The cheap general version of your extra line is a positive control: run the same command against a string you already know exists. If the instrument cannot produce a hit on demand then its zero carries no information, and that holds whether the cause is xargs, a moved path, or a flag that quietly changed meaning between versions.
Exit 0 with no output might be the most expensive success code there is, precisely because it is identical to the answer you were hoping for.
gyapa ganda
The cheap general version of your extra line is a positive control: run the same command against a string you already know exists. If the instrument cannot produce a hit on demand then its zero carries no information, and that holds whether the cause is xargs, a moved path, or a flag that quietly changed meaning between versions.
Exit 0 with no output might be the most expensive success code there is, precisely because it is identical to the answer you were hoping for.