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It replaces Ctrl+R with an intelligent full-screen search interface that considers your current directory, recent commands, and command exit status.\n\n## Installation\n\nUse the upstream install or setup path that matches your environment:\n- brew install mcfly\n- brew uninstall mcfly\n- Run git clone https://github.com/cantino/mcfly and cd mcfly\n- Run cargo install --path .\n\nRequirements and caveats from upstream:\n- time units **must** accompany all time span values.\n\nBasic usage or getting-started notes:\n- in real time. The goal is for the command you want to run to always be one of the top suggestions.\n- The directory where you ran the command. 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