Unable to Correctly Parse `:has()` Pseudo-Classes with More than a Singular Child

[Alexhuszagh]

Issue

When attempting to parse a CSS selector using a :has pseudo-class, it works but only if a singular tag name is provided.

For example, if selecting for a child with attributes:

>>> from cssselect import GenericTranslator
>>> GenericTranslator().css_to_xpath('h4.my-class:has(a[href^="/rel"])')
*** cssselect.parser.SelectorSyntaxError: Expected an argument, got <DELIM '[' at 17>

Likewise, if attempting to select for a tag with a descendant tag, we get:

>>> GenericTranslator().css_to_xpath('h4.my-class:has(div a')
*** cssselect.parser.SelectorSyntaxError: Expected an argument, got <IDENT 'a' at 20>

However, selecting for a singular tag name works:

>>> GenericTranslator().css_to_xpath('h4.my-class:has(a)')
"descendant-or-self::h4[(@class and contains(concat(' ', normalize-space(@class), ' '), ' my-class ')) and (descendant::a)]"

Diagnosing it further, this also does not affect combinators inside the :has(...):

>>> GenericTranslator().css_to_xpath('h4.my-class:has(> a)')
"descendant-or-self::h4[(@class and contains(concat(' ', normalize-space(@class), ' '), ' my-class ')) and (./a)]"

Information

Running cssselect version 1.5.0.

[Alexhuszagh]

Incorrectly thought this was a duplicate of two other issues, but I believe they are separate.

[wRAR]

Do you think this is missing from the documented :has() limitations in https://cssselect.readthedocs.io/en/latest/#supported-selectors?

[Alexhuszagh]

Do you think this is missing from the documented :has() limitations in https://cssselect.readthedocs.io/en/latest/#supported-selectors?

From the docs:

followed by one compound selector built only from type, class and universal selectors

On close look, it is documented and this covers everything but an additional unsupported kind might be worthwhile.

I saw the limitations on :has(a, b) (from here and the issue tracker), however, maybe include one more example here (adding in the attribute selector):

followed by one compound selector built only from type, class and universal selectors (e.g. :has(> a.important)). Anything else is unsupported, e.g. an ID (:has(#id)), attribute (:has(a[href])), or a selector list (:has(a, b))

Closing this and thanks for the response.

[AdrianAtZyte]

#179