Before:
  unlet! b:mkd_known_filetypes
  unlet! b:mkd_included_filetypes
  unlet! g:vim_markdown_math

Given markdown;
a **b** c

Execute (bold):
  AssertNotEqual SyntaxOf('a'), 'htmlBold'
  AssertEqual SyntaxOf('b'), 'htmlBold'
  AssertNotEqual SyntaxOf('c'), 'htmlBold'

Given markdown;
a __b__ c

Execute (bold):
  AssertNotEqual SyntaxOf('a'), 'htmlBold'
  AssertEqual SyntaxOf('b'), 'htmlBold'
  AssertNotEqual SyntaxOf('c'), 'htmlBold'

Given markdown;
a *b* c

Execute (italic):
  AssertNotEqual SyntaxOf('a'), 'htmlItalic'
  AssertEqual SyntaxOf('b'), 'htmlItalic'
  AssertNotEqual SyntaxOf('c'), 'htmlItalic'

Given markdown;
a _b_ c

Execute (italic):
  AssertNotEqual SyntaxOf('a'), 'htmlItalic'
  AssertEqual SyntaxOf('b'), 'htmlItalic'
  AssertNotEqual SyntaxOf('c'), 'htmlItalic'

Given markdown;
_a_b_

Execute (italic text has underscores):
  AssertEqual SyntaxOf('a'), 'htmlItalic'
  AssertEqual SyntaxOf('b'), 'htmlItalic'

Given markdown;
a \*b\* c

Execute (not italic with escaped asterisks):
  AssertNotEqual SyntaxOf('a'), 'htmlItalic'
  AssertNotEqual SyntaxOf('b'), 'htmlItalic'
  AssertNotEqual SyntaxOf('c'), 'htmlItalic'

Given markdown;
a \_b\_ c

Execute (not italic with escaped underscores):
  AssertNotEqual SyntaxOf('a'), 'htmlItalic'
  AssertNotEqual SyntaxOf('b'), 'htmlItalic'
  AssertNotEqual SyntaxOf('c'), 'htmlItalic'

Given markdown;
a _b\_c_ d

Execute (italic with escaped underscores):
  AssertNotEqual SyntaxOf('a'), 'htmlItalic'
  AssertEqual SyntaxOf('b'), 'htmlItalic'
  AssertEqual SyntaxOf('c'), 'htmlItalic'
  AssertNotEqual SyntaxOf('d'), 'htmlItalic'

Given markdown;
a_b_c

Execute (not italic underscores within text):
  AssertNotEqual SyntaxOf('a'), 'htmlItalic'
  AssertNotEqual SyntaxOf('b'), 'htmlItalic'
  AssertNotEqual SyntaxOf('c'), 'htmlItalic'

Given markdown;
a *b\*c* d

Execute (italic with escaped asterisks):
  AssertNotEqual SyntaxOf('a'), 'htmlItalic'
  AssertEqual SyntaxOf('b'), 'htmlItalic'
  AssertEqual SyntaxOf('c'), 'htmlItalic'
  AssertNotEqual SyntaxOf('d'), 'htmlItalic'

Given markdown;
a __b\_\_c__ d

Execute (bold with escaped underscores):
  AssertNotEqual SyntaxOf('a'), 'htmlBold'
  AssertEqual SyntaxOf('b'), 'htmlBold'
  AssertEqual SyntaxOf('c'), 'htmlBold'
  AssertNotEqual SyntaxOf('d'), 'htmlBold'

Given markdown;
_a b
c_ d

Execute (italic with underscores in multiple lines):
  AssertEqual SyntaxOf('a'), 'htmlItalic'
  AssertEqual SyntaxOf('b'), 'htmlItalic'
  AssertEqual SyntaxOf('c'), 'htmlItalic'
  AssertNotEqual SyntaxOf('d'), 'htmlItalic'

Given markdown;
__a b
c__ d

Execute (bold with underscores in multiple lines):
  AssertEqual SyntaxOf('a'), 'htmlBold'
  AssertEqual SyntaxOf('b'), 'htmlBold'
  AssertEqual SyntaxOf('c'), 'htmlBold'
  AssertNotEqual SyntaxOf('d'), 'htmlBold'

Given markdown;
___a b
c___ d

Execute (bold italic with underscores in multiple lines):
  AssertEqual SyntaxOf('a'), 'htmlBoldItalic'
  AssertEqual SyntaxOf('b'), 'htmlBoldItalic'
  AssertEqual SyntaxOf('c'), 'htmlBoldItalic'
  AssertNotEqual SyntaxOf('d'), 'htmlBoldItalic'

