Claude Code v2.1.47

What's changed

• Fixed FileWriteTool line counting to preserve intentional trailing blank lines instead of stripping them with trimEnd().
• Fixed Windows terminal rendering bugs caused by os.EOL (\r\n) in display code — line counts now show correct values instead of always showing 1 on Windows.
• Improved VS Code plan preview: auto-updates as Claude iterates, enables commenting only when the plan is ready for review, and keeps the preview open when rejecting so Claude can revise.
• Fixed a bug where bold and colored text in markdown output could shift to the wrong characters on Windows due to \r\n line endings.
• Fixed compaction failing when conversation contains many PDF documents by stripping document blocks alongside images before sending to the compaction API (anthropics/claude-code#26188)
• Improved memory usage in long-running sessions by releasing API stream buffers, agent context, and skill state after use
• Improved startup performance by deferring SessionStart hook execution, reducing time-to-interactive by ~500ms.
• Fixed an issue where bash tool output was silently discarded on Windows when using MSYS2 or Cygwin shells.
• Improved performance of @ file mentions - file suggestions now appear faster by pre-warming the index on startup and using session-based caching with background refresh.
• Improved memory usage by trimming agent task message history after tasks complete
• Improved memory usage during long agent sessions by eliminating O(n²) message accumulation in progress updates
• Fixed the bash permission classifier to validate that returned match descriptions correspond to actual input rules, preventing hallucinated descriptions from incorrectly granting permissions
• Fixed user-defined agents only loading one file on NFS/FUSE filesystems that report zero inodes (anthropics/claude-code#26044)
• Fixed plugin agent skills silently failing to load when referenced by bare name instead of fully-qualified plugin name (anthropics/claude-code#25834)
• Search patterns in collapsed tool results are now displayed in quotes for clarity
• Windows: Fixed CWD tracking temp files never being cleaned up, causing them to accumulate indefinitely (anthropics/claude-code#17600)
• Use ctrl+f to kill all background agents instead of double-pressing ESC. Background agents now continue running when you press ESC to cancel the main thread, giving you more control over agent lifecycle.
• Fixed API 400 errors ("thinking blocks cannot be modified") that occurred in sessions with concurrent agents, caused by interleaved streaming content blocks preventing proper message merging.
• Simplified teammate navigation to use only Shift+Down (with wrapping) instead of both Shift+Up and Shift+Down.
• Fixed an issue where a single file write/edit error would abort all other parallel file write/edit operations. Independent file mutations now complete even when a sibling fails.
• Added last_assistant_message field to Stop and SubagentStop hook inputs, providing the final assistant response text so hooks can access it without parsing transcript files.
• Fixed custom session titles set via /rename being lost after resuming a conversation (anthropics/claude-code#23610)
• Fixed collapsed read/search hint text overflowing on narrow terminals by truncating from the start.
• Fixed an issue where bash commands with backslash-newline continuation lines (e.g., long commands split across multiple lines with \) would produce spurious empty arguments, potentially breaking command execution.
• Fixed built-in slash commands (/help, /model, /compact, etc.) being hidden from the autocomplete dropdown when many user skills are installed (anthropics/claude-code#22020)
• Fixed MCP servers not appearing in the MCP Management Dialog after deferred loading
• Fixed session name persisting in status bar after /clear command (anthropics/claude-code#26082)
• Fixed crash when a skill's name or description in SKILL.md frontmatter is a bare numbe