v2.1.132
Claude CodeSummary
This release introduces new environment variables for controlling session IDs and disabling the alternate-screen renderer, along with a visual hint for image pasting. Numerous bugs have been fixed, including issues related to session resumption, terminal scrolling acceleration in IDEs, and handling of special characters during text input.
New Features
- Added `CLAUDE_CODE_SESSION_ID` environment variable to the Bash tool subprocess environment.
- Added `CLAUDE_CODE_DISABLE_ALTERNATE_SCREEN=1` environment variable to opt out of the fullscreen alternate-screen renderer and retain conversation in the terminal's native scrollback.
- Added a "Pasting…" footer hint displayed while an image pasted via Ctrl+V is being read from the clipboard.
Bug Fixes
- Fixed external SIGINT (e.g., IDE stop button, `kill -INT`) not triggering graceful shutdown; terminal modes are now restored and the `--resume` hint is printed.
- Fixed an uncaught exception occurring when the terminal is closed or SSH disconnects mid-session on the native build.
- Fixed `--resume` failing with `no low surrogate in string` when a tool error truncation split an emoji; pre-corrupted sessions are now sanitized on load.
- Fixed `--permission-mode` flag being ignored when resuming a plan-mode session with `-p --continue` or `--resume`, and ensured plan mode is re-applied after `ExitPlanMode` within the same session.
- Fixed fullscreen mode showing a blank screen after laptop sleep/wake or Ctrl+Z/ `fg` until the next keystroke or stream output.
- Fixed cursor landing mid-grapheme on Ctrl+E/A/K/U/arrow keys when an Indic conjunct or ZWJ emoji wraps across lines.
- Fixed vim operators corrupting text containing decomposed (NFD) accented characters.
- Fixed pasting text starting with `/` silently swallowing the input or triggering an unknown-command reply.
- Fixed pasting dumping stray escape sequences into the prompt when focus events or mouse-tracking reports interleave with the bracketed paste.
- Fixed mouse wheel scrolling being too fast in Cursor and VS Code 1.92–1.104 due to an upstream xterm.js bug.
- Fixed scroll-wheel handling in JetBrains IDE 2025.2 terminals (resolved spurious arrow keys, wrong-direction events, and runaway acceleration).
- Fixed `/usage` Ctrl+S hanging when copying the stats screenshot to the clipboard on Linux/X11.
- Fixed `/terminal-setup` showing a contradictory error in Windows Terminal (Shift+Enter is natively supported there).
- Fixed `/effort` picker not reflecting the `CLAUDE_CODE_EFFORT_LEVEL` environment variable override.
- Fixed `/status` showing the wrong default model for some users.
- Fixed slash command autocomplete popup being capped at ~3–5 visible commands instead of scaling with terminal height.
- Fixed statusline `context_window` token counts reflecting cumulative session totals instead of current context usage.
- Fixed Alt+T (thinking toggle) not working on macOS terminals without "Option as Meta" enabled (iTerm2, Terminal.app defaults).
- Fixed dead keyboard input on Windows after re-opening a background session from `claude agents`.
- Fixed unbounded memory growth (10GB+ RSS) when an stdio MCP server writes non-protocol data to stdout.
- Fixed MCP servers that connect but fail `tools/list` silently showing 0 tools; they now retry once and show "connected · tools fetch failed" in `/mcp`.
- Fixed unauthorized claude.ai MCP connectors showing as "failed" instead of "needs auth", and headless `-p` mode retrying non-transient 4xx connection failures.
- Fixed Bedrock and Vertex 400 errors when `ENABLE_PROMPT_CACHING_1H` is set.
Improvements
- Improved visual consistency in slash command dialogs and `/login`, `/upgrade`, `/extra-usage` dialog spacing.
- Updated the `/tui fullscreen` startup banner to describe additional renderer benefits (lower memory usage, mouse support, auto-copy on select).