The `follow_current_file = true` doesn't seem to work about neo-tree-diagnostics.nvim

[mrbjarksen]

The option follow_current_file decides if the neo-tree window should change its focused node when moving between files outside the window. It sounds like you're looking for the preview feature that was recently added to neo-tree. I created the branch native-open-and-preview to test it, but I think it's safe to merge it to main. I'll do that now.

[nyngwang]

@mrbjarksen Yes, I just tried the mapping ['<cr>'] = 'preview' and it works like my no_open above. Could you elaborate more on how to make this "preview" mode behavior enabled by default, so I don't have to use a mapping to enable it?

[mrbjarksen]

Currently, automatically starting preview mode can only be done by adding an event handler for neo_tree_buffer_enter. It should be simple to add a config option for this though, I'll work on that when I can tomorrow. There's a newly opened issue on neo-tree regarding this feature (nvim-neo-tree/neo-tree.nvim#545) so the option might change in the future.

By the way, I believe neo-tree has the toggle_preview command using a floating window mapped to P by default.

[mrbjarksen]

I just added options to enable automatic preview: 6e4180c.

[nyngwang]

@mrbjarksen The commit seems to cause an error. The error is shown on both diagnostics list and neotree filesystem filetree.

Error in event handler for event neo_tree_buffer_enter[diagnostics.neo_tree_buffer_enter]: ...im/site/pack/packer/start/nui.nvim/lua/nui/tree/init.lua:254: Expected Lua number