a614ebbbf474effd0ea4cfda62b62a56e8dcd97c
max
  Thu Aug 15 10:49:34 2013 -0700
suppressing strand if strand field is empty in bed tracks, see #10935
diff --git src/hg/hgc/hgc.c src/hg/hgc/hgc.c
index 7e2ca0f..7b6289d 100644
--- src/hg/hgc/hgc.c
+++ src/hg/hgc/hgc.c
@@ -672,31 +672,31 @@
 }
 
 
 void printPosOnChrom(char *chrom, int start, int end, char *strand,
 		     boolean featDna, char *item)
 /* Print position lines referenced to chromosome. Strand argument may be NULL */
 {
 
 printf("<B>Position:</B> "
        "<A HREF=\"%s&db=%s&position=%s%%3A%d-%d\">",
        hgTracksPathAndSettings(), database, chrom, start+1, end);
 printf("%s:%d-%d</A><BR>\n", chrom, start+1, end);
 /* printBand(chrom, (start + end)/2, 0, FALSE); */
 printBand(chrom, start, end, FALSE);
 printf("<B>Genomic Size:</B> %d<BR>\n", end - start);
-if (strand != NULL && differentString(strand,"."))
+if (strand != NULL && differentString(strand,".") && isNotEmpty(strand))
