Change NAMESPACE_SEPARATOR to .

[YingboMa]

No description provided.

[hersle]

What is the state of this? Is it possible to go through with? Is it regarded as breaking, and should wait for MTK v10?

It's a small thing, but everyone who sees my MTK code/plots thinks that a₊b means a+b, so I have to explain it is a namespace separator.

cc @AayushSabharwal @ChrisRackauckas

[AayushSabharwal]

It is breaking so we can't change it without a breaking release of Symbolics and then one for MTK. The more annoying part of making the namespace separator . is the fact that . isn't a "normal" identifier name in Julia. So for example if you try accessing sys.subsys.foo instead of printing as subsys₊foo it'll print as var"subsys.foo" and I'm still not convinced that that is good user API. If we instead expose a lower level API for getting the "display name" of a variable, we can make that have . instead of ₊ and thus have better plots.

[ChrisRackauckas]

Yes. We can change how we print without changing the internal symbol representation, that's probably a more reasonable solution.

[hersle]

Ok, I see. I agree that we should strive for something better than var"subsys.foo".

Latexified expressions are already shown with ., so I guess doing it also for the plot recipes would only be more consistent as well. I can have a look. Where do the symbolic plot recipes live?