Treat memory as a file with a name.

[Steve Teale]

> If it's the same librsvg as below, then it looks like it has an 
> API function which can also load a SVG from memory:
>
> https://developer.gnome.org/rsvg/2.40/RsvgHandle.html#rsvg-handle-new-from-data
>
> To answer your original question, I think the best way to do 
> this is to create a pipe on the filesystem. Once created, you 
> can feed data through it without touching the disk.

Thanks Vladimir,

My librsvg is 2.36, but rsvg-handle-new-from-data pre-dates that, 
so it should be good. Thanks for the link - I had clearly been 
looking at some crap documentation.

Thanks for the pipe idea too - it will come in handy one day, and 
I'd completely forgotten about pipes.

Steve