Some basic markdown:

Hello World

Spaces in front of lines:

Spaces in front of lines should be preserved as new lines in the output

and spaces within lines should be preserved

Tables:

Hello	World
Hello	World
Hello	World

Code blocks:

code block
with multiple lines

Blockquotes:

This is a blockquote with multiple lines

Horizontal rules:

Fenced code blocks with language:

function hello() {
&nbsp;&nbsp;return "world";
}

Task lists:

Nested lists:

Mixed content (edge cases):

Regular text with line breaks

Heading

More text

Table	Row
Data	Here