[issue8260] When I use codecs.open(...) and f.readline() follow up by f.read() return bad result

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

Updated patch.

[I also tried to avoid reading the underlying file if len(self.bytebuffer)>=size, but it does not work with multibytes chars when size=1]

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Added file: http://bugs.python.org/file16706/codecs_read-2.patch

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