> Am 09.12.2014 um 09:59 schrieb j. van den hoff <veedeeh...@googlemail.com>:
>
> On Tue, 09 Dec 2014 09:42:03 +0100, Wolfgang Schuster
> <schuster.wolfg...@gmail.com <mailto:schuster.wolfg...@gmail.com>> wrote:
>
>>
>>> Am 08.12.2014 um 17:41 schrieb j. van den hoff <veedeeh...@googlemail.com>:
>>>
>>> hi list,
>>>
>>> new to `context' and my first question to the list: how can I achieve the
>>> following (`latex') behaviour:
>>>
>>> \newcommand{\km}{\ensuremath{K_m}}
>>> We can now use \km\ in the body text as well as in this
>>> \begin{equation}
>>> \km = 1
>>> \end{equation}
>>> display equation.
>>>
>>> in `context'? I've tried something like
>>>
>>> \def\km{\math{K_m}}
>>> We can now use \km\ in the body text but get sytnax errors when
>>> putting it in this
>>> \startformula
>>> \km = 1
>>> \stopformula
>>> formula.
>>>
>>> but this fails for obvious reasons (as would using `$$' instead of
>>> `ensuremath' in the `latex' case).
>>>
>>> so what I need is a way of defining (potentially complex) math-expressions
>>> via some shortcuts/definitions/macros/abbreviations (whatever) which I can
>>> then use
>>> in the formula environment (or whatever it's called in `context'...) as
>>> well as in the body text.
>>>
>>> any help appreciated,
>>
>> In ConTeXt you have to write
>>
>> \define\km{\mathematics{K_m}}
>>
>> but there is not much to gain from this because you can enter math mode in
>> the text with \m{…}.
>
> thanks for the response. in my silly example you are right (but even there it
> saves more than 50% of keystrokes). but I'm thinking of course of more
> tedious math expressions where it rapidly is handy to use such abbreviations
> -- the more so, if you have, say, 20 different ones appearing repeatedly in
> the document. but that would work with the `\def..\math' construct in the
> body text. what does _not_ work, then, is to use the definition in a display
> (\startformula...\stopformula) equation (which it _does_ in latex when
> isolating the math expression with `ensuremath'). so my real question(s) are:
>
> 1. is there any way to achieve the same functionality in `context' (expansion
> of math-containing defintion/macro/abbreviation in text _and_ math
> environment? if yes, how would I do this?
>
> 2. if no, would it be sensible (and feasible) to modify `\math' behaviour and
> to make it aware of whether it is called from within text or from within a
> display equation (in which case it should do nothing...), i.e. mkae it
> behave like `\ensuremath' in latex?
1 + 2:
\define\Foo{\mathematics{f(x)}}
\define\Bar{\mathortext {f(x)}{\m{g(x)}}}
\starttext
a \Foo\ \Bar\ b
\startformula
\Foo\ \Bar
\stopformula
\stoptext
Wolfgang___________________________________________________________________________________
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