Bump minimum clang-format version to 16

Also enforce in format-code.

1 files changed, 13 insertions, 0 deletions

diff --git a/format-code b/format-code
index 5ec5275d..295c5d05 100755
--- a/format-code
+++ b/format-code
@@ -19,6 +19,19 @@
 
 # Please see "Code Formatting" in the manual for additional notes.
 
+# If a newer version of clang-format causes changes to the output that
+# are improvements, bump the minimum required version of clang-format
+# here, and update manual/contributing.rst. There's a comment there
+# that refers to this comment. See also .clang-format.
+min_version=16
+
+clang_version=$(clang-format --version | \
+    awk '{for (i=1; i<=NF; i++) if ($i == "version") {print int($(i+1)); exit}}')
+if [ "$clang_version" -lt "$min_version" ]; then
+    echo "clang-format version >= $min_version is required"
+    exit 2
+fi
+
 cd $(dirname $0)
 for i in $(find . -name 'build*' -prune -o '(' \
 		-name '*.hh' -o -name '*.h' -o -name '*.cc' -o -name '*.c' \