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Main author: [Fr. Jacques Peron](mailto:cataclop@hotmail.com)\nThis material is subject to the MIT license.\n
# Lyluatex
## Usage

In the preable of your document, include the package `lyluatex`:

```TeX
\usepackage{lyluatex}
```

The `program` option permits the definition of an alternative path to
`lilypond`, for example:

```TeX
\usepackage[program=/opt/lilypond-dev/lilypond]{lyluatex}
```

Thereafter, you can include a lilypond file with the command:

```TeX
\lilypondfile[staffsize=17]{PATH/TO/THE/FILE}
```

The argument `staffsize`, which is optional, changes the size of the score.
You can change the size for all the subsequent scores in a document by
placing the following command before your first include statement to be so
affected:

```TeX
\setluaoption{ly}{staffsize}{24}
```

Next, you simply need to compile the document normally with the command
`lualatex -shell-escape`:

```bash
lualatex -shell-escape DOCUMENT.TEX
```

Another "more secure" option is to add `lilypond` and `gs` to default
allowed commands:

```bash
shell_escape_commands=$(kpsewhich -expand-var '$shell_escape_commands'),lilypond,gs lualatex DOCUMENT.TEX
```

On systems with low RAM, when working on big documents, you could encounter
*buffer overflows* in `lilypond` calls.  In that case, first compile with
luatex's command line option `--draftmode` to generate all LilyPond output
snippets, then compile again without this option to generate the output PDF.

You can also input music directly into your document with the `lilypond`
environment.  This is only recommended for relatively short snippets.  For
example:

```TeX
\begin{lilypond}
\relative c' { c d e f g a b c }
\end{lilypond}
```

Finally, for truly short snippets, there is also the `\lily` command.
Example:

```TeX
\lilypond[staffsize=12]{c' d' g'}
```

**Nota bene:** The `\lilypond` command *does not* support blocks of LilyPond
code with explicit `\score` blocks.  Such code must be included with the
`lilypond` environment or as a separate file.

## Migration from `lilypond-book`

In order to facilitate the migration from `lilypond-book`, `\lilypondfile`,
the environment `lilypond` and the command `\lilypond` should work nearly as
with `lilypond-book`; for even more identical behaviour, call `lyluatex`
as follows:

```TeX
\usepackage[program=/opt/lilypond-dev/lilypond]{lyluatex}
```

That way, documents typeset with `lilypond-book` can be adapted to use
`lyluatex` without much difficulty.

## Note about MiKTeX

The main author doesn’t use MiKTeX, and won’t make any effort to support it.
Nevertheless, pull requests in order to support it will be taken in account.

Actually, *lyluatex* works with MiKTeX with *LilyPond 2.22*: there’s a known
bug with *LilyPond 2.24*: #301.

# Credits

See [Contributors.md](Contributors.md).

# Contributing

If you want improvements or encounter an error, do not hesitate to to report
the [issue](https://github.com/jperon/lyluatex/issues).  If you have
programming skills, you may also propose your changes via a [pull
request](https://github.com/jperon/lyluatex/pulls).

This extension is and will remain free; if you find it useful and wish to
encourage its development by a [donation](https://www.paypal.me/abjperon),
many thanks!