Hi,
Is there anyone out there who has a project where the publisher/community would like to see a diglot with just one column framed / bordered?
e.g. the Greek text (with or without interlinear) inside a border?

If so, there's an opportunity for your project to be used in the alpha-testing of a not-yet-merged feature.
Why?
Because I know that there are things not-yet-tested, and there are almost certainly some oddities, but nothing tests the code like *real* data.
I assume if you're interested in this, you'd prefer I get it working with actual, representative, data rather than just English-Greek or whatever I can dig up from the distributable test-cases.
Option 1: [If you're feeling brave]
Pull branch "borders" from github, and add to your ptxprint-mods.tex file \def\TextBorderColumns{L} (or R, as appropriate).
For those who are not THAT brave:
Option 2: [You have textborders set up, and you'd prefer them to be on just one column]
Option 3: [You've got a diglot interlinear, and it'd be lovely to have a text-border around it]
Option 4: [You've got a little USFM text, and you'd like to see it next to any open text, never mind complex things like interlinear]
Please make an archive of your project, submit it in the normal way and I'll try playing with it, and the conversation can start.
What I can guarantee:
1. Layout changes! Yey, joy. Sorry, the one-column text border shrinks the column by the border width and padding, so layout changes are inevitable.
2. The code will get into the main release eventually, even if no one wants to help find those bugs before it's crisis-time.
3. I won't publish it anywhere. Feel free to contact me off-list, and we can keep all discussions to email.
What I can't guarantee:
1. Chocolate teapots
2. World peace
3. Perfect results
4. Any time-scale
5. That my tests will find every last bug.
David Gardner
(SIL, Eurasia area, but not actually in a sensitive project.)