I am looking for a small extension to :TOhtml and I wonder if it can be done already, extists as a plug-in or if this is an itch I will have to scratch.
This is what I want: I have a file, let's say myapp.c, which should be converted to (X)HTML with syntax highlighting intact. So far so good, it can be done already, *but* I would like to first run a diff against another file (maybe myapp.c.old) and get lines that have been added or modified to have a slightly different background color (light grey, if I use a white background for instance). It would be an added bonus if I could run a diff against some command output (hg diff, in my case). I've searched a bit both on vim.org and via Google but so far not been able to find anything (quite possibly due to the fact that I'm using suboptimal search terms). I don't think I'm the only person in the world who wants to be able to do this, and I'm hoping somebody on the list can point me in the right direction.
