On 10/12/2024 7:27 PM, Julius Ross wrote:
Sorry that is not really what I want. I am looking to adjust (in
context) all of the
primitives \Umathfractiondenomdown, \Umathfractionnumup etc described on
p138 of the LuaMetaTeX reference manual.
Ideally it would be nice to be able to do this once from the start.
The reason is simply it would be much faster than having to export the
font each time I make a small change to the font (which is slow and so
harder to see the effect of the change).
If this is not possible/hard I can live without it.
You can make a so called font goodie file and tweak all parameters in
there (just look at the shipped files) but ... only very few of these
parameters actually make sense and are often set kind of bad (we're
still considering just ditching all but a few of them).
If you change them per formula you have to set them at the right moment
and if needed prefix them with \frozen in order to make them persistent
for the multiple runs (two in traditional tex, many more in luametatex)
over a math list (kind of like math style). There are lots of ways to
control the math rendering as basically everything can be configured in
the engine, but only a fraction makese sense and many relate to each
other.
So the question is: what do you want to change? Maybe there are ways
without messing with these parameters in the document.
Hans
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