Passing image dimensions in image field magic tag does not work

[Shelob9]

I tested the image field magic tags after user in this support thread was having troubles getting them to work.

In my testing with an image field called 'image' {@image._src.thumbnail} and other magic tags with a register image size returned URL of the right file size. But{@image._src.150x150}, {@image._src.15x15} etc, just returned the full-size URL with no resizing:(

[DavidCramer]

I'm adding these to the autocomplete in the templates so I'll take a look at it.