markdown.md

Markdown

Table of Contents

GitLab Flavored Markdown

• Newlines
• Multiple underscores in words
• URL auto-linking
• Multiline Blockquote
• Code and Syntax Highlighting
• Inline Diff
• Emoji
• Special GitLab references
• Task Lists
• Videos

Standard Markdown

• Headers
• Emphasis
• Lists
• Links
• Images
• Blockquotes
• Inline HTML
• Horizontal Rule
• Line Breaks
• Tables

Wiki-Specific Markdown

• Wiki - Direct page link
• Wiki - Direct file link
• Wiki - Hierarchical link
• Wiki - Root link

References

GitLab Flavored Markdown (GFM)

Note: Not all of the GitLab-specific extensions to Markdown that are described in this document currently work on our documentation website.

For the best result, we encourage you to check this document out as rendered by GitLab: markdown.md

GitLab uses the Redcarpet Ruby library for Markdown processing.

GitLab uses "GitLab Flavored Markdown" (GFM). It extends the standard Markdown in a few significant ways to add some useful functionality. It was inspired by GitHub Flavored Markdown.

You can use GFM in the following areas:

• comments
• issues
• merge requests
• milestones
• snippets (the snippet must be named with a .md extension)
• wiki pages
• markdown documents inside the repository

You can also use other rich text files in GitLab. You might have to install a dependency to do so. Please see the github-markup gem readme for more information.

Newlines

If this is not rendered correctly, see https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/markdown/markdown.md#newlines

GFM honors the markdown specification in how paragraphs and line breaks are handled.

A paragraph is simply one or more consecutive lines of text, separated by one or more blank lines. Line-breaks, or softreturns, are rendered if you end a line with two or more spaces:

Roses are red [followed by two or more spaces]
Violets are blue

Sugar is sweet

Roses are red
Violets are blue

Sugar is sweet

Multiple underscores in words

If this is not rendered correctly, see https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/markdown/markdown.md#multiple-underscores-in-words

It is not reasonable to italicize just part of a word, especially when you're dealing with code and names that often appear with multiple underscores. Therefore, GFM ignores multiple underscores in words:

perform_complicated_task

do_this_and_do_that_and_another_thing

perform_complicated_task

do_this_and_do_that_and_another_thing

URL auto-linking

If this is not rendered correctly, see https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/markdown/markdown.md#url-auto-linking

GFM will autolink almost any URL you copy and paste into your text:

* https://www.google.com
* https://google.com/
* ftp://ftp.us.debian.org/debian/
* smb://foo/bar/baz
* irc://irc.freenode.net/gitlab
* http://localhost:3000

• https://www.google.com
• https://google.com/
• ftp://ftp.us.debian.org/debian/
• smb://foo/bar/baz
• irc://irc.freenode.net/gitlab
• http://localhost:3000

Multiline Blockquote

If this is not rendered correctly, see https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/markdown/markdown.md#multiline-blockquote

On top of standard Markdown blockquotes, which require prepending > to quoted lines, GFM supports multiline blockquotes fenced by >>>:

>>>
If you paste a message from somewhere else

that

spans

multiple lines,

you can quote that without having to manually prepend `>` to every line!
>>>

If you paste a message from somewhere else

that

spans

multiple lines,

you can quote that without having to manually prepend > to every line!

Code and Syntax Highlighting

If this is not rendered correctly, see https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/markdown/markdown.md#code-and-syntax-highlighting

GitLab uses the Rouge Ruby library for syntax highlighting. For a list of supported languages visit the Rouge website.

Blocks of code are either fenced by lines with three back-ticks ```, or are indented with four spaces. Only the fenced code blocks support syntax highlighting:

Inline `code` has `back-ticks around` it.

Inline code has back-ticks around it.

Example:

```javascript
var s = "JavaScript syntax highlighting";
alert(s);
```

```python
def function():
    #indenting works just fine in the fenced code block
    s = "Python syntax highlighting"
    print s
```

```ruby
require 'redcarpet'
markdown = Redcarpet.new("Hello World!")
puts markdown.to_html
```

```
No language indicated, so no syntax highlighting.
s = "There is no highlighting for this."
But let's throw in a <b>tag</b>.
```

becomes:

var s = "JavaScript syntax highlighting";
alert(s);

def function():
    #indenting works just fine in the fenced code block
    s = "Python syntax highlighting"
    print s

require 'redcarpet'
markdown = Redcarpet.new("Hello World!")
puts markdown.to_html

No language indicated, so no syntax highlighting.
s = "There is no highlighting for this."
But let's throw in a <b>tag</b>.

Inline Diff

If this is not rendered correctly, see https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/markdown/markdown.md#inline-diff

With inline diffs tags you can display additions or deletions .

The wrapping tags can be either curly braces or square brackets additions or deletions .

However the wrapping tags cannot be mixed as such:

• {+ additions +]
• [+ additions +}
• {- deletions -]
• [- deletions -}

Emoji

If this is not rendered correctly, see https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/markdown/markdown.md#emoji

Sometimes you want to :monkey: around a bit and add some :star2: to your :speech_balloon:. Well we have a gift for you:

:zap: You can use emoji anywhere GFM is supported. :v:

You can use it to point out a :bug: or warn about :speak_no_evil: patches. And if someone improves your really :snail: code, send them some :birthday:. People will :heart: you for that.

If you are new to this, don't be :fearful:. You can easily join the emoji :family:. All you need to do is to look up on the supported codes.

Consult the [Emoji Cheat Sheet](http://emoji.codes) for a list of all supported emoji codes. :thumbsup:

Sometimes you want to 🐒 around a bit and add some 🌟 to your 💬. Well we have a gift for you:

⚡ You can use emoji anywhere GFM is supported. ✌️

You can use it to point out a 🐛 or warn about 🙊 patches. And if someone improves your really 🐌 code, send them some 🎂. People will ❤️ you for that.

