Subject: bug#48197: describe-key could mention original values

From: 積丹尼 Dan Jacobson <[email-masked]>
Date: Mon, 03 May 2021 23:35:01 +0800

describe-variable also tells people what the original value was.
Perhaps describe-key could also do the same.

xxx runs the command yyy
It is bound to xxx
It was originally bound to aaa and bbb.