From 8f45f59df3eccbbb6fc0af1d936cf2f052a375d1 Mon Sep 17 00:00:00 2001
From: John Diamond <john.diamond@airahome.com>
Date: Sat, 12 Oct 2024 22:47:19 +0200
Subject: [PATCH] Meta: Warn before attempting to use clang-format 19

The clang-format version released with llvm 19 will format many files
differently than clang-format-18.

This change presents the existing warning shown for incorrect
clang-format versions to those with versions greater than 18.

Fixes issue #1750
---
 Meta/lint-clang-format.sh | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Meta/lint-clang-format.sh b/Meta/lint-clang-format.sh
index 68304ec7aa8..bca36c2cec8 100755
--- a/Meta/lint-clang-format.sh
+++ b/Meta/lint-clang-format.sh
@@ -39,13 +39,13 @@ if (( ${#files[@]} )); then
         CLANG_FORMAT=$TOOLCHAIN_DIR/clang-format
     elif command -v clang-format >/dev/null 2>&1 ; then
         CLANG_FORMAT=clang-format
-        if ! "${CLANG_FORMAT}" --version | awk '{ if (substr($NF, 1, index($NF, ".") - 1) < 18) exit 1; }'; then
-            echo "You are using '$("${CLANG_FORMAT}" --version)', which appears to not be clang-format 18 or later."
+        if ! "${CLANG_FORMAT}" --version | awk '{ if (substr($NF, 1, index($NF, ".") - 1) != 18) exit 1; }'; then
+            echo "You are using '$("${CLANG_FORMAT}" --version)', which appears to not be clang-format 18."
             echo "It is very likely that the resulting changes are not what you wanted."
         fi
     else
         echo "clang-format-18 is not available, but C or C++ files need linting! Either skip this script, or install clang-format-18."
-        echo "(If you install a package 'clang-format', please make sure it's version 18 or later.)"
+        echo "(If you install a package 'clang-format', please make sure it's version 18.)"
         exit 1
     fi