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debian-mirror-gitlab/spec/fixtures/markdown.md.erb
Pirate Praveen 3a6a82fa42 New upstream version 12.4.6
2019-12-21 20:55:43 +05:30

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# GitLab Markdown
This document is intended to be a comprehensive example of custom GitLab
Markdown usage. It will be parsed and then tested for accuracy. Let's get
started.
## Markdown
GitLab uses [Commonmark](https://git.io/fhDag) to parse all Markdown into
HTML.
It has some special features. Let's try 'em out!
### No Intra Emphasis
This string should have no emphasis: foo_bar_baz
### Tables
| Header | Row | Example |
| :------: | ---: | :------ |
| Foo | Bar | **Baz** |
### Fenced Code Blocks
```c
#include<stdio.h>
main()
{
printf("Hello World");
}
```
```python
print "Hello, World!"
```
### Strikethrough
This text says this, ~~and this text doesn't~~.
### Superscript
This is my 1<sup>(st)</sup> time using superscript in Markdown. Now this is my
2<sup>(nd)</sup>.
Redcarpet supports this superscript syntax ( x^2 ).
### Subscript
This (C<sub>6</sub>H<sub>12</sub>O<sub>6</sub>) is an example of subscripts in Markdown.
### Next step
After the Markdown has been turned into HTML, it gets passed through...
## HTML::Pipeline
### SanitizationFilter
GitLab uses <a href="http://git.io/vfW8a">HTML::Pipeline::SanitizationFilter</a>
to sanitize the generated HTML, stripping dangerous or unwanted tags.
Its default whitelist is pretty permissive. Check it:
<b>b tag</b> and <em>em tag</em>.
<code>code tag</code>
Press <kbd>s</kbd> to search.
<strike>Emoji</strike> Plain old images! <img src="http://www.emoji-cheat-sheet.com/graphics/emojis/smile.png" width="20" height="20" />
Here comes a line break:
<br />
And a horizontal rule:
<hr />
As permissive as it is, we've allowed even more stuff:
<span>span tag</span>
<details>
<summary>Summary lines are collapsible:</summary>
Hiding the details until expanded.
</details>
<a href="#" rel="bookmark">This is a link with a defined rel attribute, which should be removed</a>
<a href="javascript:alert('Hi')">This is a link trying to be sneaky. It gets its link removed entirely.</a>
### Escaping
The problem with SanitizationFilter is that it can be too aggressive.
| Input | Expected | Actual |
| ----------- | ---------------- | --------- |
| `1 < 3 & 5` | 1 &lt; 3 &amp; 5 | 1 < 3 & 5 |
| `<foo>` | &lt;foo&gt; | <foo> |
### Edge Cases
Markdown should be usable inside a link. Let's try!
- [_text_](#link-emphasis)
- [**text**](#link-strong)
- [`text`](#link-code)
### RelativeLinkFilter
Linking to a file relative to this project's repository should work.
[Relative Link](doc/README.md)
![Relative Image](app/assets/images/touch-icon-ipad.png)
### EmojiFilter
Because life would be :zzz: without Emoji, right? :rocket:
Get ready for the Emoji :bomb: : :+1: :-1: :ok_hand: :wave: :v: :raised_hand: :muscle:
### TableOfContentsFilter
All headers in this document should be linkable. Try it.
### AutolinkFilter
These are all plain text that should get turned into links:
- http://about.gitlab.com/
- https://google.com/
- ftp://ftp.us.debian.org/debian/
- smb://foo/bar/baz
- irc://irc.freenode.net/git
- http://localhost:3000
But it shouldn't autolink text inside certain tags:
- <code>http://code.gitlab.com/</code>
- <a>http://a.gitlab.com/</a>
- <kbd>http://kbd.gitlab.com/</kbd>
### ExternalLinkFilter
External links get a `rel="nofollow noreferrer"` and `target="_blank"` attributes:
- [Google](https://google.com/)
- [GitLab Root](<%= Gitlab.config.gitlab.url %>)
### Reference Filters (e.g., <%= issue.to_reference %>)
References should be parseable even inside _<%= merge_request.to_reference %>_ emphasis.
