For anyone intered, here's the app:
https://apps.apple.com/app/apple-store/id6475267297?pt=11914...
I have really come to appreciate modern opinionated tooling like gofmt, that does not come with hundreds to thousands of knobs.
In a way you can use this list of JVM options to illustrate how successful Java has become, that everyone needs an option to get it to work how they like it.
As a Java dev, I have maybe used about 10-15 of them in my career.
The weirdest/funnest one I used was for an old Sun Microsystems Solaris server which ran iPlanet, for a Java EE service.
Since this shared resources with some other back of office systems, it was prone to run out of memory.
Luckily there was a JVM option to handle this!
-XX:OnOutOfMemoryError="<run command>"
It wasn't too important so we just used to trigger it to restart the whole machine, and it would come back to life. Sometimes we used to mess about and get it to send funny IRC messages like "Immah eaten all your bytez I ded now, please reboot me"
I suggest most people never touch almost any other options. (Flight recording and heap dumps being the exception).
In reality the number of options is significantly smaller than the 1843 you mentioned. The list contains boatloads of duplicates because they exist for multiple architectures. E.g. BackgroundCompilation is present on 8 lines on the OpenJDK 25 page: aarch64, arm, ppc, riscv, s390, x86 and twice more without an architecture.
While gofmt is “just” a formatting tool. The interesting part is that go code that doesn’t follow the go formatting standard is rejected by the go compiler. So not only does gofmt not have knobs, you can’t even fork it to add knobs, because the rest of the go ecosystem will outright reject code formatted in any other way.
It’s a rather extreme approach to opinionated tooling. But you can’t argue with the results, nobody writing go on any project ever worries about code formatting.
Nobody has ever tested all possible inputs to 64 bit multiplication either. You can sample from the space.
Zillions of options. Some important, some not