[issue10829] PyUnicode_FromFormatV() bugs with "%" and "%%" format strings

[Ray.Allen]

Ray.Allen <ysj.ray at gmail.com> added the comment:

> Well, the main problem is that there are 3 different codes to parse the format string, and each code is different... Attached patch factorizes the code: create one subfunction parse_format_flags(). It fixes also this issue and prepares the work to fix #10831.


Sounds nice! Maybe several related issues can also use this, like #7330.

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<http://bugs.python.org/issue10829>
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