feat(plugin): Add windows-null-redirect-fix plugin to prevent null file creation#23348
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…e creation This plugin addresses issue anthropics#23343 where Windows reserved filename 'nul' is created instead of properly redirecting to the null device. On Windows with Git Bash/MSYS, using 'nul' for output redirection creates a literal file named 'nul' instead of discarding output. This is problematic because: - NUL is a reserved device name on Windows - Files named 'nul' can be difficult to delete via Windows Explorer - May cause issues with backup software, antivirus scanners, and sync tools The plugin adds a PreToolUse hook that: - Detects bash commands with 'nul' redirections (> nul, 2> nul, etc.) - Blocks execution and suggests using '/dev/null' instead - Only runs on Windows (no-op on other platforms) Fixes anthropics#23343 Co-Authored-By: Warp <agent@warp.dev>
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mrmrcode
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Feb 10, 2026
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@claude Please only send me PR with 200+ files changed
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This was referenced Mar 14, 2026
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Summary
This PR adds a new plugin that addresses issue #23343 - Windows reserved filename 'nul' being created instead of properly redirecting to the null device.
Problem
On Windows with Git Bash/MSYS, using
nulfor output redirection creates a literal file namednulinstead of discarding output. This is problematic because:NULis a reserved device name on Windowsnulcan be difficult to delete via Windows ExplorerSolution
Added a
PreToolUsehook plugin that:nulredirections (e.g.,> nul,2> nul,&> nul)/dev/nullinsteadFiles Added
plugins/windows-null-redirect-fix/.claude-plugin/plugin.jsonplugins/windows-null-redirect-fix/hooks/hooks.jsonplugins/windows-null-redirect-fix/hooks/windows_null_redirect_hook.pyplugins/windows-null-redirect-fix/README.mdFixes #23343