A Claude Code environment variable, read out of the shipped bundle.
It has been in the build since v2.1.144, including the newest one read.
Set to 1 to repaint the entire screen on every frame in fullscreen rendering instead of sending incremental updates. Use this if fullscreen mode shows stale or misplaced text fragments. Claude Code enables this automatically for background sessions and agent view on Windows
Environment reads go through one shared accessor; same variables, same behaviour.
found in this entry's text
First cited
2
The earliest release whose published evidence quoted CLAUDE_CODE_ALT_SCREEN_FULL_REPAINT was v2.1.228, 11 Aug 2026. That is the oldest release this project wrote about it, so it is a floor on the name's age and not the release that introduced it. It is not a presence reading: which builds carried the name is the table below.
ReleaseDateThe span that was quoted
v2.1.22811 Aug 2026CLAUDE_CODE_ALT_SCREEN_FULL_REPAINT
v2.1.30520 Oct 2026CLAUDE_CODE_ALT_SCREEN_FULL_REPAINT is set, so every frame repaints the screen and would send the picture again each time
Presence across releases
1
BuildsHow manyDatesReading
v2.1.144 – v2.1.308143 builds → 22 Oct 2026 ◆in the build
Build by build
143
One row per release since the first build this name was read out of. Absent means the build was read and the name was not in it, never mined means no bundle for that release was ever archived, and a declared type or a default is only ever what that release's own bundle stated.
v2.1.29914 Oct 2026·presentverdict: present · bool
v2.1.30014 Oct 2026·presentverdict: present · bool
v2.1.30115 Oct 2026·presentverdict: present · bool
v2.1.30216 Oct 2026·presentverdict: present · bool
v2.1.30318 Oct 2026·presentverdict: present · bool
v2.1.30419 Oct 2026·presentverdict: present · bool
v2.1.30520 Oct 2026·presentverdict: present · bool
v2.1.30621 Oct 2026·presentverdict: present · bool
v2.1.30721 Oct 2026·presentverdict: present · bool
v2.1.30822 Oct 2026·presentverdict: present · bool
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the environment variable does. All environment variables.
