On Thu, 5 Mar 2020, Hans Hagen wrote:

> On 3/4/2020 11:44 PM, Weber, Matthias wrote:
>> Dear List,
>> 
>> \starttext
>> \startformula
>> \left(f\right)'' = f''
>> \stopformula
>> \stoptext
>> 
>> has the second apostrophe set too low. This is in MKIV on ConTeXt live as 
> well as in my slightly older version.
>> What is the “right” way to typeset a second derivative?
> you have to turn on
>
> \setupmathematics
>   [collapsing=3]
>
> but it has the side effect of also collapsing more:
>
> $x'' >= 10$
>
> (which is why the mechanism is currently turned off by default)
>
> i'll think about an option that only does some specific ones only
>
> (btw, i love tex but these primes are a bit painful due to th eorriginal 
> approach which has lead mixtures of (1) raised in the font and/or raised 
> in the engine, (2) them being superscripts but not really, (3) fonts 
> therefore doing it inconsistently, (4) some parsing related to multiple 
> scripts, (5) double, tripple, etc primes being real unicode characters 
> but spaced singles in traditional tex (which itself then introduces some 
> size juggling) ... i could proabbly write a few pages about it)

So what's the best way to input them: using \prime, \prime\prime, etc.?

Aditya