How do I unset a variable in the fish shell?

Question

In bash I can unset a variable with

unset myvar 

In fish I get

fish: Unknown command 'unset' 

What's the equivalent for unset in fish.

Answer 1

Fish uses options on the set command to manipulate shell variables.

Unset a variable with the -e or --erase option.

set -e myvar  

Additionally you can define a function

function unset   set --erase $argv end  funcsave unset 

or an abbreviation

abbr --add unset 'set --erase' 

or an alias in ~/.config/fish/config.fish

alias unset 'set --erase'