> But I do find, in the vocabulary and
> index, words starting with tz are sorting after quatrillo con coma (it
> goes z, tresillo, quatrillo, quatrillo con coma, tz). So even for this
> text, a tz ligature is marginal.
^^^^^^^^
irrelevant to the sorting issue
Whether this text element is spelled "tz" or "t-ezh" or something
else, and whether the characters are ligated or not, is irrelevant
to the issue of sorting the "tz" at the end of lists. That
is handled by a different mechanism than character encoding,
and any such sequences as "quatrillo con coma" or "tz" which
need to be handled as units simply get contractions defined
for them in the collation element weighting tables.
--Ken
