If we want to add this to the core it looks like I need to:

change the 

from mmseg.search import seg_txt_search,seg_txt_2_dict

to

try:
  MissingMmseg=False
  from mmseg.search import seg_txt_search,seg_txt_2_dict
except ImportError:
  MissingMmseg=True

and then wrap the second section in if not MissingMmseg

Then add to installation.doc the package info and why people
would want it.

Does anybody see anything else I would need to incorporate this patch?

Does anybody believe this patch should not go into core?

Note I have no idea how to write a test for it and the test is
conditional on having and not having the mmseg module.

-- rouilj