zzy ce8031b21f feat(parse): implement # and ## operator handling in macro expansion ...

- Add support for # (stringify) and ## (concatenation) operators in macro replacement lists
- Implement scc_pp_expand_string_unsafe() to process operator tokens during macro expansion
- Add helper macros to identify blank, stringify, and concatenation tokens in replacement lists
- Include missing headers (ctype.h, string.h) for character handling functions
- Update object macro expansion to use new string expansion function instead of simple concatenation
- Improve whitespace handling in macro replacement parsing to prevent interference with operator processing

2025-12-13 18:29:21 +08:00

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