Re: [css-values-4] String concatenation

If the use case is to construct URLs, then I think it's wrong to frame it as problem of string concatenation. URLs are not just strings: they require proper encoding. String escaping is type- and context-dependent, and authors get it notoriously wrong.


With naive string concatenation a case like this will likely generate an invalid URL:

url("/picture?of=" + attr(title));

And it's not always URL-encoding, it may require punycode:

url("//" + attr(hostname) + "/favicon.ico");

or it may be expected that there is no encoding applied at all:

url("/images/foo.png" + var(--default-query-string));


-- 
regards, Kornel