[luatex] Why is --progname needed?

[Taco Hoekwater]

Manuel Pégourié-Gonnard wrote:
> Hi,
> 
> mpg at roth:~% luatex --ini
> kpathsea mode needs a --progname or --fmt switch
> 
> Why can't the progname be taken from the invocation name in INI mode, just as
> pdftex does?

I forget. Luatex has the added complication that it is possible
to _not_ initialize kpathsea, but looking at it now it seems that
insisting on a progname was an unneeded restriction. Maybe.
I'll double-check, tomorrow.

Best wishes,
Taco