Given markdown;
*a b
c* d

Execute (italic with asterisks in multiple lines):
  AssertEqual SyntaxOf('a'), 'htmlItalic'
  AssertEqual SyntaxOf('b'), 'htmlItalic'
  AssertEqual SyntaxOf('c'), 'htmlItalic'
  AssertNotEqual SyntaxOf('d'), 'htmlItalic'

Given markdown;
**a b
c** d

Execute (bold with asterisks in multiple lines):
  AssertEqual SyntaxOf('a'), 'htmlBold'
  AssertEqual SyntaxOf('b'), 'htmlBold'
  AssertEqual SyntaxOf('c'), 'htmlBold'
  AssertNotEqual SyntaxOf('d'), 'htmlBold'

Given markdown;
***a b
c*** d

Execute (bold italic with asterisks in multiple lines):
  AssertEqual SyntaxOf('a'), 'htmlBoldItalic'
  AssertEqual SyntaxOf('b'), 'htmlBoldItalic'
  AssertEqual SyntaxOf('c'), 'htmlBoldItalic'
  AssertNotEqual SyntaxOf('d'), 'htmlBoldItalic'

Given markdown;
*a

Execute (not italic with an asterisk):
  AssertNotEqual SyntaxOf('a'), 'htmlItalic'

Given markdown;
[__](a) b

Execute (not bold with double underscores):
  AssertNotEqual SyntaxOf('_'), 'htmlBold'
  AssertNotEqual SyntaxOf('a'), 'htmlBold'
  AssertNotEqual SyntaxOf('b'), 'htmlBold'

Given markdown;
_a_

Execute (conceal italic):
  if has('conceal')
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 1
    setlocal conceallevel=0
  endif

Execute (disable conceal):
  if has('conceal')
    let g:vim_markdown_conceal=0
    syn off | syn on
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 0
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 0

    let g:vim_markdown_conceal=1
    syn off | syn on
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 1

    setlocal conceallevel=0
    unlet g:vim_markdown_conceal
    syn off | syn on
  endif

Given markdown;
*a*

Execute (conceal italic):
  if has('conceal')
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 1
    setlocal conceallevel=0
  endif

Execute (disable conceal):
  if has('conceal')
    let g:vim_markdown_conceal=0
    syn off | syn on
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 0
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 0

    let g:vim_markdown_conceal=1
    syn off | syn on
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 1

    setlocal conceallevel=0
    unlet g:vim_markdown_conceal
    syn off | syn on
  endif

Given markdown;
__a__

Execute (conceal bold):
  if has('conceal')
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 1
    AssertEqual synconcealed(1, 3)[0], 0
    AssertEqual synconcealed(1, 4)[0], 1
    AssertEqual synconcealed(1, 5)[0], 1
    setlocal conceallevel=0
  endif

Execute (disable conceal):
  if has('conceal')
    let g:vim_markdown_conceal=0
    syn off | syn on
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 0
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 0
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 5)[0], 0

    let g:vim_markdown_conceal=1
    syn off | syn on
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 1
    AssertEqual synconcealed(1, 3)[0], 0
    AssertEqual synconcealed(1, 4)[0], 1
    AssertEqual synconcealed(1, 5)[0], 1

    setlocal conceallevel=0
    unlet g:vim_markdown_conceal
    syn off | syn on
  endif

Given markdown;
**a**

Execute (conceal bold):
  if has('conceal')
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 1
    AssertEqual synconcealed(1, 3)[0], 0
    AssertEqual synconcealed(1, 4)[0], 1
    AssertEqual synconcealed(1, 5)[0], 1
    setlocal conceallevel=0
  endif

Execute (disable conceal):
  if has('conceal')
    let g:vim_markdown_conceal=0
    syn off | syn on
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 0
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 0
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 5)[0], 0

    let g:vim_markdown_conceal=1
    syn off | syn on
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 1
    AssertEqual synconcealed(1, 3)[0], 0
    AssertEqual synconcealed(1, 4)[0], 1
    AssertEqual synconcealed(1, 5)[0], 1

    setlocal conceallevel=0
    unlet g:vim_markdown_conceal
    syn off | syn on
  endif

Given markdown;
___a___

Execute (conceal italic bold):
  if has('conceal')
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 1
    AssertEqual synconcealed(1, 3)[0], 1
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 5)[0], 1
    AssertEqual synconcealed(1, 6)[0], 1
    AssertEqual synconcealed(1, 7)[0], 1
    setlocal conceallevel=0
  endif

