Sorry if I'm missing something, but can't you simply put
\XeTeXdashbreakstate 1
at the start of your document? That tells XeTeX that line-breaks are
permitted after dashes.
John
----- Original Message -----
From: "Arthur Reutenauer" <arthur.reutena...@normalesup.org>
To: "Unicode-based TeX for Mac OS X and other platforms" <xetex@tug.org>
Sent: 13 January 2011 14:55
Subject: Re: [XeTeX] Unicode-named macros in XeTeX
I anticipate the problem of having to actually generate the em-dash
character instead of recursively calling the em-dash macro inside the
macro, so please mention this if you have a solution for me, but I’m
already stumped at the “how to call a macro ‘—’” part.
You need to make the em-dash character active:
\catcode`\—=13
and then define the macro:
\def—{\char"2014\discretionary{}{}{}}
Note that the macro is not called recursively; “\char"2014” simply
inserts the character in the current font.
Arthur
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