-- input --
#   Heading with odd spacing

````markdown
An outer markdown-tagged fence whose contents include a line that itself looks like a fence opener:
```markdown
inner content that must also stay exactly as written
```
and a trailing line that is deliberately far longer than eighty columns and must never be hard-wrapped.
````

Body text.
-- expected --
# Heading with odd spacing

````markdown
An outer markdown-tagged fence whose contents include a line that itself looks like a fence opener:
```markdown
inner content that must also stay exactly as written
```
and a trailing line that is deliberately far longer than eighty columns and must never be hard-wrapped.
````

Body text.
