Merge pull request #2270 from topecongiro/issue-2260

Trim a trailing whitespace on empty line inside code block comment

src/comment.rs

@@ -332,7 +332,11 @@ fn rewrite_comment_inner(
             inside_code_block = !inside_code_block;
         }
         if inside_code_block {
-            result.push_str(line);
+            if line.is_empty() && result.ends_with(' ') {
+                result.pop();
+            } else {
+                result.push_str(line);
+            }
             continue;
         }
 

tests/source/configs-wrap_comments-true.rs

@@ -5,3 +5,11 @@
 fn main() {
     // Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
 }
+
+fn code_block() {
+    // ```rust
+    // let x = 3;
+    //
+    // println!("x = {}", x);
+    // ```
+}

tests/target/configs-wrap_comments-true.rs

@@ -10,3 +10,11 @@ fn main() {
     // nostrud exercitation ullamco laboris nisi
     // ut aliquip ex ea commodo consequat.
 }
+
+fn code_block() {
+    // ```rust
+    // let x = 3;
+    //
+    // println!("x = {}", x);
+    // ```
+}