etbb parentheses spacing fix

etbb parenthesis fix

%%%%%%%%
%%%%% Michael sharpe's brilliant typeface `etbb' is a 
%%% wonderful adaptation of Edward Tufte's own adaptation of Bembo
%%%%%% However, there is, as part of the font, an overlap between 
%%% the opening parenthesis --- ( --- and various letters, most notably J
%% This is aesthetically displeasing, so I used this small snippet 
%%%% of XeTeX `interchartoks' to fix the spacing
%%%% Now, (J doesn't overlap! 

\XeTeXinterchartokenstate = 1
\newXeTeXintercharclass \mycharclassj
\XeTeXcharclass `\J \mycharclassj
\newXeTeXintercharclass \mycharclasslittlej
\XeTeXcharclass `\j \mycharclasslittlej
\newXeTeXintercharclass \mycharclasst
\newXeTeXintercharclass \mycharclassu
\newXeTeXintercharclass \mycharclassv
\XeTeXcharclass `\T \mycharclasst
\XeTeXcharclass `\U \mycharclassu
\XeTeXcharclass `\V \mycharclassv


\newXeTeXintercharclass \mycharclassp
\XeTeXcharclass `( \mycharclassp

\XeTeXinterchartoks\mycharclassp\mycharclassj={\kern1.5pt }
\XeTeXinterchartoks\mycharclassp\mycharclasslittlej={\kern1.5pt }
\XeTeXinterchartoks\mycharclassp\mycharclasst={\kern0.7pt }
\XeTeXinterchartoks\mycharclassp\mycharclassu={\kern0.7pt }
\XeTeXinterchartoks\mycharclassp\mycharclassv={\kern0.7pt }

Most definitely; I think this is why the endpoint is to modify the kerning itself, so as to maintain maximum compatibility (I mainly use LuaTeX but I have so many older documents using specific XeTeX hacks that cross compatibility is important to me too)