re-executing self with different arguments

[Skaperen]

it turns out that sys.executable just always gives the engine path whether it was used in the command or not. there are 2 ways to run a Python script on POSIX. assuming the script is named "foo.py" and has been made executable with "chmod 755 foo.py". you can do "python3 foo.py" or "./foo.py". if "." is in the path list in the PATH environment variable then simply typing "foo.py" will also run it. what i am wanting is to determine whether the script was run directly or if the name or path to the engine was used. this could be difficult because hash-bang execution will still be running the engine and giving it the file path as the first argument and the typed arguments following that. so C level argv[] will look the same, either way. this is so i can re-run the script exactly the same way in a child process (i'm changing the arguments).