1 files changed, 24 insertions, 0 deletions
diff --git a/build-aux/lint-unknown b/build-aux/lint-unknown
new file mode 100755
index 0000000..dda9541
--- /dev/null
+++ b/build-aux/lint-unknown
@@ -0,0 +1,24 @@
+#!/bin/sh
+# build-aux/lint-unknown - Lint checks for unknown files
+#
+# Copyright (C) 2024-2025  Luke T. Shumaker <lukeshu@lukeshu.com>
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+RED=$(tput setaf 1)
+RESET=$(tput sgr0)
+
+err() {
+	printf "${RED}%s${RESET}: %s\n" "$1" "$2" >&2
+	r=1
+}
+
+r=0
+for filename in "$@"; do
+	if ! { [ -f "$filename" ] && ! [ -h "$filename" ]; }; then
+		# Ignore non-files
+		continue
+	fi
+
+	err "$filename" 'cannot lint unknown file type'
+done
+exit $r