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fzf in Go
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=========
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This directory contains the source code for the new fzf implementation in
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[Go][go]. This new version has the following benefits over the previous Ruby
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version.
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- Immensely faster
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- No GIL. Performance is linearly proportional to the number of cores.
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- It's so fast that I even decided to remove the sort limit (`--sort=N`)
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- Does not require Ruby and distributed as an executable binary
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- Ruby dependency is especially painful on Ruby 2.1 or above which
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ships without curses gem
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Build
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-----
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```sh
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# Build fzf executable
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make
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# Install the executable to ../bin directory
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make install
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# Build executables for Linux using Docker
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make linux
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```
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System requirements
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-------------------
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Currently prebuilt binaries are provided only for OS X and Linux. The install
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script will fall back to the legacy Ruby version on the other systems, but if
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you have Go installed, you can try building it yourself. (`make install`)
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However, as pointed out in [golang.org/doc/install][req], the Go version will
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not run on CentOS/RHEL 5.x and thus the install script will choose the Ruby
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version instead.
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The Go version depends on [ncurses][ncurses] and some Unix system calls, so it
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shouldn't run natively on Windows at the moment. But it should be not
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impossible to support Windows by falling back to a cross-platform alternative
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such as [termbox][termbox] only on Windows. If you're interested in making fzf
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work on Windows, please let me know.
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Third-party libraries used
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--------------------------
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- [ncurses][ncurses]
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- [mattn/go-runewidth](https://github.com/mattn/go-runewidth)
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- Licensed under [MIT](http://mattn.mit-license.org/2013)
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- [mattn/go-shellwords](https://github.com/mattn/go-shellwords)
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- Licensed under [MIT](http://mattn.mit-license.org/2014)
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Contribution
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------------
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For the moment, I will not add or accept any new features until we can be sure
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that the implementation is stable and we have a sufficient number of test
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cases. However, fixes for obvious bugs and new test cases are welcome.
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I also care much about the performance of the implementation (that's the
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reason I rewrote the whole thing in Go, right?), so please make sure that your
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change does not result in performance regression. Please be minded that we
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still don't have a quantitative measure of the performance.
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License
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-------
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[MIT](LICENSE)
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[go]: https://golang.org/
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[ncurses]: https://www.gnu.org/software/ncurses/
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[req]: http://golang.org/doc/install
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[termbox]: https://github.com/nsf/termbox-go
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