locale.format() doesn't insert correct decimal separator to string
representation when 'format' argument has '\r' or '\n' symbols in it.
This bug has been reproduced on Python 2.5.2 and svn-trunk.

Python 2.4.5 (#2, Mar 12 2008, 14:42:24)
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import locale
>>> locale.setlocale(locale.LC_ALL, "ru_RU.UTF-8")
'ru_RU.UTF-8'
>>> a = 1.234
>>> print locale.format("%f", a)
1,234000
>>> print locale.format("%f\n", a)
1,234000

>>> print locale.format("%f\r", a)
1,234000


Python 2.6a1+ (trunk:62083, Mar 31 2008, 19:24:56)
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu6)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import locale
>>> locale.setlocale(locale.LC_ALL, "ru_RU.UTF-8")
'ru_RU.UTF-8'
>>> a = 1.234
>>> print locale.format("%f", a)
1,234000
>>> print locale.format("%f\n", a)
1.234000

>>> print locale.format("%f\r", a)
1.234000
Python 2.5.2 (r252:60911, Mar 12 2008, 13:36:25)
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import locale
>>> locale.setlocale(locale.LC_ALL, "ru_RU.UTF-8")
'ru_RU.UTF-8'
>>> a = 1.234
>>> print locale.format("%f", a)
1,234000
>>> print locale.format("%f\n", a)
1.234000

>>> print locale.format("%f\r", a)
1.234000