GitHub Copilot CLI v1.0.49

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...

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 annotated with "(experimental)" in the help dialog and command picker - Auto-update downloads the smaller platform-specific package instead of the universal one when available - Auto-link GitHub issue and PR references (owner/reponumber) in assistant responses - Prompt mode (-p) automatically loads workspace MCP sources when the current folder is already trusted - Experimental: /mcp search command to search and install MCP servers from registry - Experimental: Tool search with deferred loading for MCP and external tools - Add "None" reasoning effort option to disable model reasoning in the reasoning effort picker - Add COPILOTPLUGINDIRONLY environment variable to disable automatic plugin discovery, enabling deterministic plugin sets when using --plugin-dir - Copying text from the scroll view joins soft-wrapped lines without extra newlines or indentation - Cursor positioning in input fields works correctly with wide characters (CJK, emoji) - Hooks (preToolUse, postToolUse, subagentStart, subagentStop) now fire correctly for sub-agent tool calls - Plugins loaded via --plugin-dir now correctly register their agents as available task(agenttype=...) subagents in prompt mode - Memory storage correctly limits available scopes when no repository context is present - --plugin-dir and --additional-mcp-config now work in --server / --headless mode - Content-filtered model responses now display an explanation instead of a blank assistant turn - PromptFrame UI now renders inside tmux when the outer terminal is ghostty, WezTerm, or kitty (detected via tmux list-clients). - MCP OAuth token lookups are correctly scoped to the active session - Memory permission prompts now name who can see a stored memory: user scope or the specific owner/repo for repository scope. Timeline entries also show the scope ((for user) / (shared with repository collaborators)). - Reduce PowerShell syntax errors on Windows by avoiding && chaining instructions when using legacy PowerShell 5.x