Possible to implement visual block mode editing?

[dreadwail]

I noticed that visual block mode editing is not available as part of this plugin. Is that possible to implement?

[takikawa]

I think it is probably possible to implement, but not easy. DrRacket's selection model doesn't easily allow selection of blocks like vim.

A related change that would be nice is to make the insertion point more like vim (rather than being in-between characters).