https://kilthub.cmu.edu/articles/Supporting_Selective_Undo_in_a_Code_Editor/6470474/files/11899031.pdf See his github repo for more details on the implementation. Exemple: https://github.com/yyoon/azurite-eclipse/blob/develop/edu.cmu.scs.azurite/src/edu/cmu/scs/azurite/model/undo/SelectiveUndoEngine.java
https://kilthub.cmu.edu/articles/Supporting_Selective_Undo_in_a_Code_Editor/6470474/files/11899031.pdf
See his github repo for more details on the implementation. Exemple:
https://github.com/yyoon/azurite-eclipse/blob/develop/edu.cmu.scs.azurite/src/edu/cmu/scs/azurite/model/undo/SelectiveUndoEngine.java