Package description is corrupted when a line starts with "From "

[jobec]

When a wheel is build and the file METADATA is written, all lines starting with From are prefixed with a >. For example, this line of my README file is changed from

From a logging config dictionary

into

>From a logging config dictionary

Turning it into invalid reStructuredText. This description ends up in the file DESCRIPTION.rst and eventually turned my package description on PyPi into garbage.

I traced the issue back to this specific line in the standard python email.generator module.

Of course, rewriting that section title fixes things, but this is one hell of a nasty bug to bump into. Nobody expects his package description to be handled like and email 🤔

[jobec]

Combined with pypi/warehouse#2170 this is quite a P.I.T.A.

[dholth]

Can we simply pass mangle_from=False to the Generator()

[agronholm]

This has already been fixed in master (3e10c5f).

[agronholm]

Duplicate of #178.