To reproduce:

img {
    aspect-ratio: attr(width type(<number>)) / attr(height type(<number>));
}

Current behavior:

An exception: "Could not parse call arguments or missing ')'" is thrown.

Expected behavior:

img {
    aspect-ratio: attr(width type(<number>)) / attr(height type(<number>));
}

should be rendered

Environment information:

• less version: 4.2.2
• nodejs version: 22.17.0
• operating system: macos