Dap terminal: follow output

[gonstoll]

I'm coming from nvim-dap-ui, and I'm loving this plugin ❤️

There is something that bothers me a bit, that I noticed it doesn't happen with nvim-dap-ui. It might not be an issue with this plugin in particular, but rather an upstream thing, but I'm unsure so I'm seeking for some guidance.

What I noticed is that output that is being "streamed" into the dap-terminal is not being "followed", meaning that as content gets outputted there, the cursor just stays at the top and when content exceeds the bottom line I just can't see what's going on there.

This is specially frustrating when in debugging browser tests for example. I'm used to having the browser in debug mode in one screen, and the content of the tests being "followed" on the dap terminal on another screen.

Is this something that can be done here?

EDIT

What I'm currently doing is:

dap.defaults.fallback.focus_terminal = true

dap.listeners.before.attach["dap-view-config"] = function()
   require("dap-view").open()
end

dap.listeners.before.launch["dap-view-config"] = function()
   require("dap-view").open()
   vim.cmd("normal! G")
end

It works, I just don't think this is the right approach 🫤 something like this could potentially be a solution, but I'm just not sure how to get it to work with this plugin.

[igorlfs]

Hey,

Can you give this branch a try?

It works, I just don't think this is the right approach

I have essentially implemented the same trick as you, just at a lower level. Indeed, it does have some limitations.

something like could potentially be a solution, but I'm just not sure how to get it to work with this plugin.

I took a stab at porting this workaround, but I faced the same limitations with the other method. Namely, it does not work properly when restarting a session, which may share the same buffer. To properly support this use case, we'd have to have support for multiple sessions, which is being worked on.

If the solution from 846954d covers your use case, let me know. If it doesn't, I'd rather finish the work on multiple sessions first, and then revisit this discussion, if you don't mind.

[gonzastoll]

Hey! Thanks for the reply, and for taking a stab at this 🙏

I tried that branch out, and it seems it does not cover my use case sadly 😞

For the moment, the trick we are doing seems to cover my very limited use case, so I can just stick with that while you work at the multiple sessions feature 👍 again, thank you for giving this a shot!

[igorlfs]

Hello!

Sorry for the long wait! Multi-session support is finally here! Well, almost. I still have to merge the PR 😛

But I went ahead and ported nvim-dap-ui's autoscroll, with commit 34378d0

From my testing, it works perfectly, and plays really nice with multiple sessions.

Can you give it a try?