5d4616290454b29ef09230e5332b086ba5dea764
kent
  Fri May 26 14:38:30 2017 -0700
Adding a little verbose diagnostic message.

diff --git src/tabFile/tabRepeatedFieldsToArrayField/tabRepeatedFieldsToArrayField.c src/tabFile/tabRepeatedFieldsToArrayField/tabRepeatedFieldsToArrayField.c
index 7db4209..c30b494 100644
--- src/tabFile/tabRepeatedFieldsToArrayField/tabRepeatedFieldsToArrayField.c
+++ src/tabFile/tabRepeatedFieldsToArrayField/tabRepeatedFieldsToArrayField.c
@@ -58,50 +58,54 @@
 while ((c = *val++) != 0)
     {
     if (c == '"')
 	fputc('"', f);
     fputc(c, f);
     }
 fputc('"', f);
 }
 
 void tabRepeatedFieldsToArrayField(char *inFile, char *outFile)
 /* tabRepeatedFieldsToArrayField - Convert columns that are repeated in a tab-separated file to a 
  * single column with comma separated values. */
 {
 /* Read in tab-sep file */
 struct fieldedTable *table = fieldedTableFromTabFile(inFile, inFile, NULL, 0);
+int collapsedFields = 0;
 
 /* Build up list and hash of fieldInfo from table's field list */
 struct hash *hash = hashNew(0);
 struct fieldInfo *list = NULL, *field;
 int i;
 for (i=0; i<table->fieldCount; ++i)
     {
     char *name = table->fields[i];
     field = hashFindVal(hash, name);
     if (field == NULL)
         {
 	AllocVar(field);
 	field->name = name;
 	slAddHead(&list, field);
 	hashAdd(hash, name, field);
 	}
+    else
+        ++collapsedFields;
     struct slInt *si = slIntNew(i);
     slAddTail(&field->offsetList, si);
     }
 slReverse(&list);
+verbose(1, "Collapsed %d fields\n", collapsedFields);
 
 
 /* Open output file and write out header row with optional leading # */
 FILE *f = mustOpen(outFile, "w");
 if (table->startsSharp)
     fputc('#', f);
 char *sep = "";
 for (field = list; field != NULL; field = field->next)
     {
     fprintf(f, "%s%s", sep, field->name);
     sep = "\t";
     }
 fputc('\n', f);
 
 /* Write out main rows */