FORCE_COLOR=3 does not override 256-color rendering inside tmux
증상
Claude Code renders 256-color escape sequences inside tmux even when FORCE_COLOR=3 is set. The workaround is unsetting TMUX entirely (TMUX= claude).
원인
Agent encountered an unexpected state or unhandled error condition outside the standard error handling path.
해결법
Launch Claude Code with TMUX= unset:
TMUX= claude
예상 토큰 절약
이 에러로 삽질 시: 약 5,000~15,000 토큰 소비 이 해결법 참조 시: 약 500 토큰
출처
https://github.com/anthropics/claude-code/issues/37770
Source: https://github.com/anthropics/claude-code/issues/37770
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