Redmine

In markdown formatting, pre-block by ``` including # derives incorrect wiki editable-sections.

Example:

# H1

## H2

```
## pre-block
```

### H3

Editing section "H2":

## H2

```

and editing section "H3":

## pre-block
```

### H3

As above, # in pre-block is treated as markdown header.

NOTE pre-block by ~~~ does right results.

# H1

## H2

~~~
## pre-block
~~~

### H3

Editing "H2":

## H2

~~~
## pre-block
~~~

### H3

and editing "H3":

### H3

I attached a fix patch.