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Add a warning about UCS-2 builds to the documentation

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ZyX 2014-12-04 22:57:15 +03:00
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docs/source/installation.rst
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@ -7,6 +7,15 @@ Generic requirements
* Python 2.6 or later, 3.2 or later, PyPy 2.0 or later. It is the only * Python 2.6 or later, 3.2 or later, PyPy 2.0 or later. It is the only
non-optional requirement. non-optional requirement.
.. warning:
It is highly advised to use UCS-4 version of Python because UCS-2 version
uses significantly slower text processing (length determination and
non-printable character replacement) functions due to the need of
supporting unicode characters above U+FFFF which are represented as
surrogate pairs. This price will be paid even if configuration has no such
characters.
* C compiler. Required to build powerline client on linux. If it is not present * C compiler. Required to build powerline client on linux. If it is not present
then powerline will fall back to shell script or python client. then powerline will fall back to shell script or python client.
* ``socat`` program. Required for shell variant of client which runs a bit * ``socat`` program. Required for shell variant of client which runs a bit