[clang] [clang-format] adds a space after not inside macros (PR #78176)

[via cfe-commits]

https://github.com/mydeveloperday created https://github.com/llvm/llvm-project/pull/78176

No need to add an extract space if merging the characters doesn't cause a problem, hence ) and ! as well as ( do not require the extraneous space.

Fixes #78166 

>From 9d29ad06ff71b855a43f57b339990e41f206ac8d Mon Sep 17 00:00:00 2001
From: mydeveloperday <mydeveloperday at gmail.com>
Date: Mon, 15 Jan 2024 15:42:59 +0000
Subject: [PATCH] [clang-format] adds a space after not inside macros

No need to add an extract space if merging the characters
doesn't cause a problem, hence ) and ! as well as ( do not
require the extraneous space.
---
 clang/lib/Format/TokenAnnotator.cpp   | 2 +-
 clang/unittests/Format/FormatTest.cpp | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
index 227aa0b97af6ba..e45271809e8085 100644
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -4842,7 +4842,7 @@ bool TokenAnnotator::spaceRequiredBefore(const AnnotatedLine &Line,
     return true;
   }
   if (Left.is(TT_UnaryOperator)) {
-    if (Right.isNot(tok::l_paren)) {
+    if (!Right.isOneOf(tok::r_paren, tok::l_paren, tok::exclaim)) {
       // The alternative operators for ~ and ! are "compl" and "not".
       // If they are used instead, we do not want to combine them with
       // the token to the right, unless that is a left paren.
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 8f115fb8cbf0fb..54b8593fb98d42 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -24159,6 +24159,8 @@ TEST_F(FormatTest, AlternativeOperators) {
 
   verifyFormat("int a compl(5);");
   verifyFormat("int a not(5);");
+  verifyFormat("v(not)");
+  verifyFormat("v(not!)");
 
   /* FIXME handle alternate tokens
    * https://en.cppreference.com/w/cpp/language/operator_alternative