Why InputForm of iconized output are hard to read in recent versions of Mathematica? How to correct it?

Question

I never liked WRI tendency to now iconize some results from computation in the notebook. I do not know if this is the correct term for it.

I like to see result always in plain normal code. Here is an example

Clear["Global`*"]
eqn = y''[t] + b y'[t] + (c0 + c1 t + c2 t^2 + c3 t^3) y[t] == 0;
sol = y[t] /. First@DSolve[eqn, y[t], t]

it gives

And one is supposed to click on the icon to get some information. But I want to see the plain text solution.

When applying InputForm, the output get chopped and not readable. This is inside notebook with 100% zoom on windows 10.

 InputForm[sol]

Can't read it. In version 12.2 it was readable. Below is screen shots showing same output in version 11.3, 12.2, and 12.3.1.

Is there a better option to see the solution, without this icon thing showing up? As InputForm is not helping too much here.

If I make the resolution 300%, then output of InputForm above becomes readable. But I can't have resolution at 300%. it seems to do with the Format used.

Any workaround?

version 12.3.1 on windows 10.

Here is some comparison

Version 11.3

Version 12.2

Version 12.3.1

Answer 1

When I evaluate your DSolve command I mouse over the iconized DifferentialRoot object I see this

and when I click the icon I see this

which seems to me the easiest way to view the contents of the object. If you want a workaround for the InputForm bug I recommend shortInputForm - in fact I recommend it always instead of InputForm.

Finally if you want to avoid the iconization altogether you can define BoxForm`$NewHolonomicBoxes = False. The usual caveats of undocumented functionality apply, but it seems to disable the new boxes for this object.