return(1)

NAME
return -- stop the current inner function

  Synopsis

function NAME; [COMMANDS...;] return [STATUS]; [COMMANDS...;] end

  Description
return halts a currently running function. The exit status is set to STATUS if it is given.

It is usually added inside of a conditional block such as an if statement or a switch statement to conditionally stop the executing function and return to the caller, but it can also be used to specify the exit status of a function.

  Example
The following code is an implementation of the false command as a fish function

function false
    return 1
end