[css-values] Clarification on Simplification for clamp() with none values #13535
Description
The spec for clamp() details that it functions as min() or max() or calc(), depending on where none is specified, but the section for Simplification does not detail how clamp() should be simplified.
Chromium currently simplifies to min() or max(), but WebKit keeps clamp():
<!DOCTYPE html>
<body>
<pre><script>
for (let v of ["clamp(none, 100px, 50%)", "clamp(none, 100px, 150px)"]) {
document.body.style.width = v;
document.writeln(`${v}: ${document.body.style.width}`);
}
document.body.style.width = "";
</script></pre>It seems clarification is needed here on how to simplify clamp in partial simplification cases. Should we Serialize to min/max when partial simplification occurs? or should we serialize to clamp?