On Thu, 5 Mar 2020, demioben...@gmail.com wrote: > >Synopsis: mail.local(8) corrupts messages where `>From ` follows blank ... > >Description: > If a message contains a blank line followed by a line matching the > regex `>+From `, mail.local(8) fails to escape the second line. This > makes it impossible to distinguish the case where a blank line is > followed by a line starting with `From ` and where a blank line is > followed by a line starting with `>From `. > >How-To-Repeat: > Send a message to oneself containing: > > ``` > some text here > > >From this should be escaped but is not > ``` > >Fix: > mail.local(8) needs to consider lines that match `^>*From ` to need > escaping if they follow a blank line, not just lines that start with > `From `.
Nope. The unix mailbox format** does not reversibly "quote" a "From " but rather irreversibly mangles them. A handful of tools have tried changing the interpretation but that's merely made the situation worse by making behaviors inconsistent and mangling a different set of messages. If you need a format that doesn't mangle this sort of content, then Don't Use UNIX mailbox format. Philip Guenther Unix Email Greybeard ** it's sometimes called the BSD format, but it predates BSD
