[Tracker-discuss] [issue147] Current email headers corrupt mail reader display

[Stephen Turnbull]

Stephen Turnbull added the comment:

It occurs to me that this looks like a problem that has been reported on the GNU
Mailman lists.

The issue there happens because the Python email module likes to fold lines and
use a TAB character as the leading character on the second line.  Some MUAs may
add more space or a Re:, causing the header to fold at an earlier column.  This
then adds another TAB when it goes through Mailman, etc.

It might help (and certainly would aid readability until the full cause of the
expanding headers is understood) if instead of using TABs to creating folding
whitespace, the email module was told to use a SPACE for that.

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