Hard line breaks in block AsciiMath are not preserved

[mojavelinux]

AsciiMath blocks require special line handling. You can find the logic here: https://github.com/asciidoctor/asciidoctor/blob/dd843d59b1e49f29d68386bfdf0438ce11b42577/lib/asciidoctor/converter/html5.rb#L697

The rules are as follows:

1. Two lines separated by only a newline character become a single line (the current behavior)
2. A line that ends with \ should become a hard line break
3. A double line break (and any additional line breaks) should be preserved (effectively separating the equations).

2 & 3 are not honored.

See asciidoctor/asciidoctor#2497 (comment) for the specification and examples.

[SpyrosRoum]

Hey do you think this might be something easy for someone who doesn't know ruby to implement?
I really like asciidoctor so far and you have already helped me so I'd like to give back!
Learning Ruby is not in my todo list but I already know python and Rust so maybe I can hack something together based on the logic you linked

[christopherball]

+1 for supporting hard line breaks in native AsciiMath syntax. This is a major pain for my tooling right now, as I ended up going with the approach of translating /r's into separate `` chunks, which means I can't save off a single SVG since they're considered separate blocks. Any ETA on getting a fully supported line break in place?

[mojavelinux]

@SpyrosRoum This seems relatively straightforward to implement. I'd be happy to mentor you if you need assistance.

[mcp292]

@SpyrosRoum @mojavelinux Thank you both for dedicating your time to this. @mojavelinux Thank you for being so welcoming and helpful.

Has any progress been made on this front? I ran into this on:

$ asciidoctor-pdf -v
----
Asciidoctor PDF 2.3.4 using Asciidoctor 2.0.18 [https://asciidoctor.org]
Runtime Environment (ruby 3.0.4p208 (2022-04-12 revision 3fa771dded) [x86_64-linux]) (lc:UTF-8 fs:UTF-8 in:UTF-8 ex:UTF-8)

Edit:
I'm also having this problem when using :stem: latexmath.

[mojavelinux]

I'm also having this problem when using :stem: latexmath.

It seems this problem is not limited to AsciiMath.