Simplify puts plus and minus signs next to eachother

[popiolek]

Trying to use .simplify() function on string equations I came across some wiered behaviors.

Describe the bug
I would expect some simplifications, that I don't see in result:

1. plus and minus signs are next to eachother (...a + -(3...)- I'd expect for plus to be reduced
2. parenthesis is kept even though it doesn't have to be there (...+ -(3 * x) -...)
3. Above simplifications work in case of ...+ (-2z)... being converted to ...- 2 * z - not sure if it's a bug, or some other problem.

To Reproduce

math.simplify("+3a + (-2z) + x * (-3)").toString({parenthesis: "auto", implicit: "hide"})

Result

"3 a + -(3 * x) - 2 * z"

Expected

"3 a - 3 * x - 2 * z"

[josdejong]

Thanks for reporting.

Anyone interested in debugging this and fine-tuning the rules of simplify?

[josdejong]

A fix is published now in v11.9.0