Prevent mlint warning for onCleanup like return value

I wrote a function, similar to onCleanup. I noticed that Matlab does not give a mlint warning for the following code.

dummy = onCleanup( @() some_func );

But for my own function

dummy = MyOwnCleanup( @() some_func );

I get the warning Value assigned to variable might be unused, which I need to silence with %#ok<NASGU>. Obviously, Matlab recognizes the onCleanup call and does not emit a warning. How can I acchieve similar behaviour for my own MyOwnCleanup function?

[Rik]

This is probably not possible without major interference with the editor. It will probably be an ugly hack.

A much easier hack is to overload the built-in onCleanup function. I don't think I would recommend this.

What exactly is your version doing? I might be interested in using it myself.

[tommsch]

For the original onCleanup function I do not like that it is often a little verbose. E.g. to change the working directory back you have to do

olddir = pwd;

cleandir = onCleanup( @() cd(olddir) );

So I wrote a cleanup function which accepts parameters, so you can write

cleandir = onCleanup_lazy( @(x) cd( x ), pwd );