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feat(hooks): block backslashed Windows-path redirects in bash

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Adds a PreToolUse(Bash) hook (block-backslash-winpath.sh) that rejects commands
redirecting/writing to a backslashed Windows drive path (e.g. > D:\claudetools\
.claude\current-mode). On Git Bash those strip the backslashes and PUA-substitute
':' (U+F03A), creating garbled junk files that have repeatedly polluted the repo.
The hook quote-strips the command first, so the pattern appearing inside strings
or commit messages does not false-trigger; Windows-tool args (icacls, pwsh -File)
and forward-slash/relative paths pass. Wired into settings.json so every machine
picks it up on /sync. Pairs with the sync.sh staging guard.

Also: CLAUDE.md note on the Windows mode-write path; record jq install on GURU-KALI.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Mike-Swanson
2026-05-24 10:38:14 -07:00
parent a3c7064606
commit 6d065cf3ee
4 changed files with 53 additions and 1 deletions
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.claude/CLAUDE.md
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@@ -67,6 +67,8 @@ echo dev > .claude/current-mode # substitute the actual mode name
```
This file is gitignored (machine-local). The `UserPromptSubmit` hook reads it to gate the lock check on dev mode.
**Windows/Git Bash:** always use the relative path above (or forward slashes — `/d/claudetools/.claude/current-mode`). NEVER a backslashed Windows path like `D:\claudetools\.claude\current-mode`: Git Bash strips the backslashes and substitutes the illegal `:` with a Unicode PUA char, creating a garbled junk file instead of writing the path. A `PreToolUse(Bash)` hook (`.claude/hooks/block-backslash-winpath.sh`) blocks such redirects; `sync.sh` also strips any that slip through before staging.
**Auto-initialization:** If `.claude/current-mode` is missing (e.g., fresh clone), the UserPromptSubmit hook automatically creates it with "general" as the default mode. No manual setup required.
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