kill-dollar-mode

Remove leading $ from shell-script-like text in documentation.

Motivation

It's common to see documentation that describes how to run commands in a shell formatted with $ at the beginining of the line to represent the prompt:

$ pwd

This minor mode removes the leading $ and surrounding whitespace from the text in the kill ring, so when yanked into a shell, it can be executed.

In the example above, if the line of code were killed and yanked, the yanked text would be pwd.