On Wed, Jun 02, 2021 at 11:34:41AM -0400, Konstantin Ryabitsev wrote: > While it's not *wrong* (the 78-character limit is from a very old RFC), I'm > curious if this is intentional or just an oversight. My guess is that this dates back to 5012699d98 (send-email: handle multiple Cc addresses when reading mbox message, 2009-02-14), which unfolds all multi-line headers, probably so that parsing the header can be done line-wise without having to keep track of whether you are parsing a continuation line or not. Perl's Mail::Header [1] looks to have support for folding a header across multiple lines, but I'd just as soon defer to the Perl experts around here for help using it :). Thanks, Taylor [1]: https://metacpan.org/pod/Mail::Header
