Infinite loop when an invalid callout list follows a list item

[cawalch]

const asciidoctor = require('asciidoctor')()
asciidoctor.convert(Buffer.from('103a3a0a393e0901', 'hex'))

Version 2.0.3

Found with jsfuzz

[mojavelinux]

This causes Asciidoctor to hang as well. Here's the UTF-8 string to reproduce:

a::\n0>\tb

Looks like a dlist parsing error related to #2888.

[mojavelinux]

Yep, same exact problem. We made a change to the syntax rules, but forgot to update one of the matchers.

[mojavelinux]

The problem occurs when an old-style callout list item follows another list item. Here's another example:

* foo
1> bar

It also happens for this case:

* foo
<.> bar

All part of the same problem.

[ggrossetie]

Thanks for your report @cawalch!
Is it worth to run jsfuzz as part of the CI on Travis?

@mojavelinux Do you reproduce this issue in Ruby?

[mojavelinux]

Yep, I can reproduce it using exactly the scenario the NOTE in the code warns about.

Is it worth to run jsfuzz as part of the CI on Travis?

It certainly couldn't hurt.