Hi Hans,
Thanks for your solution. I created a macro, is it "robust" ?
Fabrice

\setupmathextensible[integral][rightoffset=-3mu,exact=yes,factor=2]
\def\integ#1#2#3{\math{\autointegral{#1}{#2}{#3}\diff x}}

\starttext
 \integ{4}{1}{g(x)}
\stoptext


2016-12-28 18:40 GMT+01:00 Hans Hagen <pragma@wxs.nl>:

> On 12/28/2016 6:14 PM, Alan Braslau wrote:
>
>> Hi Hans, Hi list,
>>
>> This is similar to what we have discussed earlier on this list and
>> elsewhere regarding \over vs. \frac. (I agree with Knuth that {a \over
>> b} is *much* more readable in running source code than \frac{a}{b} but
>> have resigned myself to use \frac{}{}, as this can be made better
>> behaved and gives a much better result.)
>>
>> Other traditional TeX constructs like \int^a_b have their charm (and
>> need to remain supported, just like is \over), but I support
>> introducing and encouraging the use of new constructs like your example
>> below. An alternative syntax (that could co-exist) would be admitting
>> $\left\int ... \right.$, but I do not know what limitations there might
>> be with both the (luatex) engine and with ConTeXt.
>>
>
> the tricky part there is that int has super and subscripts while left /
> right are different animals ... i looked into this (in the engine) and
> decided to delay implementing that (i might do it some day but it's sort of
> tricky to keep compatibility)
>
> also, ints are upright (extensible or stepwise sizes) or slanted (stepwise
> sizes) so even if we support something there are some limitations due to
> lack of font support (could be dealt with in due time)
>
> The problem with extensions, like always, in straying from traditional
>> TeX is interchangeability of code, or, more importantly, in the
>> learning curve obstacles that this introduces to traditional TeX (and
>> LaTeX) thinking. I know that at some level we do not care, for we often
>> make (good) design choices that improve the syntax of ConTeXt.
>>
>> Perhaps we can use this thread to discuss other cases (like \sum, ...)
>> that present difficulties and then decide on good solutions.
>>
>
> sure ...
>
> Hans
>
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