If you are new to this, don't be 😨. You can easily join the emoji 👪. All you need to do is to look up on the supported codes.

Consult the Emoji Cheat Sheet for a list of all supported emoji codes. 👍

Special GitLab References

GFM recognizes special references.

You can easily reference e.g. an issue, a commit, a team member or even the whole team within a project.

GFM will turn that reference into a link so you can navigate between them easily.

GFM will recognize the following:

input	references
@user_name	specific user
@group_name	specific group
@all	entire team
#123	issue
!123	merge request
$123	snippet
~123	label by ID
~bug	one-word label by name
~"feature request"	multi-word label by name
%123	milestone by ID
%v1.23	one-word milestone by name
%"release candidate"	multi-word milestone by name
9ba12248	specific commit
9ba12248...b19a04f5	commit range comparison
[README](doc/README)	repository file references

GFM also recognizes certain cross-project references:

input	references
namespace/project#123	issue
namespace/project!123	merge request
namespace/project%123	milestone
namespace/project$123	snippet
namespace/project@9ba12248	specific commit
namespace/project@9ba12248...b19a04f5	commit range comparison
namespace/project~"Some label"	issues with given label

Task Lists

If this is not rendered correctly, see https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/markdown/markdown.md#task-lists

You can add task lists to issues, merge requests and comments. To create a task list, add a specially-formatted Markdown list, like so:

- [x] Completed task
- [ ] Incomplete task
    - [ ] Sub-task 1
    - [x] Sub-task 2
    - [ ] Sub-task 3

• Completed task
• Incomplete task
  • Sub-task 1
  • Sub-task 2
  • Sub-task 3

Task lists can only be created in descriptions, not in titles. Task item state can be managed by editing the description's Markdown or by toggling the rendered check boxes.

Videos

If this is not rendered correctly, see https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/markdown/markdown.md#videos

Image tags with a video extension are automatically converted to a video player.

The valid video extensions are .mp4, .m4v, .mov, .webm, and .ogv.

Here's a sample video:

![Sample Video](img/markdown_video.mp4)

Here's a sample video:

Sample Video

Standard Markdown

Headers

# H1
## H2
### H3
#### H4
##### H5
###### H6

Alternatively, for H1 and H2, an underline-ish style:

Alt-H1
======

Alt-H2
------

H1

H2

H3

H4

H5

H6

Alternatively, for H1 and H2, an underline-ish style:

Alt-H1

Alt-H2

Header IDs and links

All Markdown-rendered headers automatically get IDs, except in comments.

On hover a link to those IDs becomes visible to make it easier to copy the link to the header to give it to someone else.

The IDs are generated from the content of the header according to the following rules:

1. All text is converted to lowercase
2. All non-word text (e.g., punctuation, HTML) is removed
3. All spaces are converted to hyphens
4. Two or more hyphens in a row are converted to one
5. If a header with the same ID has already been generated, a unique incrementing number is appended, starting at 1.

For example:

# This header has spaces in it
## This header has a :thumbsup: in it
# This header has Unicode in it: 한글
## This header has spaces in it
### This header has spaces in it

Would generate the following link IDs:

1. this-header-has-spaces-in-it
2. this-header-has-a-in-it
3. this-header-has-unicode-in-it-한글
4. this-header-has-spaces-in-it
5. this-header-has-spaces-in-it-1

Note that the Emoji processing happens before the header IDs are generated, so the Emoji is converted to an image which then gets removed from the ID.

Emphasis

Emphasis, aka italics, with *asterisks* or _underscores_.

Strong emphasis, aka bold, with **asterisks** or __underscores__.

Combined emphasis with **asterisks and _underscores_**.

Strikethrough uses two tildes. ~~Scratch this.~~

Emphasis, aka italics, with asterisks or underscores.

Strong emphasis, aka bold, with asterisks or underscores.

Combined emphasis with asterisks and underscores.

Strikethrough uses two tildes. Scratch this.

Lists

1. First ordered list item
2. Another item
  * Unordered sub-list.
1. Actual numbers don't matter, just that it's a number
  1. Ordered sub-list
4. And another item.

* Unordered list can use asterisks
- Or minuses
+ Or pluses

1. First ordered list item
2. Another item

• Unordered sub-list.

1. Actual numbers don't matter, just that it's a number
2. Ordered sub-list
3. And another item.

• Unordered list can use asterisks

• Or minuses

• Or pluses

If a list item contains multiple paragraphs, each subsequent paragraph should be indented with four spaces.

1.  First ordered list item

    Second paragraph of first item.
2.  Another item

1. First ordered list item

   Second paragraph of first item.

2. Another item

If the second paragraph isn't indented with four spaces, the second list item will be incorrectly labeled as 1.

1. First ordered list item

   Second paragraph of first item.
2. Another item

1. First ordered list item

   Second paragraph of first item.

2. Another item

Links

There are two ways to create links, inline-style and reference-style.

[I'm an inline-style link](https://www.google.com)

[I'm a reference-style link][Arbitrary case-insensitive reference text]

[I'm a relative reference to a repository file](LICENSE)

[You can use numbers for reference-style link definitions][1]

Or leave it empty and use the [link text itself][]

Some text to show that the reference links can follow later.

[arbitrary case-insensitive reference text]: https://www.mozilla.org
[1]: http://slashdot.org
[link text itself]: https://www.reddit.com

I'm an inline-style link

I'm a reference-style link

I'm a relative reference to a repository file¹

You can use numbers for reference-style link definitions

Or leave it empty and use the link text itself

Some text to show that the reference links can follow later.

Note