| 1 | ---
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| 2 | in_progress: yes
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| 3 | ---
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| 4 | 
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| 5 | How We Build Oils Documentation
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| 6 | ================================
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| 7 | 
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| 8 | 1. Write Markdown by hand, with optional "front matter".
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| 9 | 2. Render Markdown to HTML, and run the result through our own HTML filters.
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| 10 | 3. Publish static HTML to <https://www.oilshell.org/>.
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| 11 | 
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| 12 | The code is in the [doctools/]($oils-src) directory, which uses the
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| 13 | [lazylex/]($oils-src)  library.
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| 14 | 
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| 15 | <div id="toc">
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| 16 | </div>
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| 17 | 
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| 18 | ## Quick Start
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| 19 | 
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| 20 | To build and preview this doc, run:
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| 21 | 
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| 22 |     build/doc.sh split-and-render doc/doc-toolchain.md
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| 23 | 
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| 24 | Open the path in prints in your browser
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| 25 | (`_release/VERSION/doc/doc-toolchain.html`).
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| 26 | 
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| 27 | ## Front Matter and Title
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| 28 | 
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| 29 | Most docs start with something like this:
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| 30 | 
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| 31 |     ---
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| 32 |     in_progress: yes
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| 33 |     default_highlighter: oils-sh
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| 34 |     ---
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| 35 | 
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| 36 |     My Title
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| 37 |     ========
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| 38 | 
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| 39 |     Hello
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| 40 | 
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| 41 | The "front matter" between `---` lines is metadata for rendering the doc.
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| 42 | Github's web UI understands and renders it.
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| 43 | 
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| 44 | ## Plugins That Transform HTML
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| 45 | 
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| 46 | We have some HTML plugins that make writing **markdown** easier.
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| 47 | Note that [CommonMark][] tightens up the rules for embedding HTML in Markdown,
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| 48 | and that is very useful.
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| 49 | 
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| 50 | [CommonMark]: https://www.oilshell.org/blog/2018/02/14.html 
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| 51 | 
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| 52 | ### Table of Contents
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| 53 | 
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| 54 | Insert this into the doc
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| 55 | 
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| 56 |     <div id="toc">
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| 57 |     </div>
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| 58 | 
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| 59 | and it will be expanded into a table of contents derived from `h2` and `h3`
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| 60 | tags.
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| 61 | 
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| 62 | ### Link Shortcuts, e.g. `$xref`
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| 63 | 
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| 64 | Here's an example of how it works.  This Markdown:
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| 65 | 
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| 66 |     The [GNU bash shell]($xref:bash)
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| 67 | 
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| 68 | is translated to HTML by [CommonMark][]:
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| 69 | 
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| 70 |     The <a href="$xref:bash">GNU bash shell</a>
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| 71 | 
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| 72 | Our `$xref:` plugin expands it to:
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| 73 | 
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| 74 |     The <a href="/cross-ref.html#bash">GNU bash shell</a>
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| 75 | 
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| 76 | If the argument is omitted, then the **anchor text** is used.  So you can just write:
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| 77 | 
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| 78 |     [bash][]
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| 79 | 
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| 80 | and it will become:
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| 81 | 
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| 82 |     The <a href="/cross-ref.html#bash">bash</a>
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| 83 | 
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| 84 | List of plugins:
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| 85 | 
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| 86 | - `$xref:bash` expands to `/cross-ref.html#bash` (shown above)
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| 87 | - `$blog-tag:oil-release` expands to `/blog/tags.html#oil-release`
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| 88 | - `$oils-src`
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| 89 | 
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| 90 | See the raw and rendered versions of this doc for more:
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| 91 | 
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| 92 | - [doc-plugins.md][]
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| 93 | - [doc-plugins.html](doc-plugins.html)
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| 94 | 
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| 95 | [doc-plugins.md]: $oils-src:doc/doc-plugins.md
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| 96 | 
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| 97 | ### Syntax Highlighting of Code Blocks
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| 98 | 
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| 99 | Use Markdown's fenced code blocks like this:
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| 100 | 
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| 101 |     ``` sh-prompt
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| 102 |     ysh$ var x = 'hello world'
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| 103 |     ysh$ echo $x
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| 104 |     hello world
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| 105 |     ```
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| 106 | 
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| 107 | Or you can set `default_highlighter` for blocks indented by 4 spaces.
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| 108 | 
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| 109 | Again see [doc-plugins.md][] for examples.
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| 110 | 
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| 111 | ## The Help Toolchain Renders to HTML and ANSI
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| 112 | 
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| 113 | This is done with `doctools/`
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| 114 | 
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| 115 | ## Code Location
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| 116 | 
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| 117 | - [build/doc.sh]($oils-src) drives the tools in [doctools/]($oils-src).
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| 118 | - Markdown files are in [doc/]($oils-src).
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| 119 | 
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| 120 | 
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