Hello, This third revision adds some input validation, to detect invalid output coming from user scripts used with 'git send-email'. It also adds a test to ensure multiline (folded) headers are correctly supported. Thanks, Maxim Cournoyer (3): send-email: extract execute_cmd from recipients_cmd send-email: add --header-cmd option send-email: detect empty blank lines in command output Documentation/config/sendemail.txt | 1 + Documentation/git-send-email.txt | 8 +++ git-send-email.perl | 82 +++++++++++++++++++++++------- t/t9001-send-email.sh | 56 +++++++++++++++++++- 4 files changed, 128 insertions(+), 19 deletions(-) base-commit: 7580f92ffa970b9484ac214f7b53cec5e26ca4bc -- 2.39.2