[Feature request] Support nvim-dap-ui buffers

[shadyalfred]

Currently the plugin doesn't work with nvim-dap-ui's elements (like the buffer of the watchers for example). It doesn't even restore them if you toggle maximize the source code buffer. I think it might be because nvim-dap-ui buffers are hidden or something, not sure what they're called; basically they're not visible in the list when you run the command :buffers

[declancm]

I'll try and figure out a fix for this!

[yogan]

There seems to be a general issue with "special windows": nvim-tree, quickfix/location list, help, etc. When you try to maximize those, they disappear and the last "real" (file/buffer) window gets maximized.

I can live without maximizing those special windows, every now and then I forget, and they I lose those windows. So it would be nice to detect them and just do nothing.

[yogan]

I tried to investigate a bit, but I didn't come that far (I basically have zero experience with nvim plugin development).

Still, what I found out:

• closing of non-file buffers happens here: https://github.com/Shatur/neovim-session-manager/blob/9652b392805dfd497877342e54c5a71be7907daf/lua/session_manager/utils.lua#L74-L79
• just commenting the loop out does indeed lead to weird behavior:
  • you can maximize utility windows then, but:
  • on restore they are just empty (I tested with nvim-tree)
• curiously the the comment above the loop mentions a session manager, so I tested with the session manager that I use (possession.nvim)
• possession.nvim kind of can restore sessions with utility windows:
  • nvim-tree works just fine, it gets its correct position and contents
  • quickfix list, or LSP diagnostics with e.g. Trouble get restored, but get a default window size, and have not content (no content makes a lot of sense, as those would need to be re-evaluated)

So maybe we can find out what possession is doing and try to use that, as both plugins are based on :mksession