Inspired by the discussion about stretching and shrinking in monospaced
fonts, I have a question about the usage of space characters, (partially
about German specific, but there seem to be a lot of German speakers
active on this list):
1. Unicode defines some space characters: u2000 (EN QUAD) to u200b (ZERO
WIDTH SPACE), u00a0 (NO BREAK SPACE) and u202f (NARROW NO BREAK SPACE).
Some of these roughly correspond to tex-macros \, \; ~ and so on. How
should these characters resp. tex-macros be used?
2. How should some ISO- or DIN-norms be interpreted in terms of "how to
do this in xetex?"?
- small space as digit group separator
- small space as separator of abbreviations (e.g. z.B.)
Two apsects should be concerned:
- line breakability: i think in both cases of 2., line breaks should
be forbidden.
- Copy/Paste-ability from pdf-viewers
Below a small example for 2.
\documentclass{minimal}
\usepackage{fontspec}
\usepackage{unicode-math}
\setromanfont[Ligatures=TeX]{TeX Gyre Pagella}
\setmathfont[Scale=MatchUppercase]{Asana Math}
\usepackage{siunitx}
\begin{document}
\noindent
test 1234567890 test\linebreak
test 1 234 567 890 test\linebreak
test 1\,234\,567\,890 test\linebreak
test 1 234 567 890 test\linebreak
test \num{1234567890} test\linebreak
test
\noindent
hallo z.B. tschüss\linebreak
hallo z. B. tschüss\linebreak
hallo z.\,B. tschüss\linebreak
hallo z. B. tschüss \linebreak
hallo
\end{document}
Thanks
Toscho
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