Re: [NTG-context] Changing font for math function

10 May 2015

      Hi Hans,

Thanks for the new feature in \setupmathematics.
I did some testing of the feature on a several documents, , and followed the discussions you had with Aditya and Wolfgang. 
Everything works fine, except that when one tries to modify, for instance the definition of \liminf (in order to have it as an underlined lim), ConTeXt reports an error. 
Please see below the minimal example and the error message. 
In the minimal example if you uncomment the lines modifying the definition of \liminf on gets an error message.

%%%% begin test-functionstyle.tex
\setupmathematics
 [functionstyle=\ss,
  functioncolor=red]

%\unprotect
%\definemathcommand [liminf]  [limop] {\underline\mfunctionlabeltext{lim}}
%\protect

\starttext
\startformula
 f = \sin i\omega x^{\sin(x^{\sin(y)})}
\stopformula

Fatou's lemma implies
\startformula
\int_{\Omega}\liminf_{n\to\infty} (1+\cos(n|x|))dx \leq \liminf_{n\to\infty}\int_{\Omega}(1+\cos(n|x|))dx.
\stopformula
\stoptext
%%%% end test-functionstyle.tex

The error message is:
\begingroup 
\mfunctionlabeltext #1->\begingroup 
                                    \math_tags_mfunctionlab {#1}\c_apply_fun...
\483>limop #1->\mathop {#1
                          }
l.45 \int_{\Omega}\liminf
                       _{n\to\infty} (1+\cos(n|x|))dx \leq \liminf_{n\to\inf...

Best regards: OK
...
On 10 May 2015, at 01:30, Hans Hagen  wrote:
On 5/9/2015 4:16 PM, Aditya Mahajan wrote:
...
On Sat, 9 May 2015, Aditya Mahajan wrote:
...
On Sat, 9 May 2015, Hans Hagen wrote:
...
i've added (uploading beta now)
\setupmathematics
 [functionstyle=\ss,
  functioncolor=red]
\starttext
\startformula
 f = \sin i\omega x^{\sin(x^{\sin(y)})}
\stopformula
\stoptext
best test this because Mojca will at some point push into tex live
(at which moment we have a current)
Thanks. This works correctly on a small test. I will test this more
thoroughly.
\sin etc should not behave like \text{...}. \text should adapt to the
surrounding style while \mathoptext should not. In particular, in the
following
{\ss $\sin x$}
  {\bf $\sin x$}
\sin should be in normal text upright font and not adapted to the
surrounded
text.
Is it possible to set a value of functionstyle so that the surrounding
text font
styles are ignored (but the font size is not).
does
\setupmathematics
 [functionstyle=\normalrm,
  functioncolor=red]
work ok? (\rm is redefined in math mode so we need the outer one)
we could have some keywords for this if needed
...
I realize that this takes us back to the old 'bold-math-in-section-heads'
debate. With the current implementation:
\setuphead[section][style=bold]
    \section{$\sin x$}
sin is bold, and if you implement the change that I am suggesting, then
\sin
will not be bold in section titles. If someone prefers \sin to be bolded in
section headers, he would have to add
\setupmathematics[functionstyle=\bf] in
the section style as well.
the next stage of the math font project will provide some real bold fonts (so bold alphabets get heavy variants)
...
Aditya
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: [NTG-context] Changing font for math function

Otared Kavian