[3.9] Cannot assign the output of a custom tag to a variable using set

[MauricioFauth]

After Twig 3.9.0, it's not possible to capture the output of a custom tag (that uses echo) and assign it to a variable using set.

A {% set variable %}{% trans 'value' %}{% endset %} B {{ variable }} C

With Twig 3.9.0+, that will print:

A value B  C

Instead of the expected:

A  B value C

It works as expected if the custom tag output is not the only content, for example:

A {% set variable %}some {% trans 'value' %}{% endset %} B {{ variable }} C

Outputs:

A  B some value C

[fabpot]

If the trans tag comes from Symfony, I've tried A {% set variable %}{% trans %}value{% endtrans %}{% endset %} B {{ variable }} C and it works as expected. Can you confirm that you're not using the trans tag from Symfony? If yes, then, I would need something I can reproduce.

[MauricioFauth]

It was from phpmyadmin/twig-i18n-extension that is a fork of Twig's I18nExtension.

I "fixed" this in the phpmyadmin/twig-i18n-extension 4.1.1 by adding support for yield if Twig 3.9 is detected, but phpmyadmin/twig-i18n-extension 4.1.0 doesn't work with Twig 3.9 because of that.

• Add support for Twig 3.9 phpmyadmin/twig-i18n-extension#12