[XeTeX] LM math and map files

[Hans Hagen]

Mojca Miklavec wrote:
> Hello,
> 
> Can someone please explain me if/when/why the map files (for math) are
> needed in XeTeX?
> 
> After begging for LM map files for XeTeX, I figured out (if not
> mistaken) that xelatex never tries lo load lm-math.map, and math still
> works OK.

probbably because there is no remapping involved at all, i.e. 1-1 
mapping; in that case a map file could specify an enc file which would 
attach names to slots but that is not a demand

> ConTeXt loads lm-math.map and lm-rm.map exlicitely, and if they're not
> present for dvipdfm, the documents are broken. Now I removed explicit
> loading of lm-math.map and tried the same for iwona-mi.map,
> iwona-sy.map, ... and some simple math seems to work OK. (I wanted to
> test how iwona math works with xelatex, but I didn't know how to do
> that.) Now I'm completely confused ... Was the math I was testing with
> too simple, did I forget to remove some traces of those map files, or
> did I misunderstand the concept completely?
> 
> I would be glad to hear any explanation about it, so that the issue
> can be fixed properly either in ConTeXt or in those famous Polish
> fonts (iwona, kurier, antykwa, lm).

Hans

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