Index: D:/dev/lucene/lucene-trunk/java/org/apache/lucene/analysis/standard/StandardTokenizerImpl.jflex
===================================================================
--- D:/dev/lucene/lucene-trunk/java/org/apache/lucene/analysis/standard/StandardTokenizerImpl.jflex	(revision 598379)
+++ D:/dev/lucene/lucene-trunk/java/org/apache/lucene/analysis/standard/StandardTokenizerImpl.jflex	(working copy)
@@ -72,7 +72,7 @@
 
 // acronyms: U.S.A., I.B.M., etc.
 // use a post-filter to remove dots
-ACRONYM    =  {ALPHA} "." ({ALPHA} ".")+
+ACRONYM    =  {LETTER} "." ({LETTER} ".")+
 
 // company names like AT&T and Excite@Home.
 COMPANY    =  {ALPHA} ("&"|"@") {ALPHA}