some();
 
             for (n, error) in Chain::new(cause).enumerate() {
@@ -127,15 +129,19 @@ impl DiagnosticReporter for MietteReporter {
         }
 
         if let Some(snippets) = diagnostic.snippets() {
-            writeln!(f)?;
+            let mut pre = false;
             for snippet in snippets {
+                if !pre {
+                    writeln!(f)?;
+                    pre = true;
+                }
                 self.render_snippet(f, &snippet)?;
             }
         }
 
         if let Some(help) = diagnostic.help() {
             writeln!(f)?;
-            write!(f, "﹦{}", help)?;
+            writeln!(f, "﹦{}", help)?;
         }
 
         Ok(())

tests/reporter.rs

@@ -38,7 +38,7 @@ fn basic() -> Result<(), MietteError> {
     };
     let out = format!("{:?}", err);
     assert_eq!(
-        "Error[oops::my::bad]: oops!\n\n﹦try doing it better next time?".to_string(),
+        "Error[oops::my::bad]: oops!\n\n﹦try doing it better next time?\n".to_string(),
         out
     );
     Ok(())
@@ -68,6 +68,6 @@ fn fancy() -> Result<(), MietteError> {
     };
     let out = format!("{:?}", err);
     // println!("{}", out);
-    assert_eq!("Error[oops::my::bad]: oops!\n\n[bad_file.rs] This is the part that broke:\n\n    1  | source\n    2  |   text\n    ⫶  |   ^^^^ this bit here\n    3  |     here\n﹦try doing it better next time?".to_string(), out);
+    assert_eq!("Error[oops::my::bad]: oops!\n\n[bad_file.rs] This is the part that broke:\n\n    1  | source\n    2  |   text\n    ⫶  |   ^^^^ this bit here\n    3  |     here\n\n﹦try doing it better next time?\n".to_string(), out);
     Ok(())
 }