I’m using the Discourse Affiliate plugin to add some params to URL. When the URL is used in plain text or in a link, everything is ok. But when it’s transformed in onebox, the & become & [imagem] Do you know why?

So the URL will be valid? List of Validator errors and their explanation - Error Explanations for The W3C... Below are all the validator's error messages for which we have an "explanation". | W3C's easy-to-use markup validation service, based on SGML and XML parsers. …

Whatever, it’s more readable if & are used instead of & I think… Is it a Onebox bug ?

To me it isn’t a bug at all. The URL is being shown in the correct format.

When I click on it it’s still https://www.captaincontrat.com/articles-financement-societe/etapes-convention-actionnaires?utm_source=pragmatic&utm_medium=referral&utm_content=link in the browser (exemple here

That URL works for me. https://www.captaincontrat.com/articles-financement-societe/etapes-convention-actionnaires?utm_source=pragmatic&utm_medium=referral&utm_content=link The example “here” link however opens the Discourse app. I have a feeling this topic is more about the app than onebo…

We can see &amp; instead of & in the URL now… [imagem]

Yes, it can be confusing. Maybe you’ve had coding experience where backslash escapes needed to be backslash escaped themselves? This is similar. Because the ampersand that signals the beginning of an entity is an entity itself, it “doubles up”

Maybe you should URL encode the ampersands in a URL context? Percent-encoding Percent-encoding, also known as URL encoding, is a method to encode arbitrary data in a uniform resource identifier (URI) using only the US-ASCII characters legal within a URI. Percent-encoding is used to ensur…

I think we actually fixed this @techAPJ ?

Yes, this issue was fixed back in December 2017 via this commit … but we now have a much better and stable fix in place: https://github.com/discourse/onebox/commit/7a1885c48800693d9d4abfa9c58d6d25fd19ca65

In onebox, `&` become `&`

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CamilleRoux (Camille Roux) Março 15, 2017, 2:13pm 7

We can see &amp; instead of & in the URL now…

Tópico		Respostas	Visualizações
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Discourse escaping & in Onebox Bug onebox	3	210	16 de Janeiro de 2026

In onebox, `&` become `&amp;`

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In onebox, `&` become `&`