fix: get file position for feature variables

    def from_match(cls, file: Path | str, text: str, match: re.Match | None):

        return (

            cls(

                file,

                text.count("\n", 0, match.start()) + 1,

                match.start() - max(0, text.rfind("\n", 0, match.start())),

                file=file,

                line=text.count("\n", 0, match.start()) + 1,

                col=match.start() - max(0, text.rfind("\n", 0, match.start())),

            )

            if match

            else FilePos(file)

            else FilePos(file=file)

        )

    def fingerprint(self):

        digest = hashlib.md5()

        digest.update(self.check_name.encode("utf-8"))

        if self.position:

            digest.update(self.position.norm_file.encode("utf-8"))

        digest.update(self.hash_ctx.encode("utf-8"))

        return digest.hexdigest()

                del inputs[input_name]

        for var in feat.get("variables", []):

            tbc_var = TbcVar.fromdict(var)

            tbc_var.pos = FilePos.find(

                kicker_path,

                kicker_content,

                f'"name": *"{tbc_var.name}"',

            )

            yield from _check_var(

                tbc_var,

                var_prefix,