pandoc/test/command/3512.md

```
% pandoc -f markdown-auto_identifiers
#hi
^D
<p>#hi</p>
```

```
% pandoc -f markdown-auto_identifiers-space_in_atx_header
#hi
^D
<h1>hi</h1>
```
Add `space_in_atx_header` extension. This is enabled by default in pandoc and GitHub markdown but not the other flavors. This requirse a space between the opening #'s and the header text in ATX headers (as CommonMark does but many other implementations do not). This is desirable to avoid falsely capturing things ilke #hashtag or #5 Closes #3512. 2017-03-20 21:51:29 +01:00			```
			`% pandoc -f markdown-auto_identifiers`
			`#hi`
			`^D`
			`<p>#hi</p>`
			```

			```
			`% pandoc -f markdown-auto_identifiers-space_in_atx_header`
			`#hi`
			`^D`
			`<h1>hi</h1>`
			```