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2 pages for claude_code_force_sync_output.
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Environment variables
Claude Code CLI · in the page
env-vars
…| | `CLAUDE_CODE_FORCE_SYNC_OUTPUT` | Set to `1` to force-enable DEC private mode 2026 [synchronized output](ht…
Configure your terminal for Claude Code
Claude Code CLI · in the page
terminal-config
…nchronized output but isn't auto-detected, such as Emacs `eat`, set [`CLAUDE_CODE_FORCE_SYNC_OUTPUT=1`](/docs/en/env-vars) to stop the flicker without changing renderers. Run `/tui fullscreen` to swi…