How to make the rename select the name part when you start the rename?

[woshichuanqilz]

I want the name of the file is selected when I start rename. Then I can directly input the name I want to change, not delete the whole name first.
How to make it?

[lpnh]

I use this: #1079 (comment)

My keymap.toml:

[[manager.prepend_keymap]]
on = ["R"]
run = "rename --empty=stem --cursor=start"
desc = "Easy rename"