Describe the bug

Static assets referenced by encoded URLs are not served.

Reproduction

1. Create a file /public/Hello World.css on your disk
2. Run Vite
3. Try to download /Hello%20World.css or /Hello+World.css
4. You get a 404 response

Source of the issue is related to sirv, see
lukeed/sirv#82

System Info

• vite version: 2.0.0-beta.12
• Operating System: Win 10
• Node version: 15.5.1
• Package manager (npm/yarn/pnpm) and version: npm 7.3.0