[TASK] Deprecate unknown VH namespace syntax #1179
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lolli42
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Aug 12, 2025
There are two main syntax variants to import a ViewHelper namespace
in a template:
```
{namespace my=Vendor\MyPackage\ViewHelpers}
<html xmlns:my="http://typo3.org/ns/Vendor/MyPackage/ViewHelpers" data-namespace-typo3-fluid="true">
```
The second variant is mainly used/preferred because it provides
autocompletion for ViewHelpers in supporting IDEs. However, a
third variant is implemented, which mixes the two variants:
```
<html xmlns:my="Vendor\MyPackage\ViewHelpers" data-namespace-typo3-fluid="true">
```
This doesn't make much sense because it neither provides
autocompletion nor is it valid XML syntax because it's
not a valid URL.
This patch deprecates that syntax variant, which will no longer
work in Fluid v5.
Resolves: #1019
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Aug 12, 2025
There are two main syntax variants to import a ViewHelper namespace
in a template:
```
{namespace my=Vendor\MyPackage\ViewHelpers}
<html xmlns:my="http://typo3.org/ns/Vendor/MyPackage/ViewHelpers" data-namespace-typo3-fluid="true">
```
The second variant is mainly used/preferred because it provides
autocompletion for ViewHelpers in supporting IDEs. However, a
third variant is implemented, which mixes the two variants:
```
<html xmlns:my="Vendor\MyPackage\ViewHelpers" data-namespace-typo3-fluid="true">
```
This doesn't make much sense because it neither provides
autocompletion nor is it valid XML syntax because it's
not a valid URL.
This patch deprecates that syntax variant, which will no longer
work in Fluid v5.
Resolves: #1019
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There are two main syntax variants to import a ViewHelper namespace
in a template:
The second variant is mainly used/preferred because it provides
autocompletion for ViewHelpers in supporting IDEs. However, a
third variant is implemented, which mixes the two variants:
This doesn't make much sense because it neither provides
autocompletion nor is it valid XML syntax because it's
not a valid URL.
This patch deprecates that syntax variant, which will no longer
work in Fluid v5.
Resolves: #1019