b11455

vocab : implement PLaMo-3 tokenizer pre-segmentation (#30045)

• vocab : implement PLaMo-3 tokenizer pre-segmentation

The PLaMo-3 tokenizer inserts hard boundaries before running the Unigram
DP, around <|plamo:...|>-looking text, and around runs of at least 4
identical characters or 2 spaces. Without them llama.cpp tokenizes code
indentation and repeated punctuation differently from the reference.

Reproduce the two re.sub() passes in llm_tokenizer_plamo2 by encoding
each segment independently.

• add vocab type "plamo3"

• Update src/llama-vocab.cpp

Co-authored-by: Sigbjørn Skjæret sigbjorn.skjaeret@huggingface.co

• misc change

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Co-authored-by: Sigbjørn Skjæret sigbjorn.skjaeret@huggingface.co

Website:

• https://llama.app

Attestations:

• https://github.com/ggml-org/llama.cpp/attestations/53332190

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