Feature or enhancement

Use ssize_t version API regardless PY_SSIZE_T_CLEAN is defined.

No change to ABI.

Pitch

After Python 3.12 become EOL, extension developers can forget about PY_SSIZE_T_CLEAN completely.

Previous discussion

https://mail.python.org/archives/list/python-dev@python.org/thread/KSREO43D6GQWO5LMVIU2LF7CP4IBYT2C/#FG44N6RL5CT5O3XQ6UV6LBLUCET7IF6I

Linked PRs

• gh-104922: Make PY_SSIZE_T_CLEAN not mandatory #104923
• gh-104922: Make PY_SSIZE_T_CLEAN not mandatory again #105051
• gh-104922: Doc: extending: add note about PY_SSIZE_T_CLEAN #106314
• gh-104922: remove PY_SSIZE_T_CLEAN #106315