Execute (disable conceal):
  if has('conceal')
    let g:vim_markdown_conceal=0
    syn off | syn on
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 0
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 0
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 5)[0], 0
    AssertEqual synconcealed(1, 6)[0], 0
    AssertEqual synconcealed(1, 7)[0], 0

    let g:vim_markdown_conceal=1
    syn off | syn on
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 1
    AssertEqual synconcealed(1, 3)[0], 1
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 5)[0], 1
    AssertEqual synconcealed(1, 6)[0], 1
    AssertEqual synconcealed(1, 7)[0], 1

    setlocal conceallevel=0
    unlet g:vim_markdown_conceal
    syn off | syn on
  endif

Given markdown;
***a***

Execute (conceal italic bold):
  if has('conceal')
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 1
    AssertEqual synconcealed(1, 3)[0], 1
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 5)[0], 1
    AssertEqual synconcealed(1, 6)[0], 1
    AssertEqual synconcealed(1, 7)[0], 1
    setlocal conceallevel=0
  endif

Execute (disable conceal):
  if has('conceal')
    let g:vim_markdown_conceal=0
    syn off | syn on
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 0
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 0
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 5)[0], 0
    AssertEqual synconcealed(1, 6)[0], 0
    AssertEqual synconcealed(1, 7)[0], 0

    let g:vim_markdown_conceal=1
    syn off | syn on
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 1
    AssertEqual synconcealed(1, 3)[0], 1
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 5)[0], 1
    AssertEqual synconcealed(1, 6)[0], 1
    AssertEqual synconcealed(1, 7)[0], 1

    setlocal conceallevel=0
    unlet g:vim_markdown_conceal
    syn off | syn on
  endif

# Links

Given markdown;
[a](b)

Execute (link with title):
  AssertEqual SyntaxOf('a'), 'mkdLink'
  AssertEqual SyntaxOf('b'), 'mkdURL'

Given markdown;
[a
b](c)

Execute (link text with newline):
  AssertEqual SyntaxOf('a'), 'mkdLink'
  AssertEqual SyntaxOf('b'), 'mkdLink'
  AssertEqual SyntaxOf('c'), 'mkdURL'

Given markdown;
[a] b [c](d)

Execute (link text with bracket sections):
  AssertNotEqual SyntaxOf('a'), 'mkdLink'
  AssertNotEqual SyntaxOf('b'), 'mkdLink'
  AssertEqual SyntaxOf('c'), 'mkdLink'
  AssertEqual SyntaxOf('d'), 'mkdURL'

Given markdown;
[^a]: b

Execute (footnote is not link):
  AssertNotEqual SyntaxOf('a'), 'mkdLinkDef'

Given markdown;
(a)

(b)

Execute (parenthesis not in link):
  AssertNotEqual SyntaxOf('a'), 'mkdURL'
  AssertNotEqual SyntaxOf('b'), 'mkdURL'

Given markdown;
[a](b) c [d](e)

Execute (multiple links on a line):
  AssertNotEqual SyntaxOf('c'), 'mkdLink'
  AssertNotEqual SyntaxOf('c'), 'mkdURL'

Given markdown;
[a] (b)

Execute (space is not allowed between link text and parenthesis):
  AssertNotEqual SyntaxOf('a'), 'mkdLink'
  AssertNotEqual SyntaxOf('b'), 'mkdURL'

Given markdown;
[a](b)

Execute (conceal link):
  if has('conceal')
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 1
    AssertEqual synconcealed(1, 4)[0], 1
    AssertEqual synconcealed(1, 4)[0], 1
    AssertEqual synconcealed(1, 5)[0], 1
    AssertEqual synconcealed(1, 6)[0], 1
    setlocal conceallevel=0
  endif

Execute (disable conceal):
  if has('conceal')
    let g:vim_markdown_conceal=0
    syn off | syn on
    setlocal conceallevel=2
    AssertEqual synconcealed(1, 1)[0], 0
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 0
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 5)[0], 0
    AssertEqual synconcealed(1, 6)[0], 0

    let g:vim_markdown_conceal=1
    syn off | syn on
    AssertEqual synconcealed(1, 1)[0], 1
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 1
    AssertEqual synconcealed(1, 4)[0], 1
    AssertEqual synconcealed(1, 4)[0], 1
    AssertEqual synconcealed(1, 5)[0], 1
    AssertEqual synconcealed(1, 6)[0], 1

    setlocal conceallevel=0
    unlet g:vim_markdown_conceal
    syn off | syn on
  endif

# Autolinks

Given markdown;
a <http://b> c

Execute (autolink):
  AssertNotEqual SyntaxOf('a'), 'mkdInlineURL'
  AssertEqual SyntaxOf('<'), 'mkdDelimiter'
  AssertEqual SyntaxOf('b'), 'mkdInlineURL'
  AssertEqual SyntaxOf('>'), 'mkdDelimiter'
  AssertNotEqual SyntaxOf('c'), 'mkdInlineURL'

