How to add additional text when sending an email with git send-email?

Question

I am sending patches using git send-email .

I want that the email sent with the patch to have some additional text added at the top, besid

Answer 1

Git 2.18 (Q2 2018) offers an alternative to --annotate or --compose for adding additional text when sending an email with git send-email.

See commit 04c4a4e (04 May 2018) by Drew DeVault (SirCmpwn).
Helped-by: Eric Wong (ele828).
^{(Merged by Junio C Hamano -- gitster -- in commit 89be19d, 30 May 2018)}

git-send-email: allow re-editing of message

When shown the email summary, an opportunity is presented for the user to edit the email as if they had specified --annotate.
This also permits them to edit it multiple times.

"git send-email" can sometimes offer confirmation dialog "Send this email?" with choices 'Yes', 'No', 'Quit', and 'All'.
A new action 'Edit' has been added to this dialog's choice.

As seen in git-send-email.perl:

# If the user decides they want to make further edits, -1 is returned and the
# caller is expected to call send_message again after the edits are performed.