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113113## Configure tmux
114114
115When Claude Code runs inside tmux, two things break by default: Shift+Enter submits instead of inserting a newline, and desktop notifications and the [progress bar](/docs/en/settings-reference#terminalprogressbarenabled) never reach the outer terminal. Add these lines to `~/.tmux.conf`, then run `tmux source-file ~/.tmux.conf` to apply them to the running server:
115When Claude Code runs inside tmux, by default Shift+Enter submits instead of inserting a newline, and desktop notifications and the [progress bar](/docs/en/settings-reference#terminalprogressbarenabled) never reach the outer terminal. Add these lines to `~/.tmux.conf`, then run `tmux source-file ~/.tmux.conf` to apply them to the running server:
116116
117117```bash ~/.tmux.conf theme={null}
118118set -g allow-passthrough on