How to "expand" text in Vim, into a nice to read way?

Question

I work a lot with nested data structures, and many times I have to manually analyze them from the console. The problem is that they come printed all in one line.

Is there an easy way of re-structuring the display of a data structure based on {,[,],} and the comma, such that it will look like Ruby's pretty_print output?

Answer 1

:%s/\([{,]\)/\1\r/g
ggVG=
:set ft=ruby

wheeeee