On 05/10/2017 11:43, Junio C Hamano wrote: > On Thu, Oct 5, 2017 at 6:30 PM, Jeff King wrote: > >> Mason wrote: >> >>> The patch header contains: >>> >>> Content-Type: text/plain; charset=UTF-8; format=flowed >>> Content-Transfer-Encoding: quoted-printable >> >> That looks right. Though I wouldn't be surprised if whatever generated >> the "flowed" also screwed up patch whitespace. >> ... >> If it does have the qp bits decoded, then I'd suspect that maybe there's >> whitespace damage caused by the MUA. > > I would be surprised if MUA that says format=flawed did _not_ mangle the patch. format=flawed :-) Did you write that on purpose? Anyway, it turns out that I had somehow managed to generate an invalid patch (with a spurious leading space in the 3+3 context lines); the quoted-printable mangling was, in fact, a red-herring. Doh! Sorry for the noise.