Follow-up Comment #2, bug #67065 (group groff):

I wasn't sure what Ted meant by his "push back" parenthetical until I tried to
simulate a simple next-output-line trap by setting a page-location trap
immediately below the current output line.

$ cat quoted-email
.de prefix
>> 
..
.ll 4i
.
>> 
.wh \n[nl]+1u prefix
Below I'll explain why the bet-it-all-on-red strategy
has numerous advantages over any other possible strategy.
$ groff -a quoted-email
<beginning of page>
>> Below I'll explain why the bet-it-all-on-red strategy has numerous
advantages >> over any other possible strategy.

That is, by the time the macro is invoked, there is already output on the next
line.


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