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<title>Posts on Hugo IRIS Theme</title>
<link>/posts/</link>
<description>Recent content in Posts on Hugo IRIS Theme</description>
<generator>Hugo</generator>
<language>en-us</language>
<lastBuildDate>Mon, 11 May 2026 23:49:53 +0900</lastBuildDate>
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<item>
<title>Reveal.js Support</title>
<link>/posts/revealjs/</link>
<pubDate>Fri, 03 Jan 2020 01:00:00 +0000</pubDate>
<guid>/posts/revealjs/</guid>
<description>&lt;h1 id="revealjs" class="title is-2"&gt;Reveal.js&lt;/h1&gt;
&lt;h3 id="the-html-presentation-framework" class="title is-4"&gt;The Html Presentation Framework&lt;/h3&gt;
&lt;p&gt;Created by &lt;a
 href="https://hakim.se/"
 
 target="_blank" rel="noopener noreferrer"&gt;
 Hakim El Hattab
&lt;/a&gt;
 and contributors.&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="hello-there" class="title is-3"&gt;Hello There&lt;/h2&gt;
&lt;p&gt;reveal.js enables you to create beautiful interactive slide decks using HTML.
This presentation will show you examples of what it can do.&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="vertical-slides" class="title is-3"&gt;Vertical Slides&lt;/h2&gt;
&lt;p&gt;To be developed.&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="slide-overview" class="title is-3"&gt;Slide Overview&lt;/h2&gt;
&lt;p&gt;Press ESC to enter the slide overview.&lt;/p&gt;
&lt;hr&gt;
&lt;h2 id="point-of-view" class="title is-3"&gt;Point Of View&lt;/h2&gt;
&lt;p&gt;Hold down the alt key (ctrl in Linux) and click on any element to zoom towards it using &lt;a
 href="https://lab.hakim.se/zoom-js/"
 
 target="_blank" rel="noopener noreferrer"&gt;
 zoom.js
&lt;/a&gt;
.
Click again to zoom back out.&lt;/p&gt;</description>
</item>
<item>
<title>mermaid Graph Support</title>
<link>/posts/mermaid/</link>
<pubDate>Thu, 02 Jan 2020 01:00:00 +0000</pubDate>
<guid>/posts/mermaid/</guid>
<description>&lt;h2 id="mermaid" class="title is-3"&gt;mermaid&lt;/h2&gt;
&lt;p&gt;&lt;a
 href="https://github.com/mermaid-js/mermaid"
 
 target="_blank" rel="noopener noreferrer"&gt;
 mermaid-js/mermaid: Generation of diagram and flowchart from text in a similar manner as markdown
&lt;/a&gt;
&lt;/p&gt;
&lt;h2 id="example" class="title is-3"&gt;Example&lt;/h2&gt;
&lt;h3 id="input" class="title is-4"&gt;Input&lt;/h3&gt;
&lt;p&gt;Use &lt;code&gt;mermaid&lt;/code&gt; shortcode.&lt;/p&gt;
&lt;div class="highlight"&gt;&lt;pre tabindex="0" class="chroma"&gt;&lt;code class="language-md" data-lang="md"&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;{{&amp;lt; mermaid &amp;gt;}}
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;sequenceDiagram
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt; participant Alice
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt; participant Bob
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt; Alice-&amp;gt;&amp;gt;John: Hello John, how are you?
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt; loop Healthcheck
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt; John-&amp;gt;&amp;gt;John: Fight against hypochondria
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt; end
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt; Note right of John: Rational thoughts &amp;lt;br/&amp;gt;prevail!
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt; John--&amp;gt;&amp;gt;Alice: Great!
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt; John-&amp;gt;&amp;gt;Bob: How about you?
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt; Bob--&amp;gt;&amp;gt;John: Jolly good!
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;{{&amp;lt; /mermaid &amp;gt;}}
&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;h3 id="output" class="title is-4"&gt;Output&lt;/h3&gt;
&lt;pre tabindex="0"&gt;&lt;code&gt;&lt;div class="mermaid"&gt;
sequenceDiagram
 participant Alice
 participant Bob
 Alice-&gt;&gt;John: Hello John, how are you?
 loop Healthcheck
 John-&gt;&gt;John: Fight against hypochondria
 end
 Note right of John: Rational thoughts &lt;br/&gt;prevail!
 John--&gt;&gt;Alice: Great!
 John-&gt;&gt;Bob: How about you?
 Bob--&gt;&gt;John: Jolly good!
&lt;/div&gt;