Given markdown;
http://12monkeys.foo

Execute (autolink with domain starting with a number):
  AssertEqual SyntaxOf('12monkeys'), 'mkdInlineURL'

Given markdown;
<HtTp://a>

Execute (autolink with scheme case is insensitive):
  AssertEqual SyntaxOf('a'), 'mkdInlineURL'

Given markdown;
<a>

Execute (autolink without scheme is not a link):
  AssertNotEqual SyntaxOf('a'), 'mkdInlineURL'

Given markdown;
< http://a >
<http://b c>
<http://d
e>

Execute (autolink with space is not a link):
  AssertNotEqual SyntaxOf('a'), 'mkdInlineURL'
  AssertNotEqual SyntaxOf('b'), 'mkdInlineURL'
  AssertNotEqual SyntaxOf('c'), 'mkdInlineURL'
  AssertNotEqual SyntaxOf('d'), 'mkdInlineURL'
  AssertNotEqual SyntaxOf('e'), 'mkdInlineURL'

Given markdown;
\<http://a>

Execute (autolinks can be backslash escaped):
  AssertNotEqual SyntaxOf('<'), 'mkdDelimiter'

Given markdown;
a (http://b.bb) c

Execute (autolink in parenthesis):
  AssertNotEqual SyntaxOf('a'), 'mkdInlineURL'
  AssertEqual SyntaxOf('('), 'mkdDelimiter'
  AssertEqual SyntaxOf('b'), 'mkdInlineURL'
  AssertEqual SyntaxOf(')'), 'mkdDelimiter'
  AssertNotEqual SyntaxOf('c'), 'mkdInlineURL'

Given markdown;
[![a](http://b)](http://c)

Execute (autolink in link text):
  AssertEqual SyntaxOf('!'), 'mkdDelimiter'
  AssertEqual SyntaxOf('a'), 'mkdLink'
  AssertEqual SyntaxOf('b'), 'mkdURL'
  AssertEqual SyntaxOf('c'), 'mkdURL'

Given markdown;
# [h1link](url)

## [h2link](url)

### [h3link](url)

#### [h4link](url)

##### [h5link](url)

###### [h6link](url)

[h1link_b](url)
===============

[h2link_b](url)
---------------

Execute (link in headers):
  AssertEqual SyntaxOf('h1link'), 'mkdLink'
  AssertEqual SyntaxOf('h2link'), 'mkdLink'
  AssertEqual SyntaxOf('h3link'), 'mkdLink'
  AssertEqual SyntaxOf('h4link'), 'mkdLink'
  AssertEqual SyntaxOf('h5link'), 'mkdLink'
  AssertEqual SyntaxOf('h6link'), 'mkdLink'
  AssertEqual SyntaxOf('h1link_b'), 'mkdLink'
  AssertEqual SyntaxOf('h2link_b'), 'mkdLink'

Given markdown;
# http://h1link.foo

## http://h2link.foo

### http://h3link.foo

#### http://h4link.foo

##### http://h5link.foo

###### http://h6link.foo

http://h1link_b.foo
===================

http://h2link_b.foo
-------------------

Execute (inline url in headers):
  AssertEqual SyntaxOf('h1link'), 'mkdInlineURL'
  AssertEqual SyntaxOf('h2link'), 'mkdInlineURL'
  AssertEqual SyntaxOf('h3link'), 'mkdInlineURL'
  AssertEqual SyntaxOf('h4link'), 'mkdInlineURL'
  AssertEqual SyntaxOf('h5link'), 'mkdInlineURL'
  AssertEqual SyntaxOf('h6link'), 'mkdInlineURL'
  AssertEqual SyntaxOf('h1link_b'), 'mkdInlineURL'
  AssertEqual SyntaxOf('h2link_b'), 'mkdInlineURL'

Given markdown;
> [a](b)
> http://foo.bar

Execute (link in blockquote):
  AssertEqual SyntaxOf('a'), 'mkdLink'
  AssertEqual SyntaxOf('foo'), 'mkdInlineURL'

Given markdown;
[https://domain.tld](https://domain.com) not_a_link

Execute (link with url title):
  AssertEqual SyntaxOf('https://domain.tld'), 'mkdInlineURL'
  AssertEqual SyntaxOf('https://domain.com'), 'mkdInlineURL'
  AssertNotEqual SyntaxOf('not_a_link'), 'mkdInlineURL'

# Code Blocks

Given markdown;
~~~
code
~~~

Execute (code blocks can be fenced with tildes):
  AssertEqual SyntaxOf('c'), 'mkdCode'

