What happend to %#ok<DEFNU>

In my last Matlab version ( I think R2020a ), I added %#ok<DEFNU> to functions (which were on purpose unused) to silence the Matlab linter warning.

Now in Matlab R2021a, Matlab linter gives me a warning that this warning suppression is not needed anymore. Since a lot of people will still use older versions of Matlab, I do not want to remove it, since then a warning appears in older versions.

• Is this a R2021a bug, or
• Did the behaviour of DEFNU change, or
• was %#ok<DEFNU> removed (I doubt, because I still see it in the list of warnings in the "Preferences/Matlab/Code Analyzer"-window

---

Edit: I tried to make a MWE an found out that there seems to be a behaviour change, triggered by a usage of evalc.

function linttest1
eval('');
end
function dummy; end  %#ok<DEFNU>  % mlinter warning here about unnecessary DEFNU

Versus:

function linttest2
end
function dummy; end  %#ok<DEFNU>  % no warning here

I guess this answers my question.