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Document dotenv 16 quoting rule for .env values

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A production password containing '#' was truncated after the dotenv 8 -> 16
bump (unquoted '#' now starts a comment), causing MariaDB access denied.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Patrick Müller
2026-09-05 16:11:50 +02:00
parent 3ea9e630ed
commit bf7f45acce
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CLAUDE.md
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@@ -47,6 +47,11 @@ Express.js REST API in TypeScript with a service-oriented layering. Domains: `Ca
## Environment
dotenv 16 parses `.env` stricter than the old dotenv 8: an unquoted `#` starts a comment and
backslash escapes inside double quotes are expanded. Wrap any value containing `#`, `"`, `\` or
surrounding spaces in single quotes (`DB_PASSWORD='abc#def'`), which are taken literally.
A truncated password shows up as MariaDB "Access denied ... (using password: YES)".
Copy `.env.example` (or create `.env`) with:
```
PORT=