pandoc-3.10: test/command/10385.md

````
% pandoc -t asciidoc
C+ C++ C+++ `++`

`` ` `` \`hi\`

`hi\there`` ok`

```
++`
```
^D
C{plus} C{plus}{plus} C{plus}{plus}{plus} `{plus}{plus}`

`++`++` ++`++hi++`++

`hi++\++there++``++ ok`

....
++`
....
````