- Support ``diff -b'' ( http://identi.ca/notice/44835177 )
- Support ``Index:'' as a spec of the filename. See patch(1p).
- Support indented diffs. See patch(1p), near where it speaks of ``Index:''.
- Support detection and mangling of things like:
  Mercurial:
  diff -r 1ac7f9ae51e1 src/difffilter.c

  Git:
  diff --git a/sunrise-commit b/sunrise-commit
  index 3e849a6..218b708 100755
- Write tests for the mangle_condense() functionality.
- Implement http://dev.gentoo.org/~vapier/clean-patches
