Claude Code v2.0.15

What: A new tool that enables Claude to ask users multiple-choice questions during task execution to gather preferences, clarify ambiguity, or make implementation decisions.

How to use:

// Claude can now use this tool to ask questions like:
{
  "questions": [
    {
      "question": "Which library should we use for date formatting?",
      "header": "Library",
      "options": [
        {"label": "date-fns", "description": "Modern, modular"},
        {"label": "moment", "description": "Widely used, large"}
      ]
    }
  ]
}

Details:

• Supports 1-4 questions per tool use with 2-4 options each
• Users can always select "Other" to provide custom text input
• Set multiSelect: true to allow multiple answers per question
• Includes navigation UI with question progress indicators
• Questions have a header (max 12 characters) for display in the progress bar
• Evidence: New tool definition at T6Q = "AskUserQuestion" at line 404665, tool implementation at line 405857 in function Tn1()

What: Async hooks now capture and track stderr output separately from stdout, providing better visibility into hook errors and warnings.

Details:

• Hook state now includes dedicated stderr field initialized as empty string
• New function $wA() at line 72330 adds stderr to async hook process tracking
• Hook registration function CwA() at line 72298 initializes stderr field at line 72318
• Stderr stream is now monitored alongside stdout for background hook processes
• Evidence: Previously hooks only tracked stdout, now both stdout and stderr fields exist in hook state (line 72318)

What: Plugin loading now uses structured error tracking with specific error types and detailed context, making it easier to diagnose marketplace installation issues.

Details:

• New error types: path-not-found (for missing component files) and generic-error (for other failures)
• Error objects include plugin name, source, path, and component type (commands/agents/skills)
• Function AD6() at line 223462 now accepts error array parameter and accumulates errors
• Each missing file is tracked with metadata: { type: "path-not-found", source, plugin, path, component }
• Provides actionable error messages like "Check that the marketplace entry has the correct path"
• Evidence: v2.0.14 function zV6() at line 222943 only logged warnings; v2.0.15 function AD6() pushes structured error objects (lines 223537-543, 223567-573, 223593-599)

What: File scanning now automatically excludes the original working directory when the process has changed directories, preventing unintended file access.

Details:

• Function H7B() at line 275861 checks if current directory differs from startup directory
• If different, adds originalCwd to ignore paths list (lines 275873-276)
• Prevents Claude Code from scanning the launch directory when operating in a different location
• Evidence: v2.0.14 function s3B() at line 275176 had static ignore list; v2.0.15 adds dynamic originalCwd logic

What: The conversation context file cache now tracks Write tool results in addition to Read tool results, improving context awareness.

Details:

• Function HMQ() at line 460001 now accepts file paths from both Read and Write tools
• Caches file content from Write operations with timestamps
• Helps maintain accurate file state tracking across tool uses
• Path normalization now works for both read and write operations
• Evidence: v2.0.14 function yLQ() at line 458431 only tracked Read tool (check at line 458451); v2.0.15 tracks both Read and Write tools (Write check added at lines 460014-460020)

What: Git operations during marketplace installation/update now show clearer progress messages.

Details:

• "Updating existing marketplace cache…" instead of "Running: git pull"
• "Update failed, cleaning up and re-cloning…" for clearer failure messaging
• "Cloning repository: [url]" instead of "Running: git clone [url]"
• "Clone complete, validating marketplace…" confirms successful completion
• Evidence: Function Df1() at line 222621 uses QT() helper with improved messages (lines 222636, 222650, 222651)

What: The interactive select component now supports inline text input fields as options, enabling mixed multiple-choice and text input in a single selection UI.

Details:

• New "input" option type alongside existing "text" options
• Options can have type: "input" with placeholder and initialValue properties
• New compact-vertical layout mode for better description display
• Component F01 at line 145146 renders input fields with focus state management
• Multi-select component _GB at line 282823 supports input options with checkboxes
• Evidence: Function TA() at line 145236 now handles type: "input" options (checks at lines 145558, 145643, 145723)

What: Fixed quote handling in command security checks to properly detect obfuscated flags with escaped characters.

Details:

• Function Ck6() at line 274379 now tracks quote state and escape sequences
• Added escape sequence tracking with Y flag (lines 274396-274402)
• Properly handles single quotes (') and double quotes (") separately (lines 274403-274410)
• Checks fullyUnquotedContent instead of originalCommand for better accuracy (line 274433)
• Prevents false positives from legitimate quoted strings in command arguments
• Evidence: v2.0.14 function y_6() at line 273725 had simpler quote detection; v2.0.15 adds stateful quote and escape tracking (lines 274389-274411)

What: Hook execution functions now use clearer parameter naming with object destructuring for better code maintainability.

Details:

• Function tX9() at line 73192 uses named parameters: { toolUseID, hook, hookInput, signal }
• Function r40() at line 72973 uses named parameters: { hookInput, matchQuery, signal, timeoutMs }
• Replaces positional parameters with descriptive object properties
• Evidence: v2.0.14 used positional parameters HX9(A, B, Q, Z) at line 73080 and S40(A, B, Q, Z) at line 72895

What: Tool permission confirmation component optimized with React hooks for better performance.

Details:

• Function Uu() at line 387386 now uses useMemo for telemetry data (line 387407)
• Uses custom hook JE() for permission tracking
• Replaces direct function call Aq() with memoized approach
• Evidence: v2.0.14 function Yu() at line 386492 called Aq() directly; v2.0.15 memoizes with useMemo