&lt;/code&gt;&lt;/pre&gt;</description>
</item>
<item>
<title>MathJax Support $E=mc^2$</title>
<link>/posts/math/</link>
<pubDate>Wed, 01 Jan 2020 01:00:00 +0000</pubDate>
<guid>/posts/math/</guid>
<description>&lt;h2 id="mathjax" class="title is-3"&gt;MathJax&lt;/h2&gt;
&lt;p&gt;&lt;a
 href="https://github.com/mathjax/MathJax"
 
 target="_blank" rel="noopener noreferrer"&gt;
 mathjax/MathJax: Beautiful math in all browsers
&lt;/a&gt;
&lt;/p&gt;
&lt;h2 id="inline-example" class="title is-3"&gt;Inline Example&lt;/h2&gt;
&lt;h3 id="input" class="title is-4"&gt;Input&lt;/h3&gt;
&lt;div class="highlight"&gt;&lt;pre tabindex="0" class="chroma"&gt;&lt;code class="language-tex" data-lang="tex"&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;Inline &lt;span class="s"&gt;$&lt;/span&gt;&lt;span class="nb"&gt;E &lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="nb"&gt; mc^&lt;/span&gt;&lt;span class="m"&gt;2&lt;/span&gt;&lt;span class="s"&gt;$&lt;/span&gt;
&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;h3 id="output" class="title is-4"&gt;Output&lt;/h3&gt;
&lt;p&gt;Inline $E = mc^2$&lt;/p&gt;
&lt;h2 id="basic-example" class="title is-3"&gt;Basic Example&lt;/h2&gt;
&lt;h3 id="input-1" class="title is-4"&gt;Input&lt;/h3&gt;
&lt;div class="highlight"&gt;&lt;pre tabindex="0" class="chroma"&gt;&lt;code class="language-tex" data-lang="tex"&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;&lt;span class="sb"&gt;$$&lt;/span&gt;&lt;span class="nb"&gt;
&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;&lt;span class="nv"&gt;\sum&lt;/span&gt;&lt;span class="nb"&gt;_{i&lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="m"&gt;0&lt;/span&gt;&lt;span class="nb"&gt;}^n i^&lt;/span&gt;&lt;span class="m"&gt;2&lt;/span&gt;&lt;span class="nb"&gt; &lt;/span&gt;&lt;span class="o"&gt;=&lt;/span&gt;&lt;span class="nb"&gt; &lt;/span&gt;&lt;span class="nv"&gt;\frac&lt;/span&gt;&lt;span class="nb"&gt;{&lt;/span&gt;&lt;span class="o"&gt;(&lt;/span&gt;&lt;span class="nb"&gt;n^&lt;/span&gt;&lt;span class="m"&gt;2&lt;/span&gt;&lt;span class="o"&gt;+&lt;/span&gt;&lt;span class="nb"&gt;n&lt;/span&gt;&lt;span class="o"&gt;)(&lt;/span&gt;&lt;span class="m"&gt;2&lt;/span&gt;&lt;span class="nb"&gt;n&lt;/span&gt;&lt;span class="o"&gt;+&lt;/span&gt;&lt;span class="m"&gt;1&lt;/span&gt;&lt;span class="o"&gt;)&lt;/span&gt;&lt;span class="nb"&gt;}{&lt;/span&gt;&lt;span class="m"&gt;6&lt;/span&gt;&lt;span class="nb"&gt;}
&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;&lt;span class="s"&gt;$$&lt;/span&gt;
&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;h3 id="output-1" class="title is-4"&gt;Output&lt;/h3&gt;
$$
\sum_{i=0}^n i^2 = \frac{(n^2+n)(2n+1)}{6}
$$&lt;h2 id="math-shortcode" class="title is-3"&gt;Math Shortcode&lt;/h2&gt;
&lt;p&gt;See also &lt;a
 href="https://discourse.gohugo.io/t/use-goldmark-mathjax-extension/25721"
 
 target="_blank" rel="noopener noreferrer"&gt;
 this thread
&lt;/a&gt;
.&lt;/p&gt;
&lt;h3 id="input-2" class="title is-4"&gt;Input&lt;/h3&gt;
&lt;div class="highlight"&gt;&lt;pre tabindex="0" class="chroma"&gt;&lt;code class="language-md" data-lang="md"&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;{{&amp;lt; math &amp;gt;}}
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;\begin{vmatrix}a &amp;amp; b\\
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;c &amp;amp; d
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;\end{vmatrix}
&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;{{&amp;lt; /math &amp;gt;}}
&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;h3 id="output-2" class="title is-4"&gt;Output&lt;/h3&gt;
$$

\begin{vmatrix}a &amp; b\\
c &amp; d
\end{vmatrix}

$$</description>
</item>
<item>
<title>GitHub Pages and GitHub Actions</title>
<link>/posts/github-pages-and-github-actions/</link>
<pubDate>Fri, 01 Nov 2019 01:00:00 +0000</pubDate>
<guid>/posts/github-pages-and-github-actions/</guid>
<description>&lt;h2 id="github-actions-for-github-pages" class="title is-3"&gt;GitHub Actions for GitHub Pages&lt;/h2&gt;

