` is not acceptable. The syntax for instructing Markdown to treat inline text as verbatim is by wrapping it in backticks (`` ` ``). You might have noticed, however, that the text included in between backticks is rendered differently than standard text (on this site these are items highlighted in red). To get around this problem, we could create a new CSS entry that would apply standard styling to all inline verbatim text that includes MathJax code. Below I will show the HTML and CSS source that would accomplish this (note this solution was adapted from [this blog post](http://doswa.com/2011/07/20/mathjax-in-markdown.html)---all credit goes to the original author). + +{{< code file="mathjax-markdown-solution.html" >}} + + + +{{< /code >}} + + + +As before, this content should be included in the HTML source of each page that will be using MathJax. The next code snippet contains the CSS that is used to have verbatim MathJax blocks render with the same font style as the body of the page. + +{{< code file="mathjax-style.css" >}} +code.has-jax { + font: inherit; + font-size: 100%; + background: inherit; + border: inherit; + color: #515151; +} +{{< /code >}} + +In the CSS snippet, notice the line `color: #515151;`. `#515151` is the value assigned to the `color` attribute of the `body` class in my CSS. In order for the equations to fit in with the body of a web page, this value should be the same as the color of the body. + +### Usage + +With this setup, everything is in place for a natural usage of MathJax on pages generated using Hugo. In order to include inline mathematics, just put LaTeX code in between `` `$ TeX Code $` `` or `` `$ TeX Code $` ``. To include display style mathematics, just put LaTeX code in between `

