diff -pruN mutt-1.3.28.orig/doc/manual.sgml.head mutt-1.3.28/doc/manual.sgml.head
--- mutt-1.3.28.orig/doc/manual.sgml.head	Sat Jan 12 12:39:49 2002
+++ mutt-1.3.28/doc/manual.sgml.head	Wed Mar 20 21:33:35 2002
@@ -1719,6 +1719,7 @@ messages:
 ~y EXPR         messages which contain EXPR in the `X-Label' field
 ~z [MIN]-[MAX]  messages with a size in the range MIN to MAX *)
 ~=		duplicated messages (see $duplicate_threads)
+~#		broken threads (see $strict_threads)
 </verb></tscreen>
 
 Where EXPR, USER, ID, and SUBJECT are 
diff -pruN mutt-1.3.28.orig/mutt.h mutt-1.3.28/mutt.h
--- mutt-1.3.28.orig/mutt.h	Thu Feb 28 09:24:13 2002
+++ mutt-1.3.28/mutt.h	Wed Mar 20 21:33:35 2002
@@ -195,6 +195,7 @@ enum
   M_AND,
   M_OR,
   M_TO,
+  M_BROKEN,
   M_CC,
   M_COLLAPSED,
   M_SUBJECT,
diff -pruN mutt-1.3.28.orig/pattern.c mutt-1.3.28/pattern.c
--- mutt-1.3.28.orig/pattern.c	Tue Jan 15 10:03:33 2002
+++ mutt-1.3.28/pattern.c	Wed Mar 20 21:34:43 2002
@@ -91,6 +91,7 @@ Flags[] =
   { 'y', M_XLABEL,		0,		eat_regexp },
   { 'z', M_SIZE,		0,		eat_range },
   { '=', M_DUPLICATED,		0,		NULL },
+  { '#', M_BROKEN,		0,		NULL },
   { 0 }
 };
 
@@ -968,6 +969,8 @@ mutt_pattern_exec (struct pattern_t *pat
   {
     case M_AND:
       return (pat->not ^ (perform_and (pat->child, flags, ctx, h) > 0));
+    case M_BROKEN:
+      return (pat->not ^ (h->thread && h->thread->fake_thread));
     case M_OR:
       return (pat->not ^ (perform_or (pat->child, flags, ctx, h) > 0));
     case M_ALL:
diff -pruN mutt-1.3.28.orig/PATCHES mutt-1.3.28/PATCHES
--- mutt-1.3.28.orig/PATCHES	Mon Nov 26 20:16:52 2001
+++ mutt-1.3.28/PATCHES	Wed Mar 20 21:33:35 2002
@@ -1,0 +1 @@
+patch-1.3.28.cd.pattern_broken.1