FYI, `grep -l` will print just the matching filenames, no need for the sed/sort ...

ninkendo 26 days ago | parent | context | favorite | on: Everything You Never Wanted to Know About Linker S...

FYI, `grep -l` will print just the matching filenames, no need for the sed/sort -u. `git grep` and `rg` also support this option. (I say this because I also used to overcomplicate this in my typical usage.)