[texhax] Hyphenation problem

[Philip TAYLOR]

The problem is the explicit hyphen, after which
TeX will not hyphenate further.  I would suggest
defining macros which generate "3-pentanone"
(visually) but which in practice generate
"3-\hskip 0 pt \relax pentanone"
which should be hyphenatable ...

\def \ThreeP {3-pentanone}
\def \threeP {3-\hskip 0 pt \relax pentanone}

\showhyphens {\ThreeP}
\showhyphens {\threeP}

\hyphenation {pent-a-none}

\showhyphens {\ThreeP}
\showhyphens {\threeP}

\end

Philip TAYLOR
--------
John Simmie wrote:

 > We need to hyphenate 'words' which already contain a hyphen as in
 > the name for a particular chemical
 > 3-pentanone
 > but  putting \hyphenation{3-pent-a-none} in the preamble does not work
 > as a global solution and neither does \hyphenation{pent-a-none}
 > I cannot find a solution in the usual places .... any notions?
 > Thanks, John
 >
 >                Dr. John M. Simmie
 > Chemistry Department & Environmental Change Institute
 >    National University of Ireland, Galway::Ireland