fzf/src/README.md
2015-01-10 01:16:13 +09:00

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fzf in Go
=========
This directory contains the source code for the new fzf implementation in
[Go][go]. The new version has the following benefits over the previous Ruby
version.
- Immensely faster
- No GIL. Performance is linearly proportional to the number of cores.
- It's so fast that I even decided to remove the sort limit. `--sort=N` is
no longer required.
- Does not require Ruby and distributed as an executable binary
- Ruby dependency is especially painful on Ruby 2.1 or above which
ships without curses gem
Build
-----
```sh
# Build fzf executables
make
# Install the executable to ../bin directory
make install
# Build executables for Linux using Docker
make linux
```
System requirements
-------------------
Currently prebuilt binaries are provided only for OS X and Linux. The install
script will fall back to the legacy Ruby version on the other systems, but if
you have Go 1.4 installed, you can try building it yourself. (`make install`)
However, as pointed out in [golang.org/doc/install][req], the Go version may
not run on CentOS/RHEL 5.x and thus the install script will choose the Ruby
version instead.
The Go version depends on [ncurses][ncurses] and some Unix system calls, so it
shouldn't run natively on Windows at the moment. But it should be not
impossible to support Windows by falling back to a cross-platform alternative
such as [termbox][termbox] only on Windows. If you're interested in making fzf
work on Windows, please let me know.
Third-party libraries used
--------------------------
- [ncurses][ncurses]
- [mattn/go-runewidth](https://github.com/mattn/go-runewidth)
- Licensed under [MIT](http://mattn.mit-license.org/2013)
- [mattn/go-shellwords](https://github.com/mattn/go-shellwords)
- Licensed under [MIT](http://mattn.mit-license.org/2014)
Contribution
------------
For the moment, I will not add or accept any new features until we can be sure
that the implementation is stable and we have a sufficient number of test
cases. However, fixes for obvious bugs and new test cases are welcome.
I also care much about the performance of the implementation (that's the
reason I rewrote the whole thing in Go, right?), so please make sure that your
change does not result in performance regression. Please be minded that we
still don't have a quantitative measure of the performance.
License
-------
[MIT](LICENSE)
[go]: https://golang.org/
[ncurses]: https://www.gnu.org/software/ncurses/
[req]: http://golang.org/doc/install
[termbox]: https://github.com/nsf/termbox-go