Given markdown;
~~~~
code
~~~~~

Execute (code blocks can be fenced with tildes longer than 3):
  AssertEqual SyntaxOf('c'), 'mkdCode'

Given markdown;
````
code
`````

Execute (code blocks can be fenced with backticks longer than 3):
  AssertEqual SyntaxOf('c'), 'mkdCode'

Given markdown;
~~~ruby
code
~~~

Execute (code blocks can have a language specifier):
  AssertEqual SyntaxOf('c'), 'mkdCode'

Given markdown;
```c++
code
```

text

Execute (code blocks can be fenced with backticks and a language specifier):
  AssertEqual SyntaxOf('code'), 'mkdCode'
  AssertNotEqual SyntaxOf('text'), 'mkdCode'

# Indent Code Blocks

Given markdown;
a

    b
    c

Execute (indent code blocks):
  AssertNotEqual SyntaxOf('a'), 'mkdCode'
  AssertEqual SyntaxOf('b'), 'mkdCode'
  AssertEqual SyntaxOf('c'), 'mkdCode'

Given markdown;
# a

b

    c

Execute (indent code blocks after header):
  AssertNotEqual SyntaxOf('a'), 'mkdCode'
  AssertNotEqual SyntaxOf('b'), 'mkdCode'
  AssertEqual SyntaxOf('c'), 'mkdCode'

Given markdown;
-   a

    b

        c

Execute (indent code blocks after list):
  AssertNotEqual SyntaxOf('a'), 'mkdCode'
  AssertNotEqual SyntaxOf('b'), 'mkdCode'
  AssertEqual SyntaxOf('c'), 'mkdCode'

Given markdown;
    a
    b

Execute (indent code block at beginning of file):
  AssertEqual SyntaxOf('a'), 'mkdCode'
  AssertEqual SyntaxOf('b'), 'mkdCode'

Given markdown;
```c++
#include <iostream>
code
```

```ruby
def a
end
```

Execute (fenced code block syntax with a language specifier):
  let b:func = Markdown_GetFunc('vim-markdown/ftplugin/markdown.vim', 'MarkdownRefreshSyntax')
  call b:func(0)
  AssertEqual SyntaxOf('include'), 'cInclude'
  AssertEqual SyntaxOf('code'), 'mkdSnippetCPP'
  AssertEqual SyntaxOf('def'), 'rubyDefine'

Given markdown;
``` c++
#include <iostream>
code
```

```  vim
let g:a = 1
```

```	ruby
def a
end
```

```
ruby
class B
end
```

Execute (fenced code block syntax with a language specifier after whitespace):
  let b:func = Markdown_GetFunc('vim-markdown/ftplugin/markdown.vim', 'MarkdownRefreshSyntax')
  call b:func(0)
  AssertEqual SyntaxOf('include'), 'cInclude'
  AssertEqual SyntaxOf('code'), 'mkdSnippetCPP'
  AssertEqual SyntaxOf('g:a'), 'vimVar'
  AssertEqual SyntaxOf('def'), 'rubyDefine'
  AssertNotEqual SyntaxOf('class'), 'rubyClass'

Given markdown;
```vim
let g:a = 1
```

```viml
let g:b = 1
```

Execute (fenced code block syntax with alias language specifier):
  let b:func = Markdown_GetFunc('vim-markdown/ftplugin/markdown.vim', 'MarkdownRefreshSyntax')
  call b:func(0)
  AssertEqual SyntaxOf('g:a'), 'vimVar'
  AssertEqual SyntaxOf('g:b'), 'vimVar'

Given markdown;
```csharp
var s = "foo";
```

Execute (fenced code block languages setting):
  let g:vim_markdown_fenced_languages = ['csharp=cs']
  source ../ftplugin/markdown.vim
  let b:func = Markdown_GetFunc('vim-markdown/ftplugin/markdown.vim', 'MarkdownRefreshSyntax')
  call b:func(0)
  AssertEqual SyntaxOf('foo'), 'csString'
  unlet g:vim_markdown_fenced_languages

Given markdown;
```vim
let g:a = 1
```

Execute (fenced code block includes language syntax with reopening same buffer):
  let b:func = Markdown_GetFunc('vim-markdown/ftplugin/markdown.vim', 'MarkdownRefreshSyntax')
  call b:func(0)
  split
  quit
  edit
  set filetype=markdown
  execute "normal! i```vim\<cr>let g:a = 1\<cr>```"
  call b:func(1)
  AssertEqual SyntaxOf('g:a'), 'vimVar'

Given markdown;
```a+b-
code
```

Execute (fenced code block syntax with an unknown language specifier):
  let b:func = Markdown_GetFunc('vim-markdown/ftplugin/markdown.vim', 'MarkdownRefreshSyntax')
  call b:func(0)
  AssertEqual SyntaxOf('code'), 'mkdSnippetA_B_'

