feat(core): improve debug formatting for Suggestion

harper-core/src/linting/suggestion.rs

@@ -1,12 +1,15 @@
-use std::{borrow::Borrow, fmt::Display};
+use std::{
+    borrow::Borrow,
+    fmt::{Debug, Display},
+};
 
 use is_macro::Is;
 use serde::{Deserialize, Serialize};
 
 use crate::{Span, case};
 
 /// A suggested edit that could resolve a [`Lint`](super::Lint).
-#[derive(Debug, Clone, Serialize, Deserialize, Is, PartialEq, Eq, Hash)]
+#[derive(Clone, Serialize, Deserialize, Is, PartialEq, Eq, Hash)]
 pub enum Suggestion {
     /// Replace the offending text with a specific character sequence.
     ReplaceWith(Vec<char>),
@@ -83,6 +86,15 @@ impl Display for Suggestion {
     }
 }
 
+// To make debug output more readable.
+// The default debug implementation for Vec<char> isn't ideal in this scenario, as it prints
+// characters one at a time, line by line.
+impl Debug for Suggestion {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        <Self as Display>::fmt(self, f)
+    }
+}
+
 pub trait SuggestionCollectionExt {
     fn to_replace_suggestions(
         self,