#851 problem with keywords containing other keywords as subwords

[Anonymous]

I have one keyword "p" and another one "nip" (for dynamical groups). This confuses jabref:
- All entries for the group nip are also listed in the group p
- If an article is in group "nip" and one selects "Assign exclusively to group nip" in the drop down menu, then the "p" gets removed and "nip" gets added, resulting in keywords "ni, nip".
(Maybe similar things happen on other occasions.)