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# Gregorio

Gregorio is a software application for engraving Gregorian Chant scores on a computer. Gregorio's main job is to convert a [gabc file](http://gregorio-project.github.io/gabc/index.html) (simple text representation of a score) into a [GregorioTeX file](http://gregorio-project.github.io/gregoriotex/index.html), which makes [TeX](http://gregorio-project.github.io/gregoriotex/tex.html) able to create a PDF of your score.

## Usage

Create a `.gabc` file representing your score (see our [tutorial](http://gregorio-project.github.io/tutorial/tutorial-gabc-01.html)), or fetch one from [the database](http://gregobase.selapa.net/).

Create a [LaTeX](http://en.wikipedia.org/wiki/LaTeX) file that will produce the final pdf, and include your score. See [the example](examples/main-lualatex.tex).

Compile the LaTeX file with LuaLaTeX, you get your score in PDF! You can change the LaTeX file to include other scores, create booklets, books, etc.

You can also try it online [here](http://dev.illuminarepublications.com/gregorio/).

## Installation

You need a recent and working [TeXLive](https://www.tug.org/texlive/), on top of which you just need to install latest [Gregorio release](https://github.com/gregorio-project/gregorio/releases). See [the website](http://gregorio-project.github.io/installation.html) for more details.

**Note:** Due to a bug in the v2.7-fix-3 release of `luaotfload` the documentation cannot be built against TeXLive 2016 if you have that version of `luaotfload` (see [#1188](https://github.com/gregorio-project/gregorio/issues/1188)).  The result is that users should do one of the following:

- Install from the distribution tar ball where the documentation is already built (recommended for those installing a stable release).
- Switch to TeXLive 2015 (which uses an earlier version of `luaotfload`) to build the docs.
- Upgrade your `luaotfload` to a more recent version (v2.8 or later).

## Building for inclusion in TeXLive

When building gregorio for inclusion in TeXLive, the gregorio executable must not have the version number prefix that is used for other builds.  To make this happen, run `configure` with the `--disable-version-in-exe` option, and the generated Makefile will create a gregorio executable without the version number prefix (i.e., the executable will simply be named `gregorio`).

## Documentation

You can find documentation and useful links in the [documentation](doc/), on [the main website](http://gregorio-project.github.io/) and on [a wiki](http://gregoriochant.org).

## History

See [CHANGELOG.md](CHANGELOG.md).

## Credits

See [CONTRIBUTORS.md](CONTRIBUTORS.md).

## Contributing and bug reporting

See [CONTRIBUTING.md](CONTRIBUTING.md).

## License

The code is mainly under the [GPLv3](https://www.gnu.org/licenses/quick-guide-gplv3.en.html) license, with fonts under the [Open Font License](http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFL). See [complete license](COPYING.md) for more details.