From 4bed0d513deec14176fd36bc688caec975ce1529 Mon Sep 17 00:00:00 2001
From: Dhruv Manilawala <dhruvmanila@gmail.com>
Date: Wed, 4 Oct 2023 11:01:22 +0530
Subject: [PATCH] Use correct start location for class/function clause header

---
 crates/ruff_python_formatter/src/statement/clause.rs | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/crates/ruff_python_formatter/src/statement/clause.rs b/crates/ruff_python_formatter/src/statement/clause.rs
index 449b64e299644..b8138df503773 100644
--- a/crates/ruff_python_formatter/src/statement/clause.rs
+++ b/crates/ruff_python_formatter/src/statement/clause.rs
@@ -203,15 +203,23 @@ impl<'a> ClauseHeader<'a> {
     fn first_keyword_range(self, source: &str) -> FormatResult<TextRange> {
         match self {
             ClauseHeader::Class(header) => {
-                find_keyword(header.start(), SimpleTokenKind::Class, source)
+                let start_position = header
+                    .decorator_list
+                    .last()
+                    .map_or_else(|| header.start(), Ranged::end);
+                find_keyword(start_position, SimpleTokenKind::Class, source)
             }
             ClauseHeader::Function(header) => {
+                let start_position = header
+                    .decorator_list
+                    .last()
+                    .map_or_else(|| header.start(), Ranged::end);
                 let keyword = if header.is_async {
                     SimpleTokenKind::Async
                 } else {
                     SimpleTokenKind::Def
                 };
-                find_keyword(header.start(), keyword, source)
+                find_keyword(start_position, keyword, source)
             }
             ClauseHeader::If(header) => find_keyword(header.start(), SimpleTokenKind::If, source),
             ClauseHeader::ElifElse(ElifElseClause {