[issue917120] imaplib: incorrect quoting in commands

[Mauro Cicognini]

Mauro Cicognini added the comment:

The removal of the dead code causes imaplib under py3k to lose the quoting 
functionality that is described in documentation (except for passwords, that do 
get always quoted as stated).

I submit that we give at least a temporary warning in the docs, and that the 
_quote() function is exposed to let the programmer do their own quoting when 
they feel it necessary.

--
nosy: +Mauro.Cicognini
versions: +Python 3.3 -Python 2.7

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[issue917120] imaplib: incorrect quoting in commands

[Mauro Cicognini]

Mauro Cicognini added the comment:

David, that is exactly what I meant: functionality for Python 3 is less than 
the functionality available for Python 2, and behavior is completely out of 
sync with the documentation.

Bug or not, and independent of the root cause (I don't know if anyone will ever 
come up with more or better tests), I agree that this behavior for Python 3 has 
been around for a long time. I don't think it will break any significant code, 
but that's just my personal opinion; the main point is that re-introducing 
quoting functionality in imaplib would be a significant effort, also because 
reading the other relevant threads it is apparent that correct implementation 
is not there in Python 2 either.

I think that we have an easy way: 1) fix the documentation for Python 3 so that 
it reflects behavior and 2) expose the _quote() private method with a new 
static function that the user will be able to call when they deem it necessary.
They get to come up with a good regex or other ways to detect strings that need 
quoting, but still it's better than relying (like I did) on the advertised 
functionality and having to dig into the bowels of the module to understand the 
source of some bizarre bugs...

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