Right now it seems, that there is no option to run the BlueprintDiffTool from Commandline. This inherits several issues:
- It is not possible to register it as a Mergetool for calling it during a running Merge
- Git LFS seems to make it useless. It seems the Mergetool has only access to the linkfiles as you can only select revisions but not actual files.
By providing a commandlinetool with parameter support like
Tool.exe <left> <right> <base> <merge>
- It is possible to register it as Mergetool
- Git LFS Smudgefilter is executed before calling the Mergetool, making it possible to access the correct files.
PS: I found older Answerhub-Posts hinting that this was possible once calling UE4Editor.exe with those parameters. But as it seems, this is not possible anymore?