ACIP now stacks greedily. TTTTTA is T+T+T+T+TA, even though that stack doesn't exist in TM or TMW. Robert Chilton, in personal correspondence, agreed that this is the way to do things.

ACIP handles the appendages 'AM, 'ANG, 'US, 'UR, 'I, 'O, and 'U correctly.

source/org/thdl/tib/text/ttt/ACIPRules.java

@@ -179,6 +179,11 @@ public class ACIPRules {
         wylieToACIP.put(EWTS, ACIP);
     }
 
+    /** Returns true if and only if s is an ACIP consonant. */
+    static final boolean isACIPConsonant(String s) {
+        return (null != ACIPRules.getWylieForACIPConsonant(s));
+    }
+
     private static HashMap acipConsonant2wylie = null;
     /** Returns the EWTS corresponding to the given ACIP consonant
      *  (without the "A" vowel).  Returns null if there is no such