Beginning to hand out footnote ids.

org_test_documents/footnote_definitions.org

@@ -0,0 +1,25 @@
+# Test proves that:
+#
+# - Anonymous references with identical content get unique IDs.
+# - Unreferenced footnote definitions are dropped.
+# - Footnote definitions that come before their first reference are dropped.
+
+foo[fn:2:something]
+
+bar[fn::something]
+
+baz[fn::something]
+
+cat[fn::something]
+
+dog[fn:3]
+
+[fn:3] ipsum
+
+[fn:4] lorem
+
+[fn:3] dolar
+
+[fn:5] not referenced
+
+stuff[fn:4] and things