doghoney/softwareengineering

GFM extension

tables

terms
1. header row
  - top row
2. delimiter row
  |------|------|

use

basic

| name | age |  
| ---- | --- |  
| junho | 21 |

using (:)

| name | age |  
| :-: | ---------: |  
| junho | 21 |

escaping (|)
```
| f\|oo |
| ----- |  
| b`\|` az |  
```
| -> |
`\|` -> <code>|<code>
break condition

table is broken at the first empty line, or beginning of another block-level structure
precautions

The header row must match the delimiter row in the number of cells.
```
| abc | def |  
| --- |  
| bar |  
```
- this is treated as paragraph
exception
- fewer than header row:
  - empty cells are inserted.
- greater than header row:
  - the excess is ignored
- no rows
  - no <tbody> is generated in HTML output

task list items

term
1. task list items
  - check box

use

basic
```
- [ ] walk dog   
- [x] do homework  
```

nested

- [x] today homework  
  - [ ] math  
  - [ ] english  
- [ ] take a walk

strikethrough

term
1. strikethrough
  ~~[Text]~~
use
- basic
  
  ~~Hi~~ Hello, World!
caution

new paragraph will cause strikethrough parsing to cease
```
This ~~ has a  
new paragraph~~.  
```

Autolinks

term
1. Autolinks
  -automatically recognize and make into link
URL

http will be inserted automatically
1. vaild domain
  
  www.naver.com
2. zero or more non-space non-< characters may follow
  
  Visit www.commonmark.org/help for more information.
3. Trailing punctuation (specifically, ?, !, ., ,, :, *, _, and ~) will not be considered
  
  Visit www.commonmark.org.
- only "www.commonmark.org" is considered as link
1. autolink ends in )
  
  www.google.com/search?q=Markup+(business)))
- automatically consider as "www.google.com/search?q=Markup+(business)"
1. autolink ends in a semicolon(;)
  
  www.google.com/search?q=commonmark&hl;
- exclude entitiy reference (after &)
- automatically consider as "www.google.com/search?q=commonmark"
1. '<' immediately ends an autolink
  
  www.commonmark.org/he<lp
- automatically consider as "www.commonmark.org/he"
1. http://, https://
  
  http://commonmark.org
  https://commonmark.org
email

1. One ore more characters which are alphanumeric, or ., -, _, or +.
2. An @ symbol.
3. One or more characters which are alphanumeric, or - or _, separated by periods (.).
4. There must be at least one period. The last character must not be one of - or _.
5. + can occur before the @, but not after.
6. ., -, and _ can occur on both sides of the @, but only . may occur at the end of the email address, in which case it will not be considered part of the address:
- basic
```
foo@bar.baz  
```

Disallowed Raw HTML

GFM enables the tagfilter extention But, some HTML tag is not allowed

<title>
<textarea>
<style>
<xmp>
<iframe>
<noembed>
<noframes>
<script>
<plaintext>
```
<strong> <title> <style> <em>

<blockquote>
  <xmp> is disallowed.  <XMP> is also disallowed.
</blockquote>
```
<p><strong> <title> <style> <em></p>
<blockquote>
<xmp> is disallowed. <XMP> is also disallowed.
</blockquote>