Break up long words and URLs

[suresttexas00]

Is there a way to break up long words or URLs in the source rst documents that will still allow the (link) to be displayed as a single unit. For instance, I have a long link I want to break into two lines in my Python source code (part of a doc string). I also want the resulting RST document to have the line break (for readability without scrolling on smaller screens).

The source:

        :Valid 'blockid' values:

           http://wayback.archive.org/web/20151023030926/https://gist.
           github.com/thinkofdeath/5110835

how it displays:

How I would like the same code displayed (or a way to break it up to produce this display):