The command line diff command is capable of displaying the differences of a changeset or a branch in text mode:
D:\Unreal Projects\VehicleAdvance>cm diff cs:11
C "VehicleAdvance.uproject"
But what if you want to get a graphical window with the changes inside the changeset? Well, there're a few parameters for the "plastic.exe" tool that will help you with that.
Changeset diff
The following command produces the diff view at the image below.
plastic --showchangeset=cs:11@VehicleAdvance@localhost:8087
Branch diff
The following command produces the diff view at the image below.
plastic --showbranch=br:/main/task163@VehicleAdvance@localhost:8087
Changeset Vs. Changeset diff
The following command produces the diff view at the image below.
plastic --diffchangesetsrc=cs:13@VehicleAdvance@localhost:8087 --diffchangesetdst=cs:15@VehicleAdvance@localhost:8087