How to use select_register in config.toml?

[rkshthrmsh]

How to write a key-mapping to yank something into a register, for example t?

# -- snip --
space = ["select_register", "t", "yank"] # Does not work
space = ["select_register t", "yank"] # Also does not work

[the-mikedavis]

This isn't currently possible. Bindings like this need macro keybindings (#1383).