[issue2772] Add PendingDeprecationWarning for % formatting

[Benjamin Peterson]

Benjamin Peterson <musiccomposition at gmail.com> added the comment:

On Tue, May 6, 2008 at 4:50 PM, Eric Smith <report at bugs.python.org> wrote:
>
>  Eric Smith <eric at trueblade.com> added the comment:
>
>  Since we're just trying to prevent this function from recursing
>  (indirectly) into itself, I think all of the logic can go here.
>
>  What would you suggest the function _PyErr_InErrorProcessing do differently?

I was just thinking that this problem would probably come up again.

>  I think the real issue is:  Does the additional logic and execution time
>  involved in adding per-thread state justify being "more correct", or can
>  we occasionally lose a warning message?

Well, the first thing to check for is Py_Py3kWarning. Then do the
extra logic and execution speed.

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