# [NTG-context] Euler with fallback

Sanjoy Mahajan sanjoy at MIT.EDU
Mon Mar 3 16:24:14 CET 2014

Aditya,

>> Here's an example (using 2014.02.14 beta).  The "Sun" subscript using
>> _{\tf Sun} or _{\rm Sun} was in Palatino in the corresponding MkII
>> setup, but is in Euler now.  The workaround of an hbox with \tfxx or
>> \tfx doesn't get quite the right size.
>
> That is because in math mode, \rm is symonym with \mathrm etc. The
> standard way to write this is _{\text{Sun}}.

I agree about \rm.  However, _{\tf blah} once (in MkII) selected the
text font.  e.g.

\starttext
\placeformula\startformula
M_{\tf Sun}
\stopformula
\stoptext

Is the II->IV change in \tf semantics intended?  It's not hard to adjust
for by using 'sed'.  I raise the issue only in case the change is not
intended.

Actually, the example just as above (i.e. using modern fonts) works fine
works in MkII and MkIV.  It also works if "\setupbodyfont[palatino]" is
inserted as the first line.

It's fails only when using Palatino with Euler (at least, in the way
that I did it).

That data doesn't say what the right behavior is.  But it may help you
decide.

-Sanjoy