test: catch each form of a maintainer count

The count pattern now finds numerals and plural forms, and a test
checks the pattern against examples. The maintenance page test now
checks the name and profile link of the lead maintainer. The changelog
no longer says that the versioning page links to the maintenance page.

Author: cardmagic

CHANGELOG.md

@@ -4,9 +4,9 @@
 
 - Add `docs/maintenance.md`. It tells you who maintains the gem, how CI checks
   each change, how a release is published, what you keep if maintenance
-  stops, and how to become a maintainer. The README, `docs/versioning.md`, and
-  the comparison pages now link to this page and no longer state a count of
-  maintainers. A new test fails when a page states one.
+  stops, and how to become a maintainer. The README and the comparison pages
+  now link to this page. They and `docs/versioning.md` no longer state a count
+  of maintainers. A new test fails when a page states one.
 
 ## 1.0.2 - 2026-10-15
 

test/unit/maintenance_documents_test.rb

@@ -4,26 +4,35 @@
 
 class MaintenanceDocumentsTest < ActiveSupport::TestCase
   ROOT = File.expand_path("../..", __dir__)
-  MAINTAINER_COUNT = /\b(?:one|only|sole|single)\s+maintainer\b/i
+  MAINTAINER_COUNT = /\b(?:\d+|one|two|three|four|five|six|seven|eight|nine|ten|only|sole|single)\s+maintainers?\b/i
 
   def guide(path)
     File.read(File.join(ROOT, path))
   end
 
-  def documentation_paths
-    [ "README.md", "CONTRIBUTING.md", *Dir.glob("docs/**/*.md", base: ROOT).sort ]
-  end
-
   test "the README links to the maintenance page" do
     assert_includes guide("README.md"), "(docs/maintenance.md)"
   end
 
   test "the maintenance page names the lead maintainer" do
-    assert_match(/is the lead\s+maintainer/, guide("docs/maintenance.md"))
+    assert_match(
+      %r{Lucas Carlson \(\[@cardmagic\]\(https://github\.com/cardmagic\)\) is the lead\s+maintainer},
+      guide("docs/maintenance.md")
+    )
+  end
+
+  test "the count pattern finds a count of maintainers in each form" do
+    [ "One maintainer.", "1 maintainer", "two maintainers", "the only\nmaintainer" ].each do |text|
+      assert_match MAINTAINER_COUNT, text
+    end
+    [ "the lead maintainer", "wants more maintainers", "become a maintainer" ].each do |text|
+      refute_match MAINTAINER_COUNT, text
+    end
   end
 
   test "no page states a count of maintainers" do
-    pages = documentation_paths.select { |path| guide(path).match?(MAINTAINER_COUNT) }
+    paths = [ "README.md", "CONTRIBUTING.md", *Dir.glob("docs/**/*.md", base: ROOT).sort ]
+    pages = paths.select { |path| guide(path).match?(MAINTAINER_COUNT) }
 
     assert_empty pages
   end