vocab : adopt leading TemplateProcessing special token as BOS (#24428)
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@@ -256,6 +256,11 @@ class SpecialVocab:
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if special_first := tmpl_single[0].get('SpecialToken', {}).get('id'):
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if special_first := tmpl_single[0].get('SpecialToken', {}).get('id'):
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if not tokenizer_config:
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if not tokenizer_config:
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special_bos = special_first
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special_bos = special_first
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elif special_first not in (special_bos, special_cls):
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if not special_bos:
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tokenizer_config['bos_token'] = special_bos = special_first
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if not special_cls:
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tokenizer_config['cls_token'] = special_cls = special_first
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self.add_special_token['bos'] = True if special_first in (special_bos, special_cls) else False
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self.add_special_token['bos'] = True if special_first in (special_bos, special_cls) else False
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if special_first not in (special_bos, special_cls):
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if special_first not in (special_bos, special_cls):
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logger.warning(f'Unknown leading special token {special_first!r} in TemplateProcessing<single>')
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logger.warning(f'Unknown leading special token {special_first!r} in TemplateProcessing<single>')
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