Given markdown;
```
=
a
-
```

Execute (first = or - in fenced code block is not setex headers):
  AssertEqual SyntaxOf('='), 'mkdCode'
  AssertEqual SyntaxOf('-'), 'mkdCode'

Given markdown;
``` {style=""}
a
```

Execute (fenced code block with extended info strings):
  AssertEqual SyntaxOf('a'), 'mkdCode'

# Code Blocks in pre and code tag

Given markdown;
<pre>
a
</pre>

Execute (code block in pre tag):
  AssertEqual SyntaxOf('a'), 'mkdCode'

Given markdown;
<code>
a
</code>

Execute (code block in code tag):
  AssertEqual SyntaxOf('a'), 'mkdCode'

Given markdown;
\<pre\>
a
\</pre\>

Execute (not code block in escaped pre tag):
  AssertNotEqual SyntaxOf('a'), 'mkdCode'

Given markdown;
\<code\>
a
\</code\>

Execute (not code block in escaped code tag):
  AssertNotEqual SyntaxOf('a'), 'mkdCode'

# Code quotes

Given markdown;
`a`

Execute (code in code quotes):
  AssertEqual SyntaxOf('a'), 'mkdCode'

Given markdown;
`a\` b `c\` d

Execute (code quotes not escaped ending with backslash):
  AssertEqual SyntaxOf('a\'), 'mkdCode'
  AssertNotEqual SyntaxOf('b'), 'mkdCode'
  AssertEqual SyntaxOf('c\'), 'mkdCode'
  AssertNotEqual SyntaxOf('d'), 'mkdCode'

Given markdown;
``a\`` b ``c`\`1`` d

Execute (double code quotes not escaped ending with backslash):
  AssertEqual SyntaxOf('a\'), 'mkdCode'
  AssertNotEqual SyntaxOf('b'), 'mkdCode'
  AssertEqual SyntaxOf('c`\\`1'), 'mkdCode'
  AssertNotEqual SyntaxOf('d'), 'mkdCode'

# Math

Given markdown;
a $x$ b
c $$y$$ d
\$e\$
\$\$f\$\$

Execute (math):
  AssertNotEqual SyntaxOf('x')[0:2], 'tex'
  AssertNotEqual SyntaxOf('y')[0:2], 'tex'
  let g:vim_markdown_math=1
  syn off | syn on
  AssertNotEqual SyntaxOf('a')[0:2], 'tex'
  AssertNotEqual SyntaxOf('b')[0:2], 'tex'
  AssertNotEqual SyntaxOf('c')[0:2], 'tex'
  AssertNotEqual SyntaxOf('d')[0:2], 'tex'
  AssertNotEqual SyntaxOf('e')[0:2], 'tex'
  AssertNotEqual SyntaxOf('f')[0:2], 'tex'
  AssertEqual SyntaxOf('x')[0:2], 'tex'
  AssertEqual SyntaxOf('y')[0:2], 'tex'
  let g:vim_markdown_math=0
  syn off | syn on
  AssertNotEqual SyntaxOf('x')[0:2], 'tex'
  AssertNotEqual SyntaxOf('y')[0:2], 'tex'

Given markdown;
a

$
b
$

c

Execute (multiline math):
  let g:vim_markdown_math=1
  syn off | syn on
  AssertNotEqual SyntaxOf('a')[0:2], 'tex'
  AssertEqual SyntaxOf('b')[0:2], 'tex'
  AssertNotEqual SyntaxOf('c')[0:2], 'tex'

Given markdown;
$ \sqrt{a}{b} $
$$ \frac{a}{b} $$

Execute (math tex highlighting):
  let g:vim_markdown_math=0
  syn off | syn on
  AssertNotEqual SyntaxOf('sqrt'), 'texStatement'
  AssertNotEqual SyntaxOf('frac'), 'texStatement'
  let g:vim_markdown_math=1
  syn off | syn on
  AssertEqual SyntaxOf('sqrt'), 'texStatement'
  AssertEqual SyntaxOf('frac'), 'texStatement'

Given markdown;
$a b[$ c

Execute (math ends with $):
  let g:vim_markdown_math=1
  syn off | syn on
  AssertEqual SyntaxOf('a')[0:2], 'tex'
  AssertEqual SyntaxOf('b')[0:2], 'tex'
  AssertNotEqual SyntaxOf('c')[0:2], 'tex'

Given markdown;
$$a b[$$ c

Execute (math ends with $$):
  let g:vim_markdown_math=1
  syn off | syn on
  AssertEqual SyntaxOf('a')[0:2], 'tex'
  AssertEqual SyntaxOf('b')[0:2], 'tex'
  AssertNotEqual SyntaxOf('c')[0:2], 'tex'

