5fbeef52986052068fcf6316a433908211fe4f65
braney
  Fri Mar 25 11:27:52 2022 -0700
add a little comment to make it more clear how bbiAliasChromSize works

diff --git src/lib/bbiAlias.c src/lib/bbiAlias.c
index 757c3b4..4cacf75 100644
--- src/lib/bbiAlias.c
+++ src/lib/bbiAlias.c
@@ -68,21 +68,22 @@
     {
     for(; bptIndex; bptIndex = bptIndex->next)
         {
         bb= bigBedNameQuery(bbi, bptIndex->bpt, bptIndex->fieldIx, chrom, lm);
 
         if (bb != NULL)
             break;
         }
     }
 
 char *bedRow[bbi->fieldCount];
 char startBuf[16], endBuf[16];
 if (bb != NULL)
     {
     bigBedIntervalToRow(bb, chrom, startBuf, endBuf, bedRow, ArraySize(bedRow));
+    // sequence size is the end address of the bigBed item
     int ret = atoi(endBuf);
     return ret;
     }
 
 return 0;
 }