I've just checked in code that renames several mesh related elements:

<meshGradient> -> <mesh> <meshRow> -> <meshrow> <meshPatch> -> <meshpatch>

It also removes most of the experimental smoothing algorithms, leaving only the bicubic smoothing algorithm which can be selected using the 'type' attribute.

These bring Inkscape's mesh implementation inline with the SVG Working Groups current mesh syntax (the editor's draft is not yet updated).

Note: this code change breaks existing Inkscape SVG files with mesh gradients. The attached perl script will update files to the new spec.

Tav