Weichen Zhao d899681040 feat(core): add XML format option for get_buffer_string (#34802) ...

## Summary

Add XML format option for `get_buffer_string()` to provide unambiguous
message serialization. This fixes role prefix ambiguity when message
content contains strings like "Human:" or "AI:".

  Fixes #34786

  ## Changes

- Add `format="xml"` parameter with proper XML escaping using
`quoteattr()` for attributes
- Add explicit validation for format parameter (raises `ValueError` for
invalid values)
  - Add comprehensive tests for XML format edge cases

<img width="1952" height="706" alt="image"
src="https://github.com/user-attachments/assets/1cd6f887-9365-43cf-a532-72d7addd8bad"
/>
<img width="2786" height="776" alt="image"
src="https://github.com/user-attachments/assets/a07b0db0-519c-46d7-b34b-b404237d812b"
/>

---------

Co-authored-by: Mason Daugherty <github@mdrxy.com>
Co-authored-by: Mason Daugherty <mason@langchain.dev>

2026-01-22 13:33:08 -05:00

..

benchmarks

chore(deps): bump mypy to v1.19 and ruff to v1.14 (#34521)

2025-12-29 18:07:55 -06:00

integration_tests

core: Add ruff rules for PIE (#26939)

2024-09-27 12:08:35 -04:00

unit_tests

feat(core): add XML format option for get_buffer_string (#34802)

2026-01-22 13:33:08 -05:00

__init__.py

…