 &lt;blockquote&gt;
 &lt;p&gt;GitHub Actions for GitHub Pages 🚀 Deploy static files and publish your site with Static Site Generators
&lt;cite&gt;&lt;a
 href="https://github.com/peaceiris/actions-gh-pages"
 
 target="_blank" rel="noopener noreferrer"&gt;
 peaceiris/actions-gh-pages
&lt;/a&gt;
&lt;/cite&gt;&lt;/p&gt;

 &lt;/blockquote&gt;

&lt;p&gt;This is a &lt;strong&gt;GitHub Action&lt;/strong&gt; to deploy your static files to &lt;strong&gt;GitHub Pages&lt;/strong&gt;.
This deploy action can be combined simply and freely with &lt;a
 href="https://www.staticgen.com/"
 title="StaticGen"
 target="_blank" rel="noopener noreferrer"&gt;
 Static Site Generators
&lt;/a&gt;

(Hugo, mdBook, MkDocs, Gatsby, GitBook, etc.).&lt;/p&gt;
&lt;div class="highlight"&gt;&lt;pre tabindex="0" class="chroma"&gt;&lt;code class="language-yaml" data-lang="yaml"&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;- &lt;span class="nt"&gt;name&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt;&lt;span class="w"&gt; &lt;/span&gt;&lt;span class="l"&gt;Deploy&lt;/span&gt;&lt;span class="w"&gt;
&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;&lt;span class="w"&gt; &lt;/span&gt;&lt;span class="nt"&gt;uses&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt;&lt;span class="w"&gt; &lt;/span&gt;&lt;span class="l"&gt;peaceiris/actions-gh-pages@v3&lt;/span&gt;&lt;span class="w"&gt;
&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;&lt;span class="w"&gt; &lt;/span&gt;&lt;span class="nt"&gt;with&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt;&lt;span class="w"&gt;
&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;&lt;span class="w"&gt; &lt;/span&gt;&lt;span class="nt"&gt;deploy_key&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt;&lt;span class="w"&gt; &lt;/span&gt;&lt;span class="l"&gt;${{ secrets.ACTIONS_DEPLOY_KEY }}&lt;/span&gt;&lt;span class="w"&gt;
&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span class="line"&gt;&lt;span class="cl"&gt;&lt;span class="w"&gt; &lt;/span&gt;&lt;span class="nt"&gt;publish_dir&lt;/span&gt;&lt;span class="p"&gt;:&lt;/span&gt;&lt;span class="w"&gt; &lt;/span&gt;&lt;span class="l"&gt;./public&lt;/span&gt;&lt;span class="w"&gt;
&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/code&gt;&lt;/pre&gt;&lt;/div&gt;&lt;p&gt;The above example step will deploy &lt;code&gt;./public&lt;/code&gt; directory to &lt;code&gt;gh-pages&lt;/code&gt; branch.&lt;/p&gt;</description>
</item>
<item>
<title>Emoji Support</title>
<link>/posts/emoji-support/</link>
<pubDate>Mon, 30 Sep 2019 08:00:00 +0000</pubDate>
<guid>/posts/emoji-support/</guid>
<description>&lt;p&gt;Emoji can be enabled in a Hugo project in a number of ways.&lt;/p&gt;</description>
</item>
<item>
<title>Rich Content</title>
<link>/posts/rich-content/</link>
<pubDate>Sun, 29 Sep 2019 08:00:00 +0000</pubDate>
<guid>/posts/rich-content/</guid>
<description>&lt;h2 id="shortcodes" class="title is-3"&gt;Shortcodes&lt;/h2&gt;
&lt;p&gt;Hugo ships with several &lt;a
 href="https://gohugo.io/content-management/shortcodes/#use-hugo-s-built-in-shortcodes"
 
 target="_blank" rel="noopener noreferrer"&gt;
 Built-in Shortcodes
&lt;/a&gt;
 for rich content, along with a &lt;a
 href="https://gohugo.io/about/hugo-and-gdpr/"
 
 target="_blank" rel="noopener noreferrer"&gt;
 Privacy Config
&lt;/a&gt;
 and a set of Simple Shortcodes that enable static and no-JS versions of various social media embeds.&lt;/p&gt;</description>
</item>
<item>
<title>Markdown Syntax Guide</title>
<link>/posts/markdown-syntax/</link>
<pubDate>Wed, 25 Sep 2019 23:00:00 +0000</pubDate>
<guid>/posts/markdown-syntax/</guid>
<description>&lt;p&gt;This article offers a sample of basic Markdown syntax that can be used in Hugo content files, also it shows whether basic HTML elements are decorated with CSS in a Hugo theme.&lt;/p&gt;</description>
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