Index: /trunk/src/org/openstreetmap/josm/data/validation/tests/TagChecker.java
===================================================================
--- /trunk/src/org/openstreetmap/josm/data/validation/tests/TagChecker.java	(revision 17009)
+++ /trunk/src/org/openstreetmap/josm/data/validation/tests/TagChecker.java	(revision 17010)
@@ -480,4 +480,5 @@
         return c == 0x0259 || c == 0x018F // U+0259 is paired with the capital letter U+018F in Azeri, see #18740
             || c == 0x0254 || c == 0x0186 // U+0254 is paired with the capital letter U+0186 in several African languages, see #18740
+            || c == 0x0257 || c == 0x018A // "ɗ/Ɗ" (U+0257/U+018A), see #19760
             || c == 0x025B || c == 0x0190 // U+025B is paired with the capital letter U+0190 in several African languages, see #18740
             || c == 0x0263 || c == 0x0194 // "ɣ/Ɣ" (U+0263/U+0194), see #18740