Nested markup and orphan characters

[gzagatti]

Describe the bug

With the latest changes to in-line markup, I have noticed a bug related with nested markup and orphan characters.

Take the following expression:

zoo =and *boo and= bar* and *goo zar*

We end up with verbatim highlight on =and *boo and= and bold on * and * which is wrong since bar* does not start a bold markup.

This problem is particularly frequent with links like the following:

This is [[https://foobar/foo]] foo/

Which highlights as italic /foobar/foo]] foo/.

Steps to reproduce

1. Open a new org file.
2. Add the following:

foo =and *foo and= bar* and *foo bar*

Expected behavior

The correct behavior is to have verbatim highlight on =and *foo and= and bold on *foo bar*.

Emacs functionality

N/A

Minimal init.lua

N/A

Screenshots and recordings

No response

OS / Distro

Ubuntu 22.04

Neovim version/commit

0.8

Additional context

No response

[kristijanhusak]

Emacs itself doesn't really know how to handle some of these when link has some spaces:

But I guess spaces are just not a valid char in a link.

[gzagatti]

I think I managed to fix this issue with PR #431.

[kristijanhusak]

These issues should be fixed on latest master.