fork() is suppose to be async-signal safe but the handler calls unsafe functions. A parent handler mitigates the issue.

This also backs out the previous fixes for for #14360, #1717, and #16564.
Those bugs were actually caused by the fact that set_payload didn't decode to
str, thus rendering the model inconsistent.  This fix does mean the data
processed by the encoder functions goes through an extra encode/decode cycle,
but it means the model is always consistent.  Future API updates will provide
a better way to encode payloads, which will bypass this minor de-optimization.

Tests by Vajrasky Kok.

The only file change is adding the v3.2.5 tag to 3.3's .hgtags file.

Issue #18792: Use "127.0.0.1" or "::1" instead of "localhost" as much as possible, since "localhost" goes through a DNS lookup under recent Windows versions.

in the tkinter module.

A pthread_atfork() child handler is used to seeded the PRNG with pid, time
and some stack data.

RuntimeError exception.  Patch by Christian Schubert.

Patch by Yogesh Chaudhari.

Patch by Meador Inge.

See also issue #18647.

determined minimal width of repeated subexpression is >0 (an empty line was
not matched in any case).

Now max width is MAXREPEAT on 32- and 64-bit platforms when one of
subexpressions is unbounded repetition.

OpenSSL 1.0.0+ instead of the deprecated CRYPTO id callback function.

(original patch by Phil Webster).

* describe how \w is different when used in bytes and Unicode patterns.

* describe re.ASCII flag to change that behaviour.

* remove personal references ('I generally prefer...')

* add some more links to the re module in the library reference

* various small edits and re-wording.

inside subjectAltName correctly. Formerly the module has used OpenSSL's
GENERAL_NAME_print() function to get the string represention of ASN.1
strings for rfc822Name (email), dNSName (DNS) and
uniformResourceIdentifier (URI).

Issue #18756: Improve error reporting in os.urandom() when the failure is due to something else than /dev/urandom not existing.

Patch by Catherine Devlin.

and paired splits and joins that do nothing when output_sep is its default \n.
*It in unused in that the class in only instantiated once, with the default.
Make a few other changes in .fetch and its test.

Remove an unused early-out test from the critical path for
dict and set lookups.

When the strings already have matching lengths, kinds, and hashes,
there is no additional information gained by checking the first
characters (the probability of a mismatch is already known to
be less than 1 in 2**64).

prefix from two attributes and two methods of History class.