"""Search a binary as UTF-16 LE, return regex matches."""
import re, sys, pathlib, glob

pattern = sys.argv[1]
paths = sys.argv[2:]
rx = re.compile(pattern)

found = {}
for pat in paths:
    for p in glob.glob(pat):
        try:
            data = pathlib.Path(p).read_bytes().decode("utf-16-le", errors="ignore")
        except Exception as e:
            print(f"[skip] {p}: {e}", file=sys.stderr)
            continue
        for m in rx.findall(data):
            key = m if isinstance(m, str) else m[0]
            found.setdefault(key, []).append(p)

for key in sorted(found.keys()):
    files = sorted(set(pathlib.Path(f).name for f in found[key]))
    print(f"{','.join(files):20s}  {key}")