[luatex] bug: double quotes are not printed

[Philipp Stephani]

Am 11.06.2011 um 11:56 schrieb Mojca Miklavec:

> On Sat, Jun 11, 2011 at 02:49, Igor Kotelnikov wrote:
>> Dear sir/madam,
>> I noted that double qoutes are not printed if they are typed in source file
>> by double quotes  but not ligatures
> 
> ... if you use ISO Latin 1 encoding instead of UTF-8 (which is the
> expected behaviour).
> 
> Set up your editor to use UTF-8 and it will work fine.

shouldn't LuaTeX issue an error about an invalid code unit sequence in such cases?