In the original code, a for-else is used with wrong logic, so that if
there was a response ('no blank line between quoted message and
response') in the section, the loop would break and not execute the
else[1]. Unfortunately, the code that checks whether to include the
quoted text verbatim is inside the else clause.

Attached patch fixes this and reorganizes the code a bit. Also tracked
at http://psf.upfronthosting.co.za/roundup/meta/issue264