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Update README and CHANGELOG for v4.0.0

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Josh Holtrop 2026-02-21 22:19:54 -05:00
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7
CHANGELOG.md
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### New Features
- Add `context_user_fields` statement to allow custom context user fields.
- Add `token_user_fields` statement to allow custom token user fields.
- Add `on_token_node` statement to allow custom code when constructing token nodes.
- Add `free_token_node` statement to allow custom code when freeing token nodes.
- Add `p_context_delete()`.
- Allow `drop` patterns to execute lexer user code blocks.
### Breaking Changes
- Replace `p_context_init()` with `p_context_new()` and `p_context_delete()`.
- Renamed `p_free_tree()` to `p_tree_delete()`.
- The `free_token_node` statement now takes a user code block instead of a
function name parameter.
## v3.0.0

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UPGRADING.md
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@ -9,6 +9,8 @@
- Add a call to `p_context_delete()` (for C or C++) after lexing/parsing to
reclaim context memory.
- Rename `p_free_tree()` calls to `p_tree_delete()`.
- Change `free_token_node` statement calls from taking a function name argument
to taking a user code block.
## v3.0.0