TIL `make blah` works if you have blah.<some file extension Make understands> EVEN WITHOUT A MAKEFILE.
e.g., if you have blah.c and do `make blah`, it'll run `cc blah.c -o blah`:
(h/t @kellerfuchs for this tidbit.) https://awoo.space/media/O1Jt4x3t2msjaLXrnuc