fish shell: how to add a newline before existing prompt?

Question

I'm happy with the default fish prompt, except I'd like to cause a newline to be printed before it, to give visual separation from the previous command.

Is there some way for me to define a new fish_prompt that prints a newline and then somehow defers to the function that was previously known as fish_prompt ?

Answer 1

Copy the prompt to another name, then call it from a new prompt function:

functions --copy fish_prompt fish_prompt_original
function fish_prompt; echo; fish_prompt_original; end
funcsave fish_prompt_original
funcsave fish_prompt

Answer 2

Since fish does not have name spaces you cannot create two implementations of a function -- one of which calls the other. You will need to run funced fish_prompt , insert an echo or similar command at the appropriate point, then save it as a private version via funcsave fish_prompt .