Git rebase interactive drop vs deleting the commit line

Question

What is the difference from drop in the Git interactive rebase and just deleting the line of the commit?

Answer 1

There is no difference by default; it's just another way to say the same thing.

But, if you set rebase.missingCommitsCheck to warn or error, then removing a line will trigger a warning (useful for detecting a messed-up cut-and-paste).

Then setting the line to drop explicitly tells Git that you want to drop that commit, and no warning is shown for it.