If we need to word-wrap a paragraph after a long formatted span,
write any ending markers before the newline (amends
280d679c55 ).
Break before a fragment if the whole thing is past the column limit;
in that case, write out any ending format markers before the newline.
And now we have test coverage: prepend characters one-at-a-time to a
line that already has a two-word formatted span at the end, and watch
it successively break after the span, in the middle, and then before,
while never putting a newline before the ending markers or failing to
write them.
Fixes: QTBUG-116927
Change-Id: I140e10d19a491cb599bf7ecf8514af866b5383f3
Pick-to: 6.6 6.5
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
(cherry picked from commit 908fc2e72b)
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
183ee5c177