Language servers do not implement find_nearest_scope as needed by symbol-tree
No idea if this is a general LSP limitation or a problem with the rust-analyzer plugin. I think the name of the current block where the cursor is placed should be displayed in the status bar. It doesn't make any difference where I place the cursor, it stays at "Select Symbol...":
It seems to work for C projects:
version = "43.alpha2"
channel = "flatpak-nightly"
identifier = "43.alpha1-702-g06a85dd0f"
Edited by Christian Hergert