[XeTeX] Unicode-math strange results

[wodzicki at math.berkeley.edu]

> - fontspec, unicode-math, luaotfload from CTAN (today)
> - luatex and xetex binaries from context-minimals
>
> luatex --version
> This is LuaTeX, Version beta-0.60.1-2010042811
>
> xetex --version
> XeTeX 3.1415926-2.2-0.9995.2 (Web2C 7.5.6)
>
> I have found the following problems:
>
> 1. Delimiters:
> With xelatex, \left and \right delimiters do not grow.
> \big, \Big, \bigg, \Bigg produce only the default size.
> With lualatex, delimiters are fine (no problem).
>
> 2. Radicals:
> With xelatex, I only get a radical sign without a bar.
> With lualatex, I get a misplaced radical sign with a very thick bar.
> (The radical sign should hang below the baseline, but doesn't.)
>
> Enclosed is a zip file with all test sources and log files.
>
> Regards, Ulrik

I performed tests with the xe-test-*.texfiles supplied by Ulrik:

This is XeTeX, Version 3.1415926-2.2-0.9995.1 (MiKTeX 2.8) (preloaded
format=xelatex 2010.5.20)  6 JUN 2010 18:17
(...)

and found that both the \left & the \right delimiters, and \sqrt were
rendered properly. So there is no problem on my MiKTeX system.

To perform these tests I downloaded the current versions of 'fontspec' and
'unicode-math' from CTAN.

Mariusz