match = CODE_BLOCK_LANG_RE.match(line)
    if match:
        return match.group(1)
    return ""


def extract_multiline_code_blocks(text: list[str]) -> list[MultilineCodeBlockInfo]:
    blocks: list[MultilineCodeBlockInfo] = []

    in_code_block3 = False
    in_code_block4 = False
    current_block_lang = ""
    current_block_start_line = -1
    current_block_lines = []