Comment 10 for bug 1652340

AFAIU it's too late to propose a new extension (or any other (internal) solution wrt the topic of text layout in legacy files as described) to be included in the upcoming release. I'll keep working on improving what is there in the repo, but won't further update the details in the report here at launchpad. If someone of the bug team thinks this should be considered for a bug-fix release (if one is actually happening), feel free to add a milestone (otherwise, I'll probably close the report after the final release is out).