On 2016-01-21 at 18:08:32 +0100, Patrick Gundlach wrote:
> Hello all,
>
> I am using LuaTeX 0.79.1 and use
>
> local foo = img.scan({filename = "foo.tiff"})
>
> but this fails with
>
> !LuaTeX error: internal error: unknown image type (2)
> ==> Fatal error occurred, no output PDF file produced!
>
>
> Is there a way to prevent LuaTeX from stopping the whole process? Is there a
> function like
>
> can_you_handle_this_imagetype(filename="foo.tiff")
Luigi suggested to mimic file(1). Since the number of graphic file
formats supported by pdftex/luatex is quite small I'm wondering
whether img.scan() can't check itself whether the magic number is
appropriate and return false otherwise.
Then one could write
local foo = img.scan({filename = "foo.tiff"})
if foo then
...
end
Regards,
Reinhard
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