powerline/docs/source/develop/tips-and-tricks.rst

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Tips and tricks for powerline developers
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Profiling powerline in Vim
==========================
Given that current directory is the root of the powerline repository the
following command may be used:
.. code-block:: sh
vim --cmd 'let g:powerline_pyeval="powerline#debug#profile_pyeval"' \
--cmd 'set rtp=powerline/bindings/vim' \
-c 'runtime! plugin/powerline.vim' \
{other arguments if needed}
After some time run ``:WriteProfiling {filename}`` Vim command. Currently this
only works with recent Vim and python-2*. It should be easy to modify
:file:`powerline/bindings/vim/autoload/powerline/debug.vim` to suit other
needs.