Hi Aditya,
I agree totally with you and support your suggestion…
Maybe instead of the « delimiter » keyword, one could introduce a keyword such
as « size »:
\MEAN[size=auto] expands to \left\langle .. \right\langle
\MEAN[size=] expands to \langle .. \rangle
\MEAN[size=big] expands to \big\langle ... \big\rangle
\MEAN[size=Big] expands to \Big\langle ... \Big\rangle
\MEAN[size=bigg] expands to \bigg\langle ... \bigg\rangle
\MEAN[size=Bigg] expands to \Bigg\langle ... \Bigg\rangle
Best regards: OK
> On 6 Mar 2017, at 20:57, Aditya Mahajan <adit...@umich.edu> wrote:
>
> Hi Hans,
>
> There are instances where the automatic scaling provided by \left and \right
> is not ideal and one has to use manual scaling. For example:
>
> \starttext
> \startTEXpage \startformula
> \left\langle \sum_{i=1}^n A_i x_i \right\rangle
> \hbox{ vs. }
> \bigg\langle \sum_{i=1}^n A_i x_i \bigg\rangle
> \stopformula \stopTEXpage
> \stoptext
>
> Currently, math fences always default to using \left and \right, which can
> lead to undesirable results. For example:
>
> \definemathfence [MEAN] [angle] [command=yes, color=blue]
>
> \starttext
> \startTEXpage \startformula
> \MEAN{ \sum_{i = 1}^n A_i x_i }
> \hbox{ vs. }
> \bigg\langle \sum_{i=1}^n A_i x_i \bigg\rangle
> \stopformula \stopTEXpage
> \stoptext
>
> Could we add an option to \definefence that allows the user to select the
> delimiter scaling using a key (say, `delimiter`) so that
>
> \MEAN[delimiter=auto] expands to \left\langle .. \right\langle
> \MEAN[delimiter=] expands to \langle .. \rangle
> \MEAN[delimiter=big] expands to \big\langle ... \big\rangle
> \MEAN[delimiter=Big] expands to \Big\langle ... \Big\rangle
> \MEAN[delimiter=bigg] expands to \bigg\langle ... \bigg\rangle
> \MEAN[delimiter=Bigg] expands to \Bigg\langle ... \Bigg\rangle
>
> I am not sure whether `delimiter` is the best key. I think that `scale` may
> be better, but using `scale` for specifying the scaling of math delimiters
> will be inconsistent with how `scale` is used everywhere else. Another option
> is to use `alternative` key.
>
> Thanks,
> Aditya
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