Sorry, writing to the list since trac claims to have sent me a
password but apparently hasn't yet...
This bug happens for anyone without text_flowed set. In that case
s->prefix is set to "> " and then another space is added in
print_flowed_line. Before, there were complaints about getting ">foo"
for f-f; now we get "> foo" (two spaces).
print_indent is applying s->prefix (i.e. Prefix, indent_string) for the
outermost level of quoting, i.e. the one added by "reply". Then it's
applying a literal '>' for each level of quoting in what you're
replying to. Then it's adding a literal space. This seems very
confused to me. Maybe it should apply s->prefix each time?
Meanwhile, I'm using this. I imagine it will still lead to funny
quoting, like "> >>> foo", but at least it's better than nothing.