diffedit blank lines on Windows

[farnoy]

Description

Lines are disappearing as you scroll through them in diffedit

Steps to Reproduce the Problem

1. jj diffedit
2. Scroll down with down arrow

Expected Behavior

Lines should display as normal, just with selection indicated as a background color

Actual Behavior

(after unfolding the section and scrolling down twice)

Resizing the window does re-draw it and content is restored to the empty lines, but never to the line currently selected. Could be something to do with rendering the background highlight?

Specifications

• Platform: Windows
• Version: 0.22.0-67c2ae0a9e3e445f034a456b299e3f37c4dc4b93

Tried it on cmd.exe, Windows Terminal and alacritty, powershell and cmd.exe, I don't think this is anything to do with my environment.

[arxanas]

I'd guess it's caused by carriage returns rather than Windows itself (the lines are not entirely empty, as the newline icon has been rendered in the first column, immediately after what I suppose was a carriage return), and fixed by arxanas/scm-record@b2f18d5 and associated PR. This version (v0.4.0) was recently released and just needs to be bumped in jj, if you want to do it.

[farnoy]

I've had issues trying to build jj last time I tried, but let me have a stab at it