[Tcsh] Edit command-line history with Unicode characters over 0x7fff

[Christos Zoulas]

Off-by-one! Fixed, thanks!

christos

> On Aug 17, 2021, at 11:57 AM, H.Merijn Brand <tcsh at tux.freedom.nl> wrote:
> 
> echo "T �� M € T ��" | cat

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