Given markdown;
$(0 \le 1)$

Execute (math conceal in $):
  if has('conceal')
    setlocal conceallevel=2
    let g:vim_markdown_math=1
    syn off | syn on
    AssertEqual synconcealed(1, 1)[0], 1, '$'
    AssertEqual synconcealed(1, 2)[0], 0
    AssertEqual synconcealed(1, 3)[0], 0
    AssertEqual synconcealed(1, 4)[0], 0
    AssertEqual synconcealed(1, 5)[0], 1, '\le'
    AssertEqual synconcealed(1, 6)[0], 1
    AssertEqual synconcealed(1, 7)[0], 1
    AssertEqual synconcealed(1, 8)[0], 0
    AssertEqual synconcealed(1, 9)[0], 0
    AssertEqual synconcealed(1, 10)[0], 0
    AssertEqual synconcealed(1, 11)[0], 1, '$'
    setlocal conceallevel=0
  endif

Given markdown;
$$
\omega
0 \le 1
$$

Execute (math conceal in $$):
  if has('conceal')
    setlocal conceallevel=2
    let g:vim_markdown_math=1
    syn off | syn on
    AssertEqual synconcealed(1, 1)[0], 1, '$$'
    AssertEqual synconcealed(2, 1)[0], 1, '\omega'
    AssertEqual synconcealed(3, 1)[0], 0, '0'
    AssertEqual synconcealed(3, 3)[0], 1, '\le'
    AssertEqual synconcealed(3, 7)[0], 0, '1'
    AssertEqual synconcealed(4, 1)[0], 1, '$$'
    setlocal conceallevel=0
  endif

# YAML frontmatter

Given markdown;
---
a: b
---

Execute (YAML frontmatter is controlled by the option):
  AssertNotEqual SyntaxOf('a')[0:3], 'yaml'
  let g:vim_markdown_frontmatter=1
  syn off | syn on
  AssertEqual SyntaxOf('a')[0:3], 'yaml'
  let g:vim_markdown_frontmatter=0
  syn off | syn on
  AssertNotEqual SyntaxOf('a')[0:3], 'yaml'

Given markdown;

---
a: b
---

Execute (YAML frontmatter only works if it's the first thing in the file):
  let g:vim_markdown_frontmatter=1
  syn off | syn on
  AssertNotEqual SyntaxOf('a')[0:3], 'yaml'

Given markdown;
---
a: b
---

---

Execute (rules are not mistaken by YAML frontmatter delimiters):
  let g:vim_markdown_frontmatter=1
  syn off | syn on
  AssertEqual SyntaxAt(5, 1), 'mkdRule'
  unlet g:vim_markdown_frontmatter

# TOML frontmatter

Given markdown;
+++
a = "b"
+++

Execute (TOML frontmatter is controlled by the option):
  syn off | syn on
  AssertNotEqual SyntaxOf('b'), 'tomlString'
  let g:vim_markdown_toml_frontmatter=1
  syn off | syn on
  AssertEqual SyntaxOf('b'), 'tomlString'
  let g:vim_markdown_toml_frontmatter=0
  syn off | syn on
  AssertNotEqual SyntaxOf('b'), 'tomlString'

Given markdown;

+++
a = "b"
+++

Execute (TOML frontmatter only works if it's the first thing in the file):
  let g:vim_markdown_toml_frontmatter=1
  syn off | syn on
  AssertNotEqual SyntaxOf('b'), 'tomlString'
  unlet g:vim_markdown_toml_frontmatter

# JSON frontmatter

Given markdown;
{
  "a": "b"
}

Execute (JSON frontmatter is controlled by the option):
  syn off | syn on
  AssertNotEqual SyntaxOf('a'), 'jsonKeyword'
  let g:vim_markdown_json_frontmatter=1
  syn off | syn on
  AssertEqual SyntaxOf('a'), 'jsonKeyword'
  let g:vim_markdown_json_frontmatter=0
  syn off | syn on
  AssertNotEqual SyntaxOf('a'), 'jsonKeyword'

Given markdown;

{
  "a": "b"
}

Execute (JSON frontmatter only works if it's the first thing in the file):
  let g:vim_markdown_json_frontmatter=1
  syn off | syn on
  AssertNotEqual SyntaxOf('a'), 'jsonKeyword'
  unlet g:vim_markdown_json_frontmatter

# Header

Given markdown;
# #a
ccc

## #b
ddd

Execute (header title starts with #):
  AssertEqual SyntaxOf('a'), 'htmlH1'
  AssertEqual SyntaxOf('b'), 'htmlH2'

