[clang] [clang-format] Stop fixing indentation on namespace closing brace (PR #122234)

[Owen Pan via cfe-commits]

https://github.com/owenca created https://github.com/llvm/llvm-project/pull/122234

Fixes #119790.

>From 38b8ebca922a7511d9f2bc048f3df0c9863cafc8 Mon Sep 17 00:00:00 2001
From: Owen Pan <owenpiano at gmail.com>
Date: Thu, 9 Jan 2025 00:16:30 -0800
Subject: [PATCH] [clang-format] Stop fixing indentation on namespace closing
 brace

Fixes #119790.
---
 clang/lib/Format/UnwrappedLineFormatter.cpp    |  2 +-
 clang/unittests/Format/FormatTestSelective.cpp | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/clang/lib/Format/UnwrappedLineFormatter.cpp b/clang/lib/Format/UnwrappedLineFormatter.cpp
index ec65fea6ec3df9..cee84fb1191abb 100644
--- a/clang/lib/Format/UnwrappedLineFormatter.cpp
+++ b/clang/lib/Format/UnwrappedLineFormatter.cpp
@@ -1460,7 +1460,7 @@ unsigned UnwrappedLineFormatter::format(
     bool ContinueFormatting =
         TheLine.Level > RangeMinLevel ||
         (TheLine.Level == RangeMinLevel && !PreviousRBrace &&
-         !TheLine.startsWith(tok::r_brace));
+         !TheLine.startsWith(TT_NamespaceRBrace));
 
     bool FixIndentation = (FixBadIndentation || ContinueFormatting) &&
                           Indent != TheLine.First->OriginalColumn;
diff --git a/clang/unittests/Format/FormatTestSelective.cpp b/clang/unittests/Format/FormatTestSelective.cpp
index 3ae70a15d359b2..624684c7a079b8 100644
--- a/clang/unittests/Format/FormatTestSelective.cpp
+++ b/clang/unittests/Format/FormatTestSelective.cpp
@@ -388,6 +388,17 @@ TEST_F(FormatTestSelective, WrongIndent) {
                    "  int j;\n" // Format here.
                    "}",
                    24, 0));
+  EXPECT_EQ("namespace {\n"
+            "class C {\n"
+            "  int i;\n"
+            "};\n"
+            "} // namespace",
+            format("namespace {\n" // Format here.
+                   "  class C {\n"
+                   "    int i;\n"
+                   "  };\n"
+                   "}",
+                   1, 0));
 }
 
 TEST_F(FormatTestSelective, AlwaysFormatsEntireMacroDefinitions) {