$$TeX Code$$

`. All the math will be properly typeset and displayed within your Hugo generated web page! + +## Additional Formats Through External Helpers + +Hugo has a new concept called _external helpers_. It means that you can write your content using [Asciidoc][ascii], [reStructuredText][rest], or [pandoc]. If you have files with associated extensions, Hugo will call external commands to generate the content. ([See the Hugo source code for external helpers][helperssource].) + +For example, for Asciidoc files, Hugo will try to call the `asciidoctor` or `asciidoc` command. This means that you will have to install the associated tool on your machine to be able to use these formats. ([See the Asciidoctor docs for installation instructions](http://asciidoctor.org/docs/install-toolchain/)). + +To use these formats, just use the standard extension and the front matter exactly as you would do with natively supported `.md` files. + +Hugo passes reasonable default arguments to these external helpers by default: + +- `asciidoc`: `--no-header-footer --safe -` +- `asciidoctor`: `--no-header-footer --safe --trace -` +- `rst2html`: `--leave-comments --initial-header-level=2` +- `pandoc`: `--mathjax` + +{{% warning "Performance of External Helpers" %}} +Because additional formats are external commands generation performance will rely heavily on the performance of the external tool you are using. As this feature is still in its infancy, feedback is welcome. +{{% /warning %}} + +## Learn Markdown + +Markdown syntax is simple enough to learn in a single sitting. The following are excellent resources to get you up and running: + +* [Daring Fireball: Markdown, John Gruber (Creator of Markdown)][fireball] +* [Markdown Cheatsheet, Adam Pritchard][mdcheatsheet] +* [Markdown Tutorial (Interactive), Garen Torikian][mdtutorial] +* [The Markdown Guide, Matt Cone][mdguide] + +[`emojify` function]: /functions/emojify/ +[ascii]: http://asciidoctor.org/ +[bfconfig]: /getting-started/configuration/#configuring-blackfriday-rendering +[blackfriday]: https://github.com/russross/blackfriday +[mmark]: https://github.com/miekg/mmark +[config]: /getting-started/configuration/ +[developer tools]: /tools/ +[emojis]: https://www.webpagefx.com/tools/emoji-cheat-sheet/ +[fireball]: https://daringfireball.net/projects/markdown/ +[gfmtasks]: https://guides.github.com/features/mastering-markdown/#syntax +[helperssource]: https://github.com/gohugoio/hugo/blob/77c60a3440806067109347d04eb5368b65ea0fe8/helpers/general.go#L65 +[hl]: /content-management/syntax-highlighting/ +[hlsc]: /content-management/shortcodes/#highlight +[hugocss]: /css/style.css +[ietf]: https://tools.ietf.org/html/ +[mathjaxdocs]: https://docs.mathjax.org/en/latest/ +[mdcheatsheet]: https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet +[mdguide]: https://www.markdownguide.org/ +[mdtutorial]: http://www.markdowntutorial.com/ +[Miek Gieben's website]: https://miek.nl/2016/march/05/mmark-syntax-document/ - [mmark]: https://github.com/miekg/mmark - [mmarkgh]: https://github.com/miekg/mmark/wiki/Syntax ++[mmark]: https://github.com/mmarkdown/mmark +[org]: http://orgmode.org/ +[pandoc]: http://www.pandoc.org/ +[Pygments]: http://pygments.org/ +[rest]: http://docutils.sourceforge.net/rst.html +[sc]: /content-management/shortcodes/ +[sct]: /templates/shortcode-templates/ diff --cc docs/content/en/content-management/shortcodes.md index b719e681,00000000..3be1c6f9 mode 100644,000000..100644 --- a/docs/content/en/content-management/shortcodes.md +++ b/docs/content/en/content-management/shortcodes.md @@@ -1,419 -1,0 +1,422 @@@ +--- +title: Shortcodes +linktitle: +description: Shortcodes are simple snippets inside your content files calling built-in or custom templates. +godocref: +date: 2017-02-01 +publishdate: 2017-02-01 +lastmod: 2017-03-31 +menu: + docs: + parent: "content-management" + weight: 35 +weight: 35 #rem +categories: [content management] +keywords: [markdown,content,shortcodes] +draft: false +aliases: [/extras/shortcodes/] +testparam: "Hugo Rocks!" +toc: true +--- + +## What a Shortcode is + +Hugo loves Markdown because of its simple content format, but there are times when Markdown falls short. Often, content authors are forced to add raw HTML (e.g., video ``) to Markdown content. We think this contradicts the beautiful simplicity of Markdown's syntax. + +Hugo created **shortcodes** to circumvent these limitations. + +A shortcode is a simple snippet inside a content file that Hugo will render using a predefined template. Note that shortcodes will not work in template files. If you need the type of drop-in functionality that shortcodes provide but in a template, you most likely want a [partial template][partials] instead. + +In addition to cleaner Markdown, shortcodes can be updated any time to reflect new classes, techniques, or standards. At the point of site generation, Hugo shortcodes will easily merge in your changes. You avoid a possibly complicated search and replace operation. + +## Use Shortcodes + +{{< youtube 2xkNJL4gJ9E >}} + +In your content files, a shortcode can be called by calling `{{%/* shortcodename parameters */%}}`. Shortcode parameters are space delimited, and parameters with internal spaces can be quoted. + +The first word in the shortcode declaration is always the name of the shortcode. Parameters follow the name. Depending upon how the shortcode is defined, the parameters may be named, positional, or both, although you can't mix parameter types in a single call. The format for named parameters models that of HTML with the format `name="value"`. + +Some shortcodes use or require closing shortcodes. Again like HTML, the opening and closing shortcodes match (name only) with the closing declaration, which is prepended with a slash. + +Here are two examples of paired shortcodes: + +``` +{{%/* mdshortcode */%}}Stuff to `process` in the *center*.{{%/* /mdshortcode */%}} +``` + +``` +{{}} A bunch of code here {{}} +``` + +The examples above use two different delimiters, the difference being the `%` character in the first and the `<>` characters in the second. + +### Shortcodes with Markdown + - The `%` character indicates that the shortcode's inner content---called in the [shortcode template][sctemps] with the [`.Inner` variable][scvars]---needs further processing by the page's rendering processor (i.e. markdown via Blackfriday). In the following example, Blackfriday would convert `**World**` to `World`: ++In Hugo `0.55` we changed how the `%` delimiter works. Shortcodes using the `%` as the outer-most delimiter will now be fully rendered when sent to the content renderer (e.g. Blackfriday for Markdown), meaning they can be part of the generated table of contents, footnotes, etc. ++ ++If you want the old behavior, you can put the following line in the start of your shortcode template: + +``` - {{%/* myshortcode */%}}Hello **World!**{{%/* /myshortcode */%}} ++{{ $_hugo_config := `{ "version": 1 }` }} +``` + ++ +### Shortcodes Without Markdown + +The `<` character indicates that the shortcode's inner content does *not* need further rendering. Often shortcodes without markdown include internal HTML: + +``` +{{}}

Hello World!

{{}} +``` + +### Nested Shortcodes + +You can call shortcodes within other shortcodes by creating your own templates that leverage the `.Parent` variable. `.Parent` allows you to check the context in which the shortcode is being called. See [Shortcode templates][sctemps]. + +## Use Hugo's Built-in Shortcodes + +Hugo ships with a set of predefined shortcodes that represent very common usage. These shortcodes are provided for author convenience and to keep your markdown content clean. + +### `figure` + +`figure` is an extension of the image syntax in markdown, which does not provide a shorthand for the more semantic [HTML5 `

Hello, Hugo!

Steve Francia

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