* Take re pos/endpos as signed integers
Negative values clamp to 0, and values beyond Py_ssize_t raise
OverflowError.
Assisted-by: Claude Code:claude-opus-5-5
* Port the remaining runtime fixes from #7993
- bytearray: keep the buffer exported while converting the needle of
find/count/index/rfind/rindex/__contains__/split/rsplit and the hex
separator, so resizing from there raises BufferError
- str(): report non-str encoding/errors as "str() argument 'X' must be
str, not T", and check argument counts and name/position duplicates
for keyword calls
- _json.scanstring: take end as a signed integer and raise ValueError
when it is out of bounds
- lzma: reject filter specs with keys the filter does not take
- mmap: raise ValueError when growing a shared anonymous mapping on
Linux/NetBSD
- _sqlite3: check that the backup progress argument is callable
- Remove the expectedFailure markers of the tests these fix
Assisted-by: Claude Code:claude-opus-5-5
* Reject arguments given by name and position in FuncArgs::bind_for
bind_for reports a keyword that fills a parameter already given by
position before other binding errors, using the parameter list of the
FromArgs type. getargs shares the message, str() drops its own check,
and blake2b/blake2s name themselves in binding errors.
Assisted-by: Claude Code:claude-opus-5-5
---------
Co-authored-by: James David Clarke <james@jamesdavidclarke.com>