Given markdown;
# h1 space

#h1 nospace

#  h1 2 spaces

# h1 trailing hash #

## h2 space

##h2 nospace

## h2 trailing hash ##

### h3 space

###h3 nospace

### h3 trailing hash ###

#### h4

##### h5

###### h6

Execute (atx headers):
  AssertEqual SyntaxOf(' h1 space'), 'htmlH1'
  AssertEqual SyntaxOf('h1 nospace'), 'htmlH1'
  AssertEqual SyntaxOf('  h1 2 spaces'), 'htmlH1'
  AssertEqual SyntaxOf(' h1 trailing hash '), 'htmlH1'
  AssertEqual SyntaxOf(' h2 space'), 'htmlH2'
  AssertEqual SyntaxOf('h2 nospace'), 'htmlH2'
  AssertEqual SyntaxOf(' h2 trailing hash '), 'htmlH2'
  AssertEqual SyntaxOf(' h3 space'), 'htmlH3'
  AssertEqual SyntaxOf('h3 nospace'), 'htmlH3'
  AssertEqual SyntaxOf(' h3 trailing hash '), 'htmlH3'
  AssertEqual SyntaxOf(' h4'), 'htmlH4'
  AssertEqual SyntaxOf(' h5'), 'htmlH5'
  AssertEqual SyntaxOf(' h6'), 'htmlH6'

Given markdown;
# h1 before h2

## h2 between h1s

# h1 after h2

Execute (atx headers relative positions):
  AssertEqual SyntaxOf(' h1 before h2'), 'htmlH1'
  AssertEqual SyntaxOf(' h2 between h1s'), 'htmlH2'
  AssertEqual SyntaxOf(' h1 after h2'), 'htmlH1'

Given markdown;
setex h1
========

setex h2
--------

setex h1 single punctuation
=

setex h1 punctuation longer than header
================================

Execute (setex headers):
  AssertEqual SyntaxOf('setex h1'), 'htmlH1'
  AssertEqual SyntaxOf('^========$'), 'htmlH1'
  AssertEqual SyntaxOf('setex h2'), 'htmlH2'
  AssertEqual SyntaxOf('--------'), 'htmlH2'
  AssertEqual SyntaxOf('setex h1 single punctuation'), 'htmlH1'
  AssertEqual SyntaxOf('^=$'), 'htmlH1'
  AssertEqual SyntaxOf('setex h1 punctuation longer than header'), 'htmlH1'
  AssertEqual SyntaxOf('^================================$'), 'htmlH1'

Given markdown;
- not Setex
- because list

Execute (prevent list vs Setex confusion):
  AssertNotEqual SyntaxOf('- not Setex'), 'htmlH2'
  AssertNotEqual SyntaxOf('- becuase list'), 'htmlH2'

Given markdown;
setex h1 before atx
===================

## atx h2

### atx h3

# atx h1

setex h2
------------------

### atx h3 2

Execute (mixed atx and setex headers):
  AssertEqual SyntaxOf('setex h1 before atx'), 'htmlH1'
  AssertEqual SyntaxOf('==================='), 'htmlH1'
  AssertEqual SyntaxOf(' atx h2'), 'htmlH2'
  AssertEqual SyntaxOf(' atx h3'), 'htmlH3'
  AssertEqual SyntaxOf(' atx h1'), 'htmlH1'
  AssertEqual SyntaxOf('setex h2'), 'htmlH2'
  AssertEqual SyntaxOf('------------------'), 'htmlH2'

# List

Given markdown;
- a & b
1. c > d

Execute (& and > are not marked as htmlError in lists):
  AssertEqual SyntaxOf('-'), 'mkdListItem'
  AssertEqual SyntaxOf('1.'), 'mkdListItem'
  AssertNotEqual SyntaxOf('&'), 'htmlError'
  AssertNotEqual SyntaxOf('>'), 'htmlError'

Given markdown;
1. a  
2. b

Execute (list after line break):
  AssertEqual SyntaxOf('1'), 'mkdListItem'
  AssertEqual SyntaxOf('2'), 'mkdListItem'

# HTML

Given markdown;
a

<p>b</p>

- <span>c</span>

Execute (HTML tag in text):
  AssertEqual SyntaxOf('p'), 'htmlTagName'
  AssertEqual SyntaxOf('<p>'), 'htmlTag'
  AssertEqual SyntaxOf('</p>'), 'htmlEndTag'
  AssertEqual SyntaxOf('span'), 'htmlTagName'
  AssertEqual SyntaxOf('<span>'), 'htmlTag'
  AssertEqual SyntaxOf('</span>'), 'htmlEndTag'