From e0fd5578d2e9b435019a662a78085b00f5177e45 Mon Sep 17 00:00:00 2001
From: Julien Dessaux
Date: Mon, 22 Mar 2021 22:58:22 +0100
Subject: Reworked some docs _index and added an article on hugo shortcodes

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+---
+title: "Adding a custom hugo markdown shortcode to calculate an age"
+date: 2021-03-22
+description: An example of custom hugo shortcode
+tags:
+  - hugo
+---
+
+## Introduction
+
+On the [about-me]({{< relref "/docs/about-me/_index.md" >}}) page I had hardcoded my age. I wanted a way to calculate it automatically when building the site, here is how to do this.
+
+## Adding the shortcode
+
+Added a custom markdown shortcode in hugo in as simple as creating a `layouts/shortcodes/` directory. Each html file created inside will define a shortcode from the filename. In my example I want to calculate my age so I named the shortcode `age.html` and added the following simple template code :
+
+{{< highlight html >}}
+{{ div (sub now.Unix 493473600 ) 31556926 }}
+{{< / highlight >}}
+
+The first number is the timestamp of my birthday, the second represents how many seconds there are in a year.
+
+## Using the shortcode
+
+With this `layouts/shortcodes/age.html` file I can just add the following in a page to add my age :
+
+{{< highlight html >}}
+{{< print "{{% age %}}" >}}
+{{< / highlight >}}
+
+And if you are wondering how I am able to display a shortcode code inside this page without having it render, it is because I defined another shortcode that does exactly that [here](https://git.adyxax.org/adyxax/www/src/branch/master/layouts/shortcodes/print.html)! Hugo really is a powerful static website generator, it is amazing.
+
+## References
+
+  * https://gohugo.io/content-management/shortcodes/
+  * https://github.com/gohugoio/hugo/issues/7561
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