Re: Image-conversion shims

[Eli Zaretskii]

> From: Lars Ingebrigtsen <address@hidden>
> Cc: address@hidden,  address@hidden
> Date: Mon, 30 Sep 2019 15:42:11 +0200
> 
> Eli Zaretskii <address@hidden> writes:
> 
> > I don't think I understand why we can't put the association in
> > auto-mode-alist before running "gm convert".  Please elaborate why.
> 
> If we put (say) .webp into auto-mode-alist, but we can't read .webp
> files, then image-mode will end up issuing an error when called on these
> files.

I thought when image-mode is invoked, the external converter is called
automagically, no?

> Besides, what formats "gm convert" supports changes over time.  By
> consulting it, auto-mode-alist will be automatically updated without us
> having to do anything.

Yes, but I think it's better to have a solution that is 99% correct
and simple, rather than one that is 100% and much more complex.  After
all, this is somewhat obscure use case, at least for now.

> > Not "do nothing", but display an error message saying this image
> > format is unsupported, IMO.
> 
> Yup.  I meant "do nothing" in the image-mode context, which means "show
> the data as raw bytes and signal an error".

Right.