Buffer list not displayed when there is broken tramp buffer amongst them

[jumper047]

So, I have an dired buffer displaying some directory on remote box. Then I'm losing connection to that box. And after that, if I'm trying to switch buffer with marginalia mode enabled, I got this error in echo area after some waiting:

Tramp: Opening connection nil for username@192.168.1.233 using scp...failed
Error in post-command-hook (vertico--exhibit): (file-error "Tramp failed to connect.  If this happens repeatedly, try
    ‘M-x tramp-cleanup-this-connection’")

There are no buffer list displayed in vertico until marginalia mode is enabled.

[minad]

Which part of Marginalia breaks? See https://github.com/minad/vertico?tab=readme-ov-file#debugging-vertico for obtaining a stack trace. I am happy to accept a patch which hardens Marginalia accordingly. Besides that I recommend to filter recentf to not include remote files.

EDIT: I just tried to reproduce the problem, but it doesn't occur in my setup.

[ferrine]

I observe exactly the same issue. I have buffers that refer to the remote server (connection lost) and it causes marginalia to fail. Interestingly it happens once the selection candidate is the remote one.

[minad]

Can you please provide a stack trace?

[ferrine]

unfortunately, it is quite challenging to reproduce it

[ferrine]

it happens under some uncertain conditions, can't reproduce it. Could it be a solution (implemented in the library) to output errors in some Warnings or Messages buffer instead of blocking the entire minibuffer interaction?

[ferrine]

I had it under my lost session and so far my fix it is to wrap vertico--exhibit with ignore errors advice