This is actually pretty neat, specifically the part about indexing the executables available in your path and turning them into macros. I was underwhelmed at fi

This is actually pretty neat, specifically the part about indexing the executables available in your path and turning them into macros. I was underwhelmed at first because I thought you manually implemented each program. I can't really imagine a use case for this for me (bash! But with parens!) but still very neat idea and cool execution.