Content-type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-MIME-Autoconverted: from 8bit to quoted-printable by Qremote @QSMTP_VERSION@ at foo.bar.example.com

To force recoding: =E2=82=AC=E2=82=AC

lines with whitespace and safe characters, should trigger the "add one mo=
re character" branch in recode_qp().

 a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a=
 a a a a a a a a
a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a=
 a a a a a a a a a

The same with unsafe characters so this doesn't trigger falsely:

 =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D=20=
=3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D=
 =3D =3D =3D =3D =3D =3D =3D =3D =3D
=3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D=
 =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D =3D=20=
=3D =3D =3D =3D =3D =3D =3D =3D =3D =3D

Ok, this time with UTF8 data:

 =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=
=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC=
 =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=
=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC=
 =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC
=C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=
=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC=
 =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=
=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC=
 =C3=A4 =C3=B6 =C3=BC =C3=A4 =C3=B6 =C3=BC
.