Add line numbers to code samples in preview

[ingosimonis]

Description

Hi, I am often using code samples, using the notation shown below with the linenums-flat set.

Using coderay, I get line numbers for these parts in the HTML when compiling the asciidoc, but I cannot see any line numbers for the code in the Atom-preview window. Is there anything I can do?

Thanks a lot,
Ingo

• Atom version: 1.28.2
• OS: MacOS 10.13.6
• asciidoc-preview version: 2.12.1
• language-asciidoc version: 1.11.0

Syntax example

[source,java,linenums]
----
class MyClass {
}
----