dff3f2a22bb375a6ec0eb38ab29b8bdc1e0de9d2
braney
  Thu May 9 11:47:45 2019 -0700
fix filters on bigBeds with over 32 fields.  Fix justification of dense
left label on gdcCancer track

diff --git src/hg/hgTracks/bedTrack.c src/hg/hgTracks/bedTrack.c
index 344ec58..68ef68f 100644
--- src/hg/hgTracks/bedTrack.c
+++ src/hg/hgTracks/bedTrack.c
@@ -72,47 +72,48 @@
     }
 
 /* Get list of items */
 if (startsWith("bedTabix", tg->tdb->type ) || startsWith("longTabix", tg->tdb->type ))
     {
     struct hash *settings = tg->tdb->settingsHash;
     char *bigDataUrl = hashFindVal(settings, "bigDataUrl");
     struct bedTabixFile *btf = bedTabixFileMayOpen(bigDataUrl, NULL, 0, 0);
     list = bedTabixReadBeds(btf, chromName, winStart, winEnd, loader);
     bedTabixFileClose(&btf);
     }
 else if (tg->isBigBed)
     { // avoid opening an unneeded db connection for bigBed; required not to use mysql for parallel fetch tracks
     struct lm *lm = lmInit(0);
     struct bigBedInterval *bb, *bbList = bigBedSelectRange(tg, chromName, winStart, winEnd, lm);
-    char *bedRow[32];
-    char startBuf[16], endBuf[16];
     struct bbiFile *bbi = fetchBbiForTrack(tg);
+    char *bedRow[bbi->fieldCount];
+    char startBuf[16], endBuf[16];
     struct bigBedFilter *filters = bigBedBuildFilters(cart, bbi, tg->tdb);
 
      if (tg->itemName == bedName && !trackDbSettingClosestToHomeOn(tg->tdb, "linkIdInName"))
         tg->itemName = bigBedItemName;
 
     bigBedLabelCalculateFields(cart, tg->tdb, bbi,  &tg->labelColumns);
     for (bb = bbList; bb != NULL; bb = bb->next)
         {
         bigBedIntervalToRow(bb, chromName, startBuf, endBuf, bedRow, ArraySize(bedRow));
         if (!bigBedFilterInterval(bedRow, filters))
             continue;
         bed = loader(bedRow);
         // FIXME BRANEY: either disable for all tracks with NUM_FIELDS > label field or better,
         // fix how label is stored so it doesn't trash custom bed field
+        // BRANEY says: the loader should be returning bed structures which include the label field.
         if (differentString(tg->tdb->type, "bigInteract"))
             bed->label = bigBedMakeLabel(tg->tdb, tg->labelColumns, bb, chromName);
 
         slAddHead(&list, bed);
         }
     lmCleanup(&lm);
     }
 else
     {
     char *table = tg->table;
     struct customTrack *ct = tg->customPt;
     struct sqlConnection *conn = NULL;
     if (ct == NULL)
         conn = hAllocConnTrack(database, tg->tdb);
     else