Meta: Switch to clang-format-15 as the standard formatter

The two major changes noticeable on the SerenityOS codebase are:
- Much improved support for const placement, clang-format-14 ignored
  our east-const configuration in various places
- Different formatting for requires clauses, now breaking them onto
  their own line, which helps with readability a bit

Current versions of CLion also ship LLVM 15, so the built-in formatting
now matches CI formatting again :^)

2 files changed, 11 insertions, 11 deletions

diff --git a/Meta/Azure/Setup.yml b/Meta/Azure/Setup.yml
index 97fc47f662..c24b7eb5ca 100644
--- a/Meta/Azure/Setup.yml
+++ b/Meta/Azure/Setup.yml
@@ -8,9 +8,9 @@ steps:
   - ${{ if eq(parameters.os, 'Serenity') }}:
     - script: |
         wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-        sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-14 main'
+        sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-15 main'
         sudo apt-get update
-        sudo apt-get install clang-format-14 ccache e2fsprogs gcc-12 g++-12 libstdc++-12-dev libmpfr-dev libmpc-dev ninja-build qemu-utils qemu-system-i386 unzip lld
+        sudo apt-get install clang-format-15 ccache e2fsprogs gcc-12 g++-12 libstdc++-12-dev libmpfr-dev libmpc-dev ninja-build qemu-utils qemu-system-i386 unzip lld
       displayName: 'Install Dependencies'
 
   - ${{ if eq(parameters.os, 'Linux') }}:
diff --git a/Meta/lint-clang-format.sh b/Meta/lint-clang-format.sh
index 6641476302..d8746c1984 100755
--- a/Meta/lint-clang-format.sh
+++ b/Meta/lint-clang-format.sh
@@ -28,21 +28,21 @@ fi
 if (( ${#files[@]} )); then
     TOOLCHAIN_DIR=Toolchain/Local/clang/bin
     CLANG_FORMAT=false
-    if command -v clang-format-14 >/dev/null 2>&1 ; then
-        CLANG_FORMAT=clang-format-14
-    elif command -v brew >/dev/null 2>&1 && command -v "$(brew --prefix llvm@14)"/bin/clang-format >/dev/null 2>&1 ; then
-        CLANG_FORMAT="$(brew --prefix llvm@14)"/bin/clang-format
-    elif command -v $TOOLCHAIN_DIR/clang-format >/dev/null 2>&1 && $TOOLCHAIN_DIR/clang-format --version | grep -qF ' 14.' ; then
+    if command -v clang-format-15 >/dev/null 2>&1 ; then
+        CLANG_FORMAT=clang-format-15
+    elif command -v brew >/dev/null 2>&1 && command -v "$(brew --prefix llvm@15)"/bin/clang-format >/dev/null 2>&1 ; then
+        CLANG_FORMAT="$(brew --prefix llvm@15)"/bin/clang-format
+    elif command -v $TOOLCHAIN_DIR/clang-format >/dev/null 2>&1 && $TOOLCHAIN_DIR/clang-format --version | grep -qF ' 15.' ; then
         CLANG_FORMAT=$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($NF, ".") - 1) < 14) exit 1; }'; then
-            echo "You are using '$("${CLANG_FORMAT}" --version)', which appears to not be clang-format 14 or later."
+        if ! "${CLANG_FORMAT}" --version | awk '{ if (substr($NF, 1, index($NF, ".") - 1) < 15) exit 1; }'; then
+            echo "You are using '$("${CLANG_FORMAT}" --version)', which appears to not be clang-format 15 or later."
             echo "It is very likely that the resulting changes are not what you wanted."
         fi
     else
-        echo "clang-format-14 is not available, but C or C++ files need linting! Either skip this script, or install clang-format-14."
-        echo "(If you install a package 'clang-format', please make sure it's version 14 or later.)"
+        echo "clang-format-15 is not available, but C or C++ files need linting! Either skip this script, or install clang-format-15."
+        echo "(If you install a package 'clang-format', please make sure it's version 15 or later.)"
         exit 1
     fi