on a file opened in read+write mode (namely: reading, seeking a bit forward,
writing, then seeking before the previous write but still within buffered
data, and writing again).

_tkinter.c is returning <class '_tkinter.Tcl_Obj'> sometimes.  Don't use
tkinter.messagebox.Message - use the helper functions which convert to str.

With Tk < 8.5 _tkinter.c:PythonCmd() raised UnicodeDecodeError, caused IDLE to
exit.  Converted to valid Unicode null in PythonCmd().

non-ASCII scripts. Open and write the script in binary mode, but ensure that
the shebang is decodable from UTF-8 and from the encoding of the script.

#12051: Fix segfault in json.dumps() while encoding highly-nested objects using the C accelerations.

OpenSSL is now compiled with OPENSSL_NO_SSL2 defined (without the SSLv2
protocol) on Debian: fix the ssl module on Debian Testing and Debian Sid.

Optimize also ssl.get_protocol_name(): speed does matter!

clear the end-of-file indicator after CTRL+d.

Patch by Arfrever Frehtes Taifersar Arahesis.

#11910: change import_fresh_module to return None when one of the "fresh" modules can not be imported.

#12017: Fix segfault in json.loads() while decoding highly-nested objects using the C accelerations.

Also, reduce code duplication in LargeMmapTests.

Original patch by Steffen Daode Nurpmeso.

Fix for issue 10684: Folders get deleted when trying to change case with shutil.move (case insensitive file systems only)

Patch by Bryce Verdier.

mmap bug with sparse files. Patch written by Steffen Daode Nurpmeso.