Multi-line alerts

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>> [!NOTE]
*content*
>>>

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p><em>content</em></p>
</div>

> [!NOTE]
> *content*

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" multiline="true">
    <paragraph>
      <emph>
        <text xml:space="preserve">content</text>
      </emph>
    </paragraph>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>> [!TIP]
Optional information to help a user be more successful.
>>>

<div class="markdown-alert markdown-alert-tip">
<p class="markdown-alert-title">Tip</p>
<p>Optional information to help a user be more successful.</p>
</div>

> [!TIP]
> Optional information to help a user be more successful.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="tip" multiline="true">
    <paragraph>
      <text xml:space="preserve">Optional information to help a user be more successful.</text>
    </paragraph>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>> [!IMPORTANT]
Crucial information necessary for users to succeed.
>>>

<div class="markdown-alert markdown-alert-important">
<p class="markdown-alert-title">Important</p>
<p>Crucial information necessary for users to succeed.</p>
</div>

> [!IMPORTANT]
> Crucial information necessary for users to succeed.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="important" multiline="true">
    <paragraph>
      <text xml:space="preserve">Crucial information necessary for users to succeed.</text>
    </paragraph>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>> [!WARNING]
Critical content demanding immediate user attention due to potential risks.
>>>

<div class="markdown-alert markdown-alert-warning">
<p class="markdown-alert-title">Warning</p>
<p>Critical content demanding immediate user attention due to potential risks.</p>
</div>

> [!WARNING]
> Critical content demanding immediate user attention due to potential risks.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="warning" multiline="true">
    <paragraph>
      <text xml:space="preserve">Critical content demanding immediate user attention due to potential risks.</text>
    </paragraph>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>> [!CAUTION]
Negative potential consequences of an action.
>>>

<div class="markdown-alert markdown-alert-caution">
<p class="markdown-alert-title">Caution</p>
<p>Negative potential consequences of an action.</p>
</div>

> [!CAUTION]
> Negative potential consequences of an action.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="caution" multiline="true">
    <paragraph>
      <text xml:space="preserve">Negative potential consequences of an action.</text>
    </paragraph>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>> [!NOTE] Pay attention
Highlights information that users should take into account, even when skimming.
>>>

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Pay attention</p>
<p>Highlights information that users should take into account, even when skimming.</p>
</div>

> [!NOTE] Pay attention
> Highlights information that users should take into account, even when skimming.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" title="Pay attention" multiline="true">
    <paragraph>
      <text xml:space="preserve">Highlights information that users should take into account, even when skimming.</text>
    </paragraph>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>> [!NOTE]
### heading

-----------
>>>

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<h3>heading</h3>
<hr />
</div>

> [!NOTE]
> ### heading
> 
> -----

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" multiline="true">
    <heading level="3">
      <text xml:space="preserve">heading</text>
    </heading>
    <thematic_break />
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>>>>> [!NOTE]
  hello world
>>>>>>>>>>>
normal

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>hello world</p>
</div>
<p>normal</p>

> [!NOTE]
> hello world

normal

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" multiline="true">
    <paragraph>
      <text xml:space="preserve">hello world</text>
    </paragraph>
  </alert>
  <paragraph>
    <text xml:space="preserve">normal</text>
  </paragraph>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>>>> [!NOTE]
>>>> [!CAUTION]
foo
>>>>
>>>>>

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<div class="markdown-alert markdown-alert-caution">
<p class="markdown-alert-title">Caution</p>
<p>foo</p>
</div>
</div>

> [!NOTE]
> > [!CAUTION]
> > foo

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" multiline="true">
    <alert type="caution" multiline="true">
      <paragraph>
        <text xml:space="preserve">foo</text>
      </paragraph>
    </alert>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>>> [!NOTE]
this block is closed with 5 markers below

>>>>>

auto-closed blocks
>>>>>
>>>>

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>this block is closed with 5 markers below</p>
</div>
<p>auto-closed blocks</p>
<blockquote>
<blockquote>
</blockquote>
</blockquote>

> [!NOTE]
> this block is closed with 5 markers below

auto-closed blocks

> >

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" multiline="true">
    <paragraph>
      <text xml:space="preserve">this block is closed with 5 markers below</text>
    </paragraph>
  </alert>
  <paragraph>
    <text xml:space="preserve">auto-closed blocks</text>
  </paragraph>
  <multiline_block_quote>
    <multiline_block_quote />
  </multiline_block_quote>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

   >>>> [!NOTE]
   first-level blockquote
    >>> [!CAUTION]
    second-level blockquote
    >>>
   >>>>
   regular paragraph

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>first-level blockquote</p>
<div class="markdown-alert markdown-alert-caution">
<p class="markdown-alert-title">Caution</p>
<p>second-level blockquote</p>
</div>
</div>
<p>regular paragraph</p>

> [!NOTE]
> first-level blockquote
> 
> > [!CAUTION]
> > second-level blockquote

regular paragraph

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" multiline="true">
    <paragraph>
      <text xml:space="preserve">first-level blockquote</text>
    </paragraph>
    <alert type="caution" multiline="true">
      <paragraph>
        <text xml:space="preserve">second-level blockquote</text>
      </paragraph>
    </alert>
  </alert>
  <paragraph>
    <text xml:space="preserve">regular paragraph</text>
  </paragraph>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

    >>>
    content
    >>>

<pre class="syntax-highlighting"><code><span class="text plain">&gt;&gt;&gt;
content
&gt;&gt;&gt;
</span></code></pre>

    >>>
    content
    >>>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <code_block xml:space="preserve">&gt;&gt;&gt;
content
&gt;&gt;&gt;
</code_block>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

