Best practices for submitting tree-wide changes

In some cases, the same change should be made to many parts of the codebase. This includes things like adding set -o pipefail to shell scripts or moving command substitutions to their own commands. Should one send a single patch that makes all the changes, or should one send a bunch of tiny patches? Preferably, the answer should be added to the documentation so people don't need to ask again :) -- Sincerely, Demi Marie Obenour (she/her/hers)