Print the codepoint of a unicode glyph represented by a latex command.

[Hongyi Zhao]

I find almost all symbols can be retrieved from "The Comprehensive
LATEX Symbol List":

http://tug.ctan.org/info/symbols/comprehensive/symbols-a4.pdf


But I want to obtain the codepoint, say, corresponding the LaTeX
symbols in the following document:

--8<---------------cut here---------------start------------->8---
\documentclass{paper}
\begin{document}
\textminus, \textnineoldstyle, \textohm, \textonehalf, \textoneoldstyle.
\end{document}
--8<---------------cut here---------------end------------->8---


Any hints for achieving this aim from within LaTeX itself?

Regards,
HZ
-- 
Assoc. Prof. Hongyi Zhao <hongyi.zhao at gmail.com>
Theory and Simulation of Materials
Hebei Vocational University of Technology and Engineering
No. 473, Quannan West Street, Xindu District, Xingtai, Hebei province