Some nice ideas in there.

Only the “markdownquote” thing is kinda pointless, especially since they mention it’s mainly used in vim. Because vim can do exactly that already without the need of an external script. Do ctrl+v, mark the lines you want, press “I” (capital i), insert the desired thing, press esc and voila… all the selected lines are now prepended with the desired thing.

edited to make my comment sound less harsh: Nothing wrong with building your own solution if that feels better to oneself though :-)

Ousterhouts book was very much an eye opener for me when i stumbled over it some years ago.

All those recommendations from the “clean code” corner always felt a tad off to me, but i couldn’t put the finger on it. Then i read this small and nicely written book an suddenly the fog cleared up.

Oh wow, people like that really do exist.