4-space is our convention for indented blocks and should be used consistently.
The only exception is for C++ code which is tab-indented, as the engine code.
"but" doesn't seem correct in this context. I wonder how I missed this word.
Before: It is possible to emit signals to GDScript but calling the GDScript dummy object.
After: It is possible to emit signals to GDScript by calling the GDScript dummy object.
Rémi Verschelde