fix: Don't add diff symbol to unchanged lines

2025-10-22 09:58:23 -06:00
parent dc1feabef2
commit c7f014ddc6
8 changed files with 53 additions and 54 deletions
--- a/compiler/rustc_errors/src/emitter.rs
+++ b/compiler/rustc_errors/src/emitter.rs
@@ -2698,8 +2698,7 @@ impl HumanEmitter {
                [SubstitutionHighlight { start: 0, end }] if *end == line_to_add.len() => {
                    buffer.puts(*row_num, max_line_num_len + 1, "+ ", Style::Addition);
                }
-                [] => {
-                    // FIXME: needed? Doesn't get exercised in any test.
+                [] | [SubstitutionHighlight { start: 0, end: 0 }] => {
                    self.draw_col_separator_no_space(buffer, *row_num, max_line_num_len + 1);
                }
                _ => {