Rendering of ${['']} in an attribute inconsistent with the spec

toniedzwiedz commented 7 years ago

According to the specification, attributes containing an array with just an empty string should be rendered with an empty value:

<!--/* But an array containing just an empty string doesn't get removed: */-->
<div title="${['']}"></div>
<!--/* outputs: */-->
<div title=""></div>

However, when I try the same code on my AEM instance, I get the following output:

<div></div>

I'm using AEM 6.2 and the following bundles:

Apache Sling Scripting Sightly Engineorg.apache.sling.scripting.sightly 1.0.18
Apache Sling Scripting Sightly JavaScript Use Providerorg.apache.sling.scripting.sightly.js.provider 1.0.10 sling
Apache Sling Scripting Sightly Models Use Providerorg.apache.sling.scripting.sightly.models.provider 1.0.0
Adobe Experience Manager Sightly Extensioncom.adobe.cq.sightly.cq-wcm-sightly-extension 1.3.8
Adobe Granite Sightly Template Engine (compatibility)io.sightly.bundle 1.1.72

Is this an error in the specification or is this a bug in my specific version and one of the bundles requires an update?

vladbailescu commented 7 years ago

This seems to be an implementation bug. I will update the HTL TCK with a relevant test, file an issue in SLING and submit a patch.

toniedzwiedz commented 7 years ago

Thanks @vladbailescu

mehtarachna commented 4 years ago

Hi, is this issue resolved? seems to be not working for me on 6.4.5

raducotescu commented 4 years ago

@mehtarachna, if you have any implementation issues please use the official support channels for reporting them. For AEM, the instructions are available at https://helpx.adobe.com/experience-manager/kb/accessing-aem-support-portal.html.

adobe / htl-spec