On an IBMi system, STRSEU can only work with source members, right? No ability to interact with stream files directly.
Just thinking in the context of tracking RPG/CL/DDS source behind Git as stream files.
Assuming one wanted to use STRSEU, I can only think of this process while still tracking changes behind Git:
Open up member in SEU
Make changes, save, compile, test.
CPYTOSTMF to IFS file in tracked Git directory
Commit change and other Git things.
Proceed to push live...
Given that SEU hasn't been supported for years at this point, I'm fairly skeptical that editing stream files directly is possible. But am really just checking there isn't some workaround (besides the above) I'm unaware of.
Try this: From the command line
When you see the file you want to edit listed, edit it with option 2
You gonna need to learn the basic options valid on this editor, press F1 for help.