Sebastian Fischmeister <sfischme@uwaterloo.ca> writes:

> GNU Emacs 24.3.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.12.2) of
> 2014-06-11 on var-lib-archbuild-staging-x86_64-jgc
>
> ~$ notmuch --version
> notmuch 0.18.1
>
> What happens is that emacs invokes inkscape to do something to the svg.
>

I wonder if this is specific to the way emacs is compiled on arch.  I
just deleted inkscape and the image you sent me still renders fine on
Debian testing, same emacs and notmuch version.

Out of curiousity, is your emacs linked to libxml2?

It could also be something to do with mime type configuration, which is
a bit of an impenetrable thicket to me.

d