65aee15f89102180ee10261f0da584856bac6ee4
braney
  Fri Jul 1 14:18:10 2016 -0700
add bigChain to the list of bigBed formats in trackDb.h

diff --git src/hg/inc/trackDb.h src/hg/inc/trackDb.h
index ec84df8..e39c182 100644
--- src/hg/inc/trackDb.h
+++ src/hg/inc/trackDb.h
@@ -595,31 +595,31 @@
 // Sets the subtrack membership for later retrieval.
 
 char *tdbBigFileName(struct sqlConnection *conn, struct trackDb *tdb);
 // Return file name associated with bigWig.  Do a freeMem on returned string when done.
 
 boolean rTdbTreeCanPack(struct trackDb *tdb);
 // Trees can pack as all or none, since they can share vis.
 
 void tdbSetCartVisibility(struct trackDb *tdb, struct cart *cart, char *vis);
 // Set visibility in the cart. Handles all the complications necessary for subtracks.
 
 // More INLINES which depend on what the definition of "is" is
 INLINE boolean tdbIsBigBed(struct trackDb *tdb)
 // Local test to see if something is big bed.  Handles hub tracks unlike hIsBigBed.
 {
-return startsWithWord("bigBed", tdb->type) || startsWithWord("bigGenePred", tdb->type) || startsWithWord("bigMaf", tdb->type) || startsWithWord("bigPsl", tdb->type);
+return startsWithWord("bigBed", tdb->type) || startsWithWord("bigGenePred", tdb->type) || startsWithWord("bigMaf", tdb->type) || startsWithWord("bigPsl", tdb->type) || startsWithWord("bigChain", tdb->type);
 }
 
 INLINE boolean tdbIsBigWig(struct trackDb *tdb)
 // Local test to see if something is big bed.  Handles hub tracks unlike hIsBigBed.
 {
 return startsWithWord("bigWig", tdb->type);
 }
 
 INLINE boolean tdbIsLongTabix(struct trackDb *tdb)
 // Return TRUE if tdb corresponds to a long tabix file.
 {
 return startsWithWord("longTabix", tdb->type);
 }
 
 INLINE boolean tdbIsBam(struct trackDb *tdb)