Redmine

This originates from #28119#note-2.

1. We might want to add a simple test (like ApplicationHelperTest#test_footnotes, but than in source:trunk/test/unit/lib/redmine/wiki_formatting/markdown_formatter_test.rb) for markdown footnotes as enabled per #16072.
2. And while looking at the above, the question of 'how many other textile syntax tests are there remaining, lurking outside of source:/trunk/test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb and what do we want to do with them?' came up...
   • The answer to the first part would be 'several' (among them e.g. ApplicationHelperTest#test_footnotes). My answer to the second part of the question would be 'move them to the dedicated TextileFormatterTest class'.

• 0001-Add-footnotes-test-for-markdown-formatter-16072.patch
  • This patch adds a footnotes test for the markdown formatter (MarkdownFormatterTest#test_footnotes).
• 0002-Move-textile-footnotes-test-to-TextileFormatterTest.patch
  • This patch moves ApplicationHelperTest#test_footnotes to become TextileFormatterTest#test_footnotes.

In case there is consensus on my answer to the question raised under point 2, I'll open a dedicated container issue for it.

Note: I won't target this issue to any version, as I don't think this is of any use for the changelogs.