[Bug]: Attempting to delete prefix moves snippet lines up to prefix

[zolrath]

Bug Description

When deleting a prefix with dd, the prefix line is deleted but the prefix count is not changed. The first line of the snippet instead moves up to the prefix section.

Relevant Screenshot

Before deleting a prefix:

After deleting a prefix:

To Reproduce

Create a snippet with multiple prefixes and delete one of the prefixes with dd

neovim version

NVIM v0.9.5

Make sure you have done the following

• [X] I have updated to the latest version of the plugin.
• [X] I have read the plugin's FAQ.

[chrisgrieser]

Hmm, it seems that this is an unintended side effect of the changed behavior of the divider line through 111e703. Looks like a trade-off, where you have to choose between the unintuitive behavior from #4 or the issue here. Not sure whether this is the intended behavior extmarks, or potentially a bug with nvim core.

For what it's worth, I added a workaround that fixes this issue without re-introducing the behavior from #4.