"""Preserve the trained RTL bank's explicit visual-order convention in table splits."""
class RTLVisualChar(str):
    base_rtl = True

class CTCDecodeMixin:
    def _decode(self, tokens):
        if any(getattr(t[0], 'base_rtl', False) for t in tokens):
            from indra_ocr.rtl import flip
            visual = ''.join(t[0] if isinstance(t[0], str) else self.vocab.chars[t[0] - 1] for t in tokens)
            return flip(visual, base_rtl=True)
        return super()._decode(tokens)