GitHub Copilot CLI vv1.0.49

Summary

2026-05-18 - postToolUse hook additionalContext is now injected as a system message for the model instead of being silently discarded - Mouse clicks in the prompt correctly position cursor when inp...

Release Notes

2026-05-18 - postToolUse hook additionalContext is now injected as a system message for the model instead of being silently discarded - Mouse clicks in the prompt correctly position cursor when input contains wide characters (CJK, emoji) - Add /chronicle search subcommand to search all session content by keyword or topic - /user switch reuses the fetched user list and shows a loading spinner on first open - MCP servers using static OAuth clients correctly persist registration for token refreshes - Add support for running the CLI on Alpine Linux (musl libc) - Add /exit print option to print the session to the terminal before exiting - Add /rubber-duck command to get an independent critique of the agent's current work - Add /session id subcommand to display the current session ID and copy it to the clipboard - Add auth.redirectPort config option for MCP servers to pin the OAuth callback to a fixed port - Add /memory on|off|show slash command to enable, disable, or view memory status (persistent) - Add copilot plugin update --all to update all installed plugins at once - Add /rubber-duck command to invoke the rubber duck agent for an independent critique (experimental) - Input prompt collapses to a single line when empty and grows naturally as you type - File diffs are correctly reported to ACP clients for all edit tool types - Repo hooks in .github/hooks/ now load in prompt mode (-p) when the folder is already trusted - Fix extra line in timeline entries - Box drawing and block characters render correctly on Windows terminals not using UTF-8 code page - MCP server configurations with no args field are now accepted and treated as an empty args list - Document attachment paths are included in context so the agent can reference pasted file paths, including Windows Copy as path inputs - MCP stdio servers now display type as 'stdio' instead of 'local' for consistency - Progress bar indicator now displays correctly in tmux sessions - Experimental slash commands are now anno

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