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# Supporting Basic Dark Mode
2023-03-07
The default `barf` site generator now supports basic dark mode functionality. This has been achieved by including the standard `color-scheme` meta tag in the core `header.html` file:
```
<meta name="color-scheme" content="dark light">
```
This change also ships with some minor updates to the default `blockquote` design. You can see an example below:
> This is a really *cool* blockquote
## Minor Caveat
Unfortunately, Safari still has minor `ahref` / link color issue when defaulting to browser dark mode. If this is a problem for your own build of `barf`, take a look at a [solution I wrote about here](https://bt.ht/safari-default-dark-mode/).
Personally, I can't be bothered to add that extra code to this project. The Safari team needs to get their shit together and fix such a simple bug. Plus, you shouldn't be using Safari anyway - it's proprietary garbage.

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# Running `barf` on MacOS
2023-01-18
The `barf` project was built on Linux and was catered towards Linux users. The core of the project will remain focused on Linux/GNU tools, but that doesn't mean MacOS needs to be left out in the cold.
There are some very minor changes you'll need to make in the main `barf` script if you plan to run it on MacOS.
## Download Packages
This walkthrough assumes that you already have [homebrew](https://brew.sh/) installed on your machine.
You will need to install the GNU versions of both `date` and `sed` in order to avoid breaking things when `barf` tries to build.
brew install coreutils
brew install gnu-sed
## The Script Tweaks
Now open the main `barf` file in your project and replace all instances of `sed` with `gsed`.
Then change the following variable:
published_date=$(date -d $basic_date +%FT%TZ)
to this:
published_date=$(gdate -d $basic_date +%FT%TZ)
After that everything should work perfectly fine. There is probably a cleaner way to do this, but I like to keep things simple.

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# Markdown Examples in barf
2023-01-05
This following was lifted from [https://github.com/karlb/smu](https://github.com/karlb/smu)
`smu` Syntax
============
smu was started as a rewrite of
[markdown](http://daringfireball.net/projects/markdown/) but became something
more lightweight and consistent. It differs from [CommonMark](https://commonmark.org/) in the following ways:
* No support for _reference style links_
* Stricter indentation rules for lists
* Lists don't end paragraphs by themselves (blank line needed)
* Horizontal rules (`<hr>`) must use `- - -` as syntax
* Code fences have stricter syntax
Patches that increase the CommonMark compatibility are welcome as long as they don't increase the code complexity significantly.
This project is a fork of the [original smu](https://github.com/gottox/smu) by
[Enno Boland (gottox)](https://eboland.de). The main differences to the
original smu are:
* Support for code fences
* Improved [CommonMark](https://commonmark.org/) compatibility. E.g.
* Code blocks need four spaces indentation instead of three
* Skip empty lines at end of code blocks
* Ignore single spaces around code spans
* Keep HTML comments in output
* Improved spec compliance for lists
* Nesting code block in blockquotes works
* "Empty" lines in lists behave identically, no matter how much whitespace they contain
* No backslash escapes in code blocks
* Use first number as start number for ordered lists
* Added a simple test suite to check for compliance and avoid regressions
Inline patterns
---------------
There are several patterns you can use to highlight your text:
* Emphasis
* Surround your text with `*` or `_` to get *emphasised* text:
This *is* cool.
This _is_ cool, too.
* Surround your text with `**` or `__` to get **strong** text:
This **is** cool.
This __is__ cool, too.
* Surround your text with `***` or `___` to get ***strong and emphasised*** text:
This ***is*** cool.
This ___is___ cool, too.
* But this example won't work as expected:
***Hello** you*
This is a wontfix bug because it would make the source too complex.
Use this instead:
***Hello*** *you*
* inline Code
You can produce inline code by surrounding it with backticks.
Use `rm -rf /` if you're a N00b.
Use ``rm -rf /`` if you're a N00b.
Use ```rm -rf /``` if you're a N00b.
Double and triple backticks can be used if the code itself contains backticks.
Titles
------
Creating titles in smu is very easy. There are two different syntax styles. The
first is underlining with at least three characters:
Heading
=======
Topic
-----
This is very intuitive and self explaining. The resulting sourcecode looks like
this:
<h1>Heading</h1>
<h2>Topic</h2>
Use the following prefixes if you don't like underlining:
# h1
## h2
### h3
#### h4
##### h5
###### h6
Links
-----
The simplest way to define a link is with simple `<>`.
<http://s01.de>
You can do the same for E-Mail addresses:
<yourname@s01.de>
If you want to define a label for the url, you have to use a different syntax
[smu - simple mark up](http://s01.de/~gottox/index.cgi/proj_smu)
The resulting HTML-Code
<a href="http://s01.de/~gottox/index.cgi/proj_smu">smu - simple mark up</a></p>
Lists
-----
Defining lists is very straightforward:
* Item 1
* Item 2
* Item 3
Result:
<ul>
<li>Item 1</li>
<li>Item 2</li>
<li>Item 3</li>
</ul>
Defining ordered lists is also very easy:
1. Item 1
2. Item 2
3. Item 3
Only the first number in a list is meaningful. All following list items are
continously counted. If you want a list starting at 2, you could write:
2. Item 1
2. Item 2
2. Item 3
and get the following HTML which will render with the numbers 2, 3, 4:
<ol start="2">
<li>Item 1</li>
<li>Item 2</li>
<li>Item 3</li>
</ol>
Code & Blockquote
-----------------
Use the `> ` as a line prefix for defining blockquotes. Blockquotes are
interpreted as well. This makes it possible to embed links, headings and even
other quotes into a quote:
> Hello
> This is a quote with a [link](http://s01.de/~gottox)
Result:
<blockquote><p>
Hello
This is a quote with a <a href="http://s01.de/~gottox">link</a></p>
</blockquote>
You can define a code block with a leading Tab or with __4__ leading spaces
this.is(code)
this.is(code, too)
Result:
<pre><code>this.is(code)</code></pre>
<pre><code>this.is(code, too)
</code></pre>
Please note that you can't use HTML or smu syntax in a code block.
Another way to write code blocks is to use code fences:
```json
{"some": "code"}
```
This has two advantages:
* The optional language identifier will be turned into a `language-` class name
* You can keep the original indentation which helps when doing copy & paste
Tables
------
Tables can be generated with the following syntax:
| Heading1 | Heading2 |
| -------- | -------- |
| Cell 1 | Cell2 |
Aligning the columns make the input nicer to read, but is not necessary to get
correct table output. You could just write
| Heading1 | Heading2 |
| --- | --- |
| Cell 1 | Cell2 |
To align the content of table cells, use `|:--|` for left, `|--:|` for right
and `|:--:|` for centered alignment in the row which separates the header from
the table body.
| Heading1 | Heading2 | Heading3 |
| :------- | :------: | -------: |
| Left | Center | Right |
Other interesting stuff
-----------------------
* to insert a horizontal rule simple add `- - -` into an empty line:
Hello
- - -
Hello2
Result:
<p>
Hello
<hr />
Hello2</p>
* Any ASCII punctuation character may escaped by precedeing them with a
backslash to avoid them being interpreted:
!"#$%&'()*+,-./:;<=>?@[]^_`{|}~\
* To force a linebreak simple add two spaces to the end of the line:
No linebreak
here.
But here is
one.
embed HTML
----------
You can include arbitrary HTML code in your documents. The HTML will be
passed through to the resulting document without modification. This is a good
way to work around features that are missing in smu. If you don't want this
behaviour, use the `-n` flag when executing smu to stricly escape the HTML
tags.