[BZ#520654] add --export-id paramater
Submitted by Jakub Steiner
Link to original bug (#520654)
Description
Inkscape allows to export a specific area by passing an object id on the commandline. This is extremely useful for 'cropping' out a large SVG into smaller chunks. The reason I humbly request this to be added in rsvg as well is that inkscape is a rather unreasonable dependency for doing build-time rendering for an icon theme. Depending on rsvg is much more sane.
The two options that are interesting:
-i, --export-id=ID The ID of the object to export -j, --export-id-only Export just the object with export-id, hide all others (only with export-id)
the -x -y -w -h parameters should be respected even when -i is passed.