Problem/Motivation
Some twig functions are not part of Twig core, but come with twig/intl-extra, like:
To be able to use them, I created https://www.drupal.org/project/twig_intl. This simply adds the composer dependency and adds the extension.
This works great, but then I ran into this issue: #3419285: Twig\Error\RuntimeError: The date format "html_date" does not exist and looking for the reason, I found a major issue in Drupal core:
new TwigFilter('format_date', [$this->dateFormatter, 'format']),
in https://git.drupalcode.org/project/drupal/-/blob/11.x/core/lib/Drupal/Co...
has a naming conflict with the Twig function: https://twig.symfony.com/doc/3.x/filters/format_date.html
Both are using the same name for the |format_date() filter.
Drupal should not overwrite Twigs naming, but (I guess for historic reasons) does.
It's not very widely used in core (https://git.drupalcode.org/search?group_id=2&nav_source=navbar&project_i...), but might be used in contrib!
I have no idea how to solve this cleanly, but Drupal overwriting the Twig method is unexpected and should not be done.
I couldn't find other naming conflicts.
This makes it impossible to use Twig IntlExtension in general, as it produces these conflicts everywhere |format_date() filter is used.
Steps to reproduce
Register Twig IntlExtension as documented on https://twig.symfony.com/doc/3.x/filters/format_date.html or simply use the https://www.drupal.org/project/twig_intl module for that
Visit a page where a template with |format_date() filter is used, for example /admin/reports/translations
Proposed resolution
Resolve the naming conflict by renaming the Drupal core twig filter "format_date" (which is a breaking change) so that the Twig method is not used twice or being overwritten.
Any other ideas?
Merge request link
Remaining tasks
Discuss
Resolve
Test
Release
User interface changes
None