  >>> [!NOTE]
      code block
  >>>

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<pre class="syntax-highlighting"><code><span class="text plain">code block
</span></code></pre>
</div>

> [!NOTE]
> 
> 
>     code block

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" multiline="true">
    <code_block xml:space="preserve">code block
</code_block>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

   >>>> [!NOTE]
   content
    >>> [!CAUTION]
        code block
    >>>
   >>>>

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>content</p>
<div class="markdown-alert markdown-alert-caution">
<p class="markdown-alert-title">Caution</p>
<pre class="syntax-highlighting"><code><span class="text plain">code block
</span></code></pre>
</div>
</div>

> [!NOTE]
> content
> 
> > [!CAUTION]
> > 
> > 
> >     code block

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" multiline="true">
    <paragraph>
      <text xml:space="preserve">content</text>
    </paragraph>
    <alert type="caution" multiline="true">
      <code_block xml:space="preserve">code block
</code_block>
    </alert>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>> [!NOTE]
foo
>>> arg=123

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>foo</p>
<blockquote>
<blockquote>
<blockquote>
<p>arg=123</p>
</blockquote>
</blockquote>
</blockquote>
</div>

> [!NOTE]
> foo
> 
> > > > arg=123

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" multiline="true">
    <paragraph>
      <text xml:space="preserve">foo</text>
    </paragraph>
    <block_quote>
      <block_quote>
        <block_quote>
          <paragraph>
            <text xml:space="preserve">arg=123</text>
          </paragraph>
        </block_quote>
      </block_quote>
    </block_quote>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

>>> [!NOTE]
foo

<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>foo</p>
</div>

> [!NOTE]
> foo

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <alert type="note" multiline="true">
    <paragraph>
      <text xml:space="preserve">foo</text>
    </paragraph>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

blah blah
>>> [!NOTE]
content
>>>

<p>blah blah</p>
<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>content</p>
</div>

blah blah

> [!NOTE]
> content

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <paragraph>
    <text xml:space="preserve">blah blah</text>
  </paragraph>
  <alert type="note" multiline="true">
    <paragraph>
      <text xml:space="preserve">content</text>
    </paragraph>
  </alert>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

 -  >>> [!NOTE]
    - foo
    >>>

<ul>
<li>
<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<ul>
<li>foo</li>
</ul>
</div>
</li>
</ul>

- > [!NOTE]
  > - foo

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <list type="bullet" tight="true">
    <item>
      <alert type="note" multiline="true">
        <list type="bullet" tight="true">
          <item>
            <paragraph>
              <text xml:space="preserve">foo</text>
            </paragraph>
          </item>
        </list>
      </alert>
    </item>
  </list>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

> >>> [!NOTE]
> foo
>> bar
> baz
> >>>

<blockquote>
<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>foo</p>
<blockquote>
<p>bar
baz</p>
</blockquote>
</div>
</blockquote>

> > [!NOTE]
> > foo
> > 
> > > bar
> > > baz

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <block_quote>
    <alert type="note" multiline="true">
      <paragraph>
        <text xml:space="preserve">foo</text>
      </paragraph>
      <block_quote>
        <paragraph>
          <text xml:space="preserve">bar</text>
          <softbreak />
          <text xml:space="preserve">baz</text>
        </paragraph>
      </block_quote>
    </alert>
  </block_quote>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

 -  >>> [!NOTE]
    foo
    bar
    >>>

 -  >>> [!NOTE]
    foo
    bar
    >>>

<ul>
<li>
<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>foo
bar</p>
</div>
</li>
<li>
<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>foo
bar</p>
</div>
</li>
</ul>

- > [!NOTE]
  > foo
  > bar

- > [!NOTE]
  > foo
  > bar

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <list type="bullet" tight="false">
    <item>
      <alert type="note" multiline="true">
        <paragraph>
          <text xml:space="preserve">foo</text>
          <softbreak />
          <text xml:space="preserve">bar</text>
        </paragraph>
      </alert>
    </item>
    <item>
      <alert type="note" multiline="true">
        <paragraph>
          <text xml:space="preserve">foo</text>
          <softbreak />
          <text xml:space="preserve">bar</text>
        </paragraph>
      </alert>
    </item>
  </list>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

```txt
# Code
>>> [!NOTE]
# Code
>>>
# Code
```

<pre class="syntax-highlighting"><code class="language-txt"><span class="text plain"># Code
&gt;&gt;&gt; [!NOTE]
# Code
&gt;&gt;&gt;
# Code
</span></code></pre>

```txt
# Code
>>> [!NOTE]
# Code
>>>
# Code
```

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <code_block info="txt" xml:space="preserve"># Code
&gt;&gt;&gt; [!NOTE]
# Code
&gt;&gt;&gt;
# Code
</code_block>
</document>

$ comrak -e alerts -e multiline-block-quotes -t commonmark -t xml

Some text
>>> [!NOTE]
A quote
>>>
Some other text

<p>Some text</p>
<div class="markdown-alert markdown-alert-note">
<p class="markdown-alert-title">Note</p>
<p>A quote</p>
</div>
<p>Some other text</p>

Some text

> [!NOTE]
> A quote

Some other text

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE document SYSTEM "CommonMark.dtd">
<document xmlns="http://commonmark.org/xml/1.0">
  <paragraph>
    <text xml:space="preserve">Some text</text>
  </paragraph>
  <alert type="note" multiline="true">
    <paragraph>
      <text xml:space="preserve">A quote</text>
    </paragraph>
  </alert>
  <paragraph>
    <text xml:space="preserve">Some other text</text>
  </paragraph>
</document>

Multi-line Alerts

heading