[NTG-context] integral symbol

Hans Hagen pragma at wxs.nl
Thu Dec 29 13:06:05 CET 2016


On 12/29/2016 12:12 PM, Fabrice Couvreur wrote:
> Hi Hans,
> Thanks for your solution. I created a macro, is it "robust" ?
> Fabrice
>
> \setupmathextensible[integral][rightoffset=-3mu,exact=yes,factor=2]

\unexpanded
> \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 at wxs.nl
> <mailto:pragma at 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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