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tmux configuration has become very fragmented between versions due to a combination of new features and deprecation of older options. As such, version checking for tmux became a requirement to allow maximum functionality along with version-appropriate configuration. However, wrapping nearly every line with `if-shell` is tedious and becomes virtually unreadable. This enhancement to tmux version-checking creates a logical configuration file structure that reflects the development of tmux. As additional configurations are added and tmux development continues, this structure can be leveraged appropriately and extended as needed. Rather than having multiple `if-shell` checks for the same version, each version or version group with specific requirements can be checked only once. This leads to simpler and fewer `if-shell` version checks. It also reduces the ambiguity introduced by complex `if-shell` commands that include an 'else' conditional. A caveat to adding this enhancement is the additional requirement of the end user to add a tmux variable definition (`POWERLINE_BINDINGS_DIR`) to his/her `~/.tmux.conf` file. For existing tmux users leveraging powerline, this may prove to be a slight one-time nuisance immediately after upgrading. Without this definition, there is no way to determine the location of the additional tmux powerline config files that have been added with this enhancement. The docs have also been updated in this commit to reflect this initial configuration requirement change. Also added are some additional troubleshooting notes that point to definition of this variable as a potential issue. Powerline will continue to work without the definition of `POWERLINE_BINDINGS_DIR`, but some of the functionality will be reduced and the appearance incomplete (i.e. colors). Ultimately, the caveat above is a small price to pay in exchange for a framework that can be leveraged for proper version-appropriate configuration of tmux going forward.
Powerline ========= :Author: Kim Silkebækken (kim.silkebaekken+vim@gmail.com) :Source: https://github.com/Lokaltog/powerline :Version: beta **Powerline is a statusline plugin for vim, and provides statuslines and prompts for several other applications, including zsh, bash, tmux, IPython, Awesome and Qtile.** * `Support forum`_ (powerline-support@googlegroups.com) * `Development discussion`_ (powerline-dev@googlegroups.com) .. image:: https://api.travis-ci.org/Lokaltog/powerline.png?branch=develop :target: `travis-build-status`_ :alt: Build status .. _travis-build-status: https://travis-ci.org/Lokaltog/powerline .. _`Support forum`: https://groups.google.com/forum/#!forum/powerline-support .. _`Development discussion`: https://groups.google.com/forum/#!forum/powerline-dev Features -------- * **Extensible and feature rich, written in Python.** Powerline was completely rewritten in Python to get rid of as much vimscript as possible. This has allowed much better extensibility, leaner and better config files, and a structured, object-oriented codebase with no mandatory third-party dependencies other than a Python interpreter. * **Stable and testable code base.** Using Python has allowed unit testing of all the project code. The code is tested to work in Python 2.6+ and Python 3. * **Support for prompts and statuslines in many applications.** Originally created exclusively for vim statuslines, the project has evolved to provide statuslines in tmux and several WMs, and prompts for shells like bash/zsh and other applications. It's simple to write renderers for any other applications that Powerline doesn't yet support. * **Configuration and colorschemes written in JSON.** JSON is a standardized, simple and easy to use file format that allows for easy user configuration across all of Powerline's supported applications. * **Fast and lightweight, with daemon support for even better performance.** Although the code base spans a couple of thousand lines of code with no goal of "less than X lines of code", the main focus is on good performance and as little code as possible while still providing a rich set of features. The new daemon also ensures that only one Python instance is launched for prompts and statuslines, which provides excellent performance. *But I hate Python / I don't need shell prompts / this is just too much hassle for me / what happened to the original vim-powerline project / …* You should check out some of the Powerline derivatives. The most lightweight and feature-rich alternative is currently Bailey Ling's `vim-airline <https://github.com/bling/vim-airline>`_ project. ------ * Consult the `documentation <https://powerline.readthedocs.org/en/latest/>`_ for more information and installation instructions. * Check out `powerline-fonts <https://github.com/Lokaltog/powerline-fonts>`_ for pre-patched versions of popular, open source coding fonts. Screenshots ----------- Vim statusline ^^^^^^^^^^^^^^ **Mode-dependent highlighting** * .. image:: https://raw.github.com/Lokaltog/powerline/develop/docs/source/_static/img/pl-mode-normal.png :alt: Normal mode * .. image:: https://raw.github.com/Lokaltog/powerline/develop/docs/source/_static/img/pl-mode-insert.png :alt: Insert mode * .. image:: https://raw.github.com/Lokaltog/powerline/develop/docs/source/_static/img/pl-mode-visual.png :alt: Visual mode * .. image:: https://raw.github.com/Lokaltog/powerline/develop/docs/source/_static/img/pl-mode-replace.png :alt: Replace mode **Automatic truncation of segments in small windows** * .. image:: https://raw.github.com/Lokaltog/powerline/develop/docs/source/_static/img/pl-truncate1.png :alt: Truncation illustration * .. image:: https://raw.github.com/Lokaltog/powerline/develop/docs/source/_static/img/pl-truncate2.png :alt: Truncation illustration * .. image:: https://raw.github.com/Lokaltog/powerline/develop/docs/source/_static/img/pl-truncate3.png :alt: Truncation illustration ---- The font in the screenshots is `Pragmata Pro`_ by Fabrizio Schiavi. .. _`Pragmata Pro`: http://www.fsd.it/fonts/pragmatapro.htm
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