#### UserReferenceFilter
- All: @all
- User: <%= user.to_reference %>
- Group: <%= group.to_reference %>
- Ignores invalid: <%= User.reference_prefix %>fake_user
- Ignored in code: `<%= user.to_reference %>`
- Ignored in links: [Link to <%= user.to_reference %>](#user-link)
- Link to user by reference: [User](<%= user.to_reference %>)
#### IssueReferenceFilter
- Issue: <%= issue.to_reference %>
- Issue in another project: <%= xissue.to_reference(project) %>
- Ignored in code: `<%= issue.to_reference %>`
- Ignored in links: [Link to <%= issue.to_reference %>](#issue-link)
- Issue by URL: <%= urls.project_issue_url(issue.project, issue) %>
- Link to issue by reference: [Issue](<%= issue.to_reference %>)
- Link to issue by URL: [Issue](<%= urls.project_issue_url(issue.project, issue) %>)
#### MergeRequestReferenceFilter
- Merge request: <%= merge_request.to_reference %>
- Merge request in another project: <%= xmerge_request.to_reference(project) %>
- Ignored in code: `<%= merge_request.to_reference %>`
- Ignored in links: [Link to <%= merge_request.to_reference %>](#merge-request-link)
- Merge request by URL: <%= urls.project_merge_request_url(merge_request.project, merge_request) %>
- Link to merge request by reference: [Merge request](<%= merge_request.to_reference %>)
- Link to merge request by URL: [Merge request](<%= urls.project_merge_request_url(merge_request.project, merge_request) %>)
#### SnippetReferenceFilter
- Snippet: <%= snippet.to_reference %>
- Snippet in another project: <%= xsnippet.to_reference(project) %>
- Ignored in code: `<%= snippet.to_reference %>`
- Ignored in links: [Link to <%= snippet.to_reference %>](#snippet-link)
- Snippet by URL: <%= urls.project_snippet_url(snippet.project, snippet) %>
- Link to snippet by reference: [Snippet](<%= snippet.to_reference %>)
- Link to snippet by URL: [Snippet](<%= urls.project_snippet_url(snippet.project, snippet) %>)
#### CommitRangeReferenceFilter
- Range: <%= commit_range.to_reference %>
- Range in another project: <%= xcommit_range.to_reference(project) %>
- Ignored in code: `<%= commit_range.to_reference %>`
- Ignored in links: [Link to <%= commit_range.to_reference %>](#commit-range-link)
- Range by URL: <%= urls.project_compare_url(commit_range.project, commit_range.to_param) %>
- Link to range by reference: [Range](<%= commit_range.to_reference %>)
- Link to range by URL: [Range](<%= urls.project_compare_url(commit_range.project, commit_range.to_param) %>)
#### CommitReferenceFilter
- Commit: <%= commit.to_reference %>
- Commit in another project: <%= xcommit.to_reference(project) %>
- Ignored in code: `<%= commit.to_reference %>`
- Ignored in links: [Link to <%= commit.to_reference %>](#commit-link)
- Commit by URL: <%= urls.project_commit_url(commit.project, commit) %>
- Link to commit by reference: [Commit](<%= commit.to_reference %>)
- Link to commit by URL: [Commit](<%= urls.project_commit_url(commit.project, commit) %>)
#### LabelReferenceFilter
- Label by ID: <%= simple_label.to_reference %>
- Label by name: <%= Label.reference_prefix %><%= simple_label.name %>
- Label by name in quotes: <%= label.to_reference(format: :name) %>
- Ignored in code: `<%= simple_label.to_reference %>`
- Ignored in links: [Link to <%= simple_label.to_reference %>](#label-link)
- Link to label by reference: [Label](<%= label.to_reference %>)
#### MilestoneReferenceFilter
- Milestone by ID: <%= simple_milestone.to_reference %>
- Milestone by name: <%= Milestone.reference_prefix %><%= simple_milestone.name %>
- Milestone by name in quotes: <%= milestone.to_reference(format: :name) %>
- Milestone in another project: <%= xmilestone.to_reference(project) %>
- Ignored in code: `<%= simple_milestone.to_reference %>`
- Ignored in links: [Link to <%= simple_milestone.to_reference %>](#milestone-link)
- Milestone by URL: <%= urls.milestone_url(milestone) %>
- Link to milestone by URL: [Milestone](<%= milestone.to_reference %>)
- Group milestone by name: <%= Milestone.reference_prefix %><%= group_milestone.name %>
- Group milestone by name in quotes: <%= group_milestone.to_reference(format: :name) %>
- Group milestone by URL is ignore: <%= urls.milestone_url(group_milestone) %>
### Task Lists
- [ ] Incomplete task 1
- [x] Complete task 1
- [ ] Incomplete task 2
- [ ] Incomplete sub-task 1
- [ ] Incomplete sub-task 2
- [x] Complete sub-task 1
- [X] Complete task 2
#### Gollum Tags
- [[linked-resource]]
- [[link-text|linked-resource]]
- [[http://example.com]]
- [[link-text|http://example.com/pdfs/gollum.pdf]]
- [[images/example.jpg]]
- [[http://example.com/images/example.jpg]]
### Inline Diffs
With inline diffs tags you can display {+ additions +} or [- deletions -].
The wrapping tags can be either curly braces or square brackets [+ additions +] or {- deletions -}.
Examples:
```
- {+ additions +}
- [+ additions +]
- {- deletions -}
- [- deletions -]
```
However the wrapping tags cannot be mixed as such:
```
- {+ additions +]
- [+ additions +}
- {- deletions -]
- [- deletions -}
```
### Videos
![My Video](/assets/videos/gitlab-demo.mp4)
### Audio
![My Audio Clip](/assets/audio/gitlab-demo.wav)
### Colors
`#F00`
`#F00A`
`#FF0000`
`#FF0000AA`
`RGB(0,255,0)`
`RGB(0%,100%,0%)`
`RGBA(0,255,0,0.7)`
`HSL(540,70%,50%)`
`HSLA(540,70%,50%,0.7)`
### Mermaid
> If this is not rendered correctly, see
https://gitlab.com/gitlab-org/gitlab-foss/blob/master/doc/user/markdown.md#mermaid
It is possible to generate diagrams and flowcharts from text using [Mermaid][mermaid].
In order to generate a diagram or flowchart, you should write your text inside the `mermaid` block.
Example:
```mermaid
graph TD;
A-->B;
A-->C;
B-->D;
C-->D;
```
Becomes:
```mermaid
graph TD;
A-->B;
A-->C;
B-->D;
C-->D;
```
For details see the [Mermaid official page][mermaid].
[mermaid]: https://mermaidjs.github.io/ "Mermaid website"
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