Hello Bruno,
On Sat, 2016-08-20 at 14:04 -0500, Bruno Wolff III wrote:
> I was surprised to find endash and emdash were not graphic characters
> in 
> en_US. I'm not sure if this is correct behavior, a bug in postgres or
> a 
> bug in my OS' collation definitions?
>
> For example:
>
> Dash:
> area=> select '-' ~ '[[:graph:]]' collate "en_US";
>  ?column? 
> ----------
>  t
> (1 row)
>
> Endash:
> area=> select '–' ~ '[[:graph:]]' collate "en_US";
>  ?column? 
> ----------
>  f
> (1 row)
>
>
> Emdash:
> area=> select '—' ~ '[[:graph:]]' collate "en_US";
>  ?column? 
> ----------
>  f
> (1 row)
>
>
You can't use  (emdash) or  (endash)?
Or their hex equivalents. See the Unicode chart.
HTH,
rob