You can see all registers in use with :registers
, to paste from a register say "2
in insert mode use key combination <ctrl-r>2
or in normal mode "2p
. You can check out more in :help registers
. Unnamed register or ""
is the system clipboard I think. To copy texts in a register you can prepend yank (/delete/cut, etc.) with that register "_
(for black hole register[1])
This is for neovim. Have keybinds for them and there saved you a plugin :D
Text yanked in this register is gone, i.e. it’s not saved in any register. ↩︎
I think you mean registers not buffers. buffers are file(s) loaded in memory while registers contain text yanked/deleted/last command/last search, etc.