character entity for a protected hyphen

[Florian von Savigny]

Hi folks,

I seem to remember that MS Word had a hyphen character where
line-breaking was not allowed; it was called something like 'protected
hyphen', I think.

I have failed to find the corresponding ISO character entity (if there
is one); what I have found is:

in ISOnum.ent:

<!ENTITY hyphen SDATA "[hyphen]"--=hyphen-->

in ISOpub.ent:

<!ENTITY mdash SDATA "[mdash ]"--=em dash-->
<!ENTITY ndash SDATA "[ndash ]"--=en dash-->
<!ENTITY dash SDATA "[dash ]"--=hyphen (true graphic)-->

Does anyone know which is which? It seems quite clear that &ndash; and
&mdash; are not to be used attached to or inserted into words (I know
the notions from the TeXbook, where they are described as longer than a
hyphen), but can anyone describe precisely the features of &hyphen;
and &dash;? Is the latter what I am looking for?

Thanks for any assistance!

[Andreas Prilop]

Post by Florian von Savigny
I seem to remember that MS Word had a hyphen character where
line-breaking was not allowed; it was called something like 'protected
hyphen', I think.
Does anyone know which is which?

&#8209;
<http://www.cs.tut.fi/~jkorpela/dashes.html>