[PATCH v3 0/3] send-email: add --header-cmd option

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