CssSelect doesn't work as expected

[a-a-k]

Please, direct me to a relevant closed/opened issue if that already exists.
Here a part of my HTML (if need - you can explore it completely here)

I've checked this examples before but when I'm trying to parse article elements by

doc.CssSelect "article[itemscope='']" 

or

doc.CssSelect "div.items.catalog-items > article"

or

doc.CssSelect "div.list.catalog-list article"

all these give me no results, can't figure out why. Also, even this construction gives me nothing

doc.CssSelect "div.list.catalog-list"

But this

doc.CssSelect "div.list" 

returns an element (howewer, also not that I searched).

Any supposes?

UPD

Is that related - #1130?

[ovatsus]

/cc @rflechner and @colinbull

[colinbull]

Looking at both issues it looks indeed like they are related. I myself am not that familiar with the CSS Selector code but I can give this ago at sorting this out. I need to start contributing to OSS again I have been rubbish for the last 2 years ;)

@ovatsus is everything still the same wrt build / dependencies now we are .net core compatible?

[ovatsus]

Either building in VS2017 or "build All" from the command line should be the same as before

[ssimontis]

@ovatsus Hey I was using FSharp.Data yesterday to play around with CSS and I am going to try and dig into some of these errors this weekend. I've never contributed to an open-source project before, but I'm looking forward to it!

[github-actions]

🤖 This is an automated response from Repo Assist.

Good news: multi-class selectors appear to work correctly in the current version. I just tested with:

let html = HtmlDocument.Parse """(div class="items catalog-items")Found it(/div)..."""
html.CssSelect "div.items.catalog-items"  // returns 1 result ✅
html.CssSelect ".items.catalog-items"     // returns 1 result ✅

The issue in the original report was from 2018 and was about Amazon's page returning non-deterministic ul counts. Amazon's pages use extensive JavaScript for dynamic content insertion, so the count difference is most likely due to the HTML fetched by a plain HTTP request being the server-rendered skeleton before JavaScript runs — not a bug in FSharp.Data's CSS selector engine.

If you can construct a static HTML repro case where multi-class selectors return wrong results, please share it and we can investigate further. Otherwise, this appears to be working as intended in the current version.

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[dsyme]

Correct reply