and others, including imaplib's own behavior.  I'm applying this only to 3.6
because there's a potential backward compatibility concern: if there are
servers that include ] characters in the 'text' portion of their imap
responses, this code change could introduce a new bug.

Patch by Lita Cho, reviewed by Jessica McKellar, Berker Peksag, Maciej Szulik,
silentghost, and me (I fleshed out the comments with the additional
info/concerns.)

This restores backward compatibility lost in the fix for #21075, and
is better duck typing.

Patch by Akira Li.

Issue25917 : Fix howto links in docs. Point the reference documentation instead of wiki.

Issue25917 : Fix howto links in docs. Point the reference documentation instead of wiki.

Davis reviewing code.

Davis reviewing code.

Reported by Anatoly Techtonik on docs@

Simplified testing for null characters in __name__ setter.

Simplified testing for null characters in __name__ setter.

Patch by John Walker.

Patch by John Walker.

Decimals by 3 times.
Unified error messages in float.as_integer_ratio(), Decimal.as_integer_ratio(),
and Fraction constructors.