[code-quality] Implicit String Concatenation Threads

[Ian Cordasco]

Hey all,

I've been forwarding (and trying to CC) our list on those messages as
much as possible. In case any of you weren't already subscribed to the
python-ideas list, Guido has proposed that python no longer allow the
following:

    foo = ('abc'
              'def'
    )

Mainly because it can cause confusing TypeErrors for the functions
taking a certain number of arguments. There are a few ideas floating
around that thread, one of which is that we (the code-quality tool
authors) provide warnings or errors when someone does:

    foo('a' 'b')

i.e., uses the implicit concatenation on a single line.

I'm personally far more in favor of this (mainly for older versions of
python) + a SyntaxError for newer versions but to allow the multi-line
concatenation to continue.

Some are in favor of adding a new string prefix like `m` or `s`.

All of this aside, we may have to start including support for this in
our tools so I wanted everyone to be well aware of the discussion.

Hopefully people will continue the trend I've tried to start of CC'ing
code-quality but that likely won't happen.

Cheers,
Ian