transmission/libtransmission/README.md

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# Notes on the C-to-C++ Conversion
- libtransmission was written in C for fifteen years, so eliminating all
Cisms is nearly impossible. **Modernization patches are welcomed** but
it won't all happen overnight. `tr_strdup()` and `constexpr` wil exist
side-by-side in the codebase for the forseeable future.
- It's so tempting to refactor all the things! Please keep modernization
patches reasonably focused so that they will be easy to review.
- Prefer `std::` tools over bespoke ones. For example, use `std::vector`
instead of tr_ptrArray. Redundant bespoke code should be removed.
- Consider ripple effects before adding C++ into public headers. Will it
break C code that #includes that header?