Re: [PATCH] mailinfo: strip CR from base64/quoted-printable email

Đoàn Trần Công Danh  [off-list ref] writes:

When an SMTP server receives an 8-bit email message, possibly with only
LF as line ending, some of those servers decide to change said LF to
CRLF.

Some other SMTP servers, when receives an 8-bit email message, decide to
encoding such message in base64 and/or quoted-printable instead.

encoding -> encode

If an email is transfered through those 2 email servers in order, the
final recipients will receive an email contains a patch mungled with
CRLF encoded inside another encoding. Thus, such CR couldn't be dropped
by mailsplit. Such accidents have been observed in the wild [1].

Let's guess if such CR was added automatically and strip them in
mailinfo.

[1]: https://nmbug.notmuchmail.org/nmweb/show/m2lf9ejegj.fsf%40guru.guru-group.fi

Signed-off-by: Đoàn Trần Công Danh <redacted>
---

 I'm not sure if guessing the heuristic to strip CR is a good approach.
 I think it's better to pass --keep-cr down from git-am.
 Let's say --keep-cr=<yes|no|auto>

It matches my instinct to tie this with the existing --keep-cr
option, even though I admit that I haven't thought things through.

.