Transcode duplicate test to python

tests/find_dupes

@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+#
+"""Check the compiled lscolors.sh file for duplicate extensions."""
+import sys
+import re
+from collections import Counter
+
+
+def main() -> int:
+    with open("../lscolors.sh", "r") as f:
+        data = next(f)
+
+    extensions = re.findall(r"\*\.(.*?)=", data)
+
+    if duplicates := [ext for ext, count in Counter(extensions) if count > 1]:
+        print(f"Duplicates found: {', '.join(duplicates)}")
+        return 1
+    else:
+        print("No duplicates found.")
+        return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
+
+# EOF

tests/no_dupes

@@ -1,8 +0,0 @@
-#!/usr/bin/env bash
-#
-
-exts="$(dircolors LS_COLORS | head -n1 | sed 's/=[^:]*//g ; s/:/\n/g')"
-exts_sorted="$(sort <<< "$exts")"
-exts_uniq="$(sort -u <<< "$exts")"
-
-diff --color=auto --text --report-identical-files <(echo "$exts_uniq") <(echo "$exts_sorted")