# Ronn-NG

Ronn-NG is a new, currently-maintained fork of the defunct [original Ronn
project](https://github.com/rtomayko/ronn).

Ronn builds manuals. It converts simple, human readable textfiles to roff for
terminal display, and also to HTML for the web.

The source format includes all of Markdown but has a more rigid structure and
syntax extensions for features commonly found in manpages (definition lists,
link notation, etc.). The ronn-format(7) manual page defines the format in
detail.

The `*.ronn` files found in the [`man/`][1] directory show off a wide range of
ronn capabilities:

  * [ronn(1)](http://rtomayko.github.com/ronn/ronn.1) command -
    [source file](http://github.com/apjanke/ronn-ng/blob/master/man/ronn.1.ronn),
    [roff output](http://github.com/apjanke/ronn-ng/blob/master/man/ronn.1)

  * [ronn-format(7)](http://rtomayko.github.com/ronn/ronn-format.7) -
    [source file](http://github.com/apjanke/ronn-ng/blob/master/man/ronn-format.7.ronn),
    [roff output](http://github.com/apjanke/ronn-ng/blob/master/man/ronn-format.7)

[1]: http://github.com/apjanke/ronn-ng/tree/master/man

As an alternative, you might want to check out [pandoc](http://johnmacfarlane.net/pandoc/) which can also convert markdown into roff manual pages.

## Installation

Install with Homebrew on macOS:

```
brew tap apjanke/ronn-ng
brew install ronn-ng
```

Install with `gem` anywhere that supports it:

```
gem install ronn-ng
```

See [INSTALLING.md](INSTALLING.md) for details on other systems and installation methods.

## Examples

Build roff and HTML output files for one or more input files:

    $ ronn man/ronn.5.ronn
    roff: man/ronn.5
    html: man/ronn.5.html

Generate only a standalone HTML version of one or more files:

    $ ronn --html man/markdown.5.ronn
    html: man/markdown.5.html

Build roff versions of all ronn files in a directory:

    $ ronn --roff man/*.ronn

View a ronn file as if it were a manpage without building intermediate files:

    $ ronn --man man/markdown.5.ronn

View roff output with man(1):

    $ man man/ronn.5

The [ronn(1)](http://rtomayko.github.com/ronn/ronn.1) manual page includes
comprehensive documentation on `ronn` command line options.

## Background

Some think Unix manual pages are a poor and outdated form of documentation. I
disagree:

- Manpages follow a well defined structure that's immediately familiar. This
  gives developers a starting point when documenting new tools, libraries, and
  formats.

- Manpages get to the point. Because they're written in an inverted style, with
  a SYNOPSIS section followed by additional detail, prose and references to
  other sources of information, manpages provide the best of both cheat sheet
  and reference style documentation.

- Historically, manpages use an extremely -- unbelievably -- limited set of
  text formatting capabilities. You get a couple of headings, lists, bold,
  underline and no more. This is a feature.

- Although two levels of section hierarchy are technically supported, most
  manpages use only a single level. Unwieldy document hierarchies complicate
  otherwise good documentation. Remember that Feynman covered all of physics
  -- heavenly bodies through QED -- with only two levels of document hierarchy
  (_The Feynman Lectures on Physics_, 1970).

- The classical terminal manpage display is typographically well thought out.
  Big bold section headings, justified monospace text, nicely indented
  paragraphs, intelligently aligned definition lists, and an informational
  header and footer.

- Manpages have a simple referencing syntax; e.g., sh(1), fork(2), markdown(7).
  HTML versions can use this to generate links between pages.

Unfortunately, figuring out how to create a manpage is a fairly tedious process.
The roff/mandoc/mdoc macro languages are highly extensible, fractured between
multiple dialects, and include a bunch of device specific stuff irrelevant to
modern publishing tools.

## Requirements

Ruby 2.3 or newer.

## Project Management

The project home page is at https://github.com/apjanke/ronn-ng. Bug reports,
feature requests, and patch submissions are welcome.

Ronn-NG was forked from the original Ronn project in 2018 after Ronn
development had been defunct for a couple years, and Andrew wanted
some bugs fixed.

## License and Copying

MIT License.

Ronn is Copyright (C) 2010 [Ryan Tomayko](http://tomayko.com/about).

New Ronn-NG material is Copyright (C) 2018, 2019 [Andrew Janke](https://apjanke.net).

See the file LICENSE.txt for information of licensing and distribution.

## Build Status

![Travis build status](https://travis-ci.com/apjanke/ronn-ng.svg?branch=master)