"Jay Soffian" [off-list ref] writes:
I stuck this in my config and it works-for-me:
[format]
headers = \
"MIME-Version: 1.0\n\
Content-Type: text/plain; charset=UTF-8\n\
Content-Transfer-Encoding: 8bit\n"
I suspect that you shouldn't do this. This would badly interfere both
with existing format-patch behaviour that adds these MIME-Version and
Content-Type headers by looking at the contents, and with recent
format-patch fix 6bf4f1b (format-patch: generate MIME header as needed
even when there is format.header, 2008-03-14) to make the detection based
on contents (and presense of format.headers).