Just a question for anyone that can answer it. Is it possible to use git grep along sed or an equivalent in order to find and change a multiline pattern. I cannot really find an adequate answer in any documentation on eiter utility. This would allow me to find ifndef/define pairs that make up the header guards and edit them in one command. My first attempt ran into the issue of changes ALL defines in files under boards/ which created problems because i could not fix the ifndefs and defines simultaneously