Allow consecutive footnote references inTextile (#39884).

Patch by @hjust.

git-svn-id: https://svn.redmine.org/redmine/trunk@22546 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/wiki_formatting/textile/redcloth3.rb

@@ -1042,7 +1042,7 @@ class RedCloth3 < String
     end
 
     def footnote_ref( text )
-        text.gsub!(/\b\[([0-9]+?)\](\s)?/,
+        text.gsub!(/(?<=[\p{Word}\]])\[([0-9]+?)\](\s)?/,
                    '<sup><a href="#fn\1">\1</a></sup>\2')
     end
 

test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb

@@ -770,6 +770,23 @@ class Redmine::WikiFormatting::TextileFormatterTest < ActionView::TestCase
       }, false)
   end
 
+  def test_should_allow_multiple_footnotes
+    text = <<~STR
+      Some demo[1][2] And a sentence.[1]
+
+      fn1. One
+
+      fn2. Two
+    STR
+
+    expected = <<~EXPECTED
+      <p>Some demo<sup><a href="#fn1">1</a></sup><sup><a href="#fn2">2</a></sup> And a sentence.[1]</p>
+      <p id="fn1" class="footnote"><sup>1</sup> One</p>
+      <p id="fn2" class="footnote"><sup>2</sup> Two</p>
+    EXPECTED
+    assert_equal expected.gsub(%r{[\r\n\t]}, ''), to_html(text).gsub(%r{[\r\n\t]}, '')
+  end
+
   private
 
   def assert_html_output(to_test, expect_paragraph = true)