Some commands should generate the appropriate Unicode characters

[fred-wang]

The semantics of the MathML code generated by some LaTeX commands could be improved by generating the appropriate Unicode characters. However, that may not always be possible for the moment when our MathJax fonts do not include the necessary glyphs.

These tests fail in LaTeXToMathML

LaTeXToMathML/above-below/accents-1.html
LaTeXToMathML/symbols/largeops-1.html
LaTeXToMathML/primes-1.html

See the comments in the manifest files:
http://devel.mathjax.org/testing/testsuite/LaTeXToMathML/above-below/reftest.list
http://devel.mathjax.org/testing/testsuite/LaTeXToMathML/symbols/reftest.list
http://devel.mathjax.org/testing/testsuite/LaTeXToMathML/reftest.list

[fred-wang]

Some issues were actually already reported:

#116
#119

[dpvc]

OK, these issues are handled in the issue119 branch of my fork of MathJax.

[fred-wang]

LaTeXToMathML/primes-1.html looks good. I just need to add the new class="MJX-variant" for the single prime.

[fred-wang]

Tests updated.

LaTeXToMathML/above-below/accents-1.html
LaTeXToMathML/above-below/accents-3.html
LaTeXToMathML/symbols/largeops-1.html
LaTeXToMathML/symbols/largeops-2.html
LaTeXToMathML/primes-1.html

I executed the tests on Firefox and all look ok. Thanks.

=> Ready for release