mongod does not accept dots in key name

[samnet]

Problem: library names with a "." in them cause the mongodb server to bug
Example: "data.table"
Reason: see title.
Explanation: https://stackoverflow.com/questions/12397118/mongodb-dot-in-key-name
Fix to be done: pre process library names. Deleting dots is not good, since e.g., both data.table and datatable exist. how about we replace "." with "DOT"?