Made test_tokenize discoverable.

Initial patch from Xiang Zhang. Also fix out-of-date _url_collapse_path() doc
string.

Patch from Xiang Zhang.

curious users.  The previous user content is now in the IDLE doc and is
redundant.  IDLE now means 'Integrated Development and Learning Environment'.

Custom Highlighting. Original patch by Mark Roseman.

Patch by Johannes Niediek.

1. Non-ASCII bytes were accepted after shift sequence.
2. A low surrogate could be emitted in case of error in high surrogate.

longer formatted twice.

getentropy() is blocking, whereas os.urandom() should not block. getentropy()
is supported since Solaris 11.3.

sys.gettrace() when the test is executed, not when the module is loaded.

sys.settrace() may be after after the test is loaded.

Restore also errno value before calling PyErr_SetFromErrno().

imported at startup) now uses the backslashreplace error handler.

now accept the self and the dict keyword arguments.

argument.

unpickler.  Highest 32 bits of 64-bit size for BINUNICODE8 and BINBYTES8
opcodes no longer silently ignored on 32-bit platforms in C implementation.

and nested format_specs. Patch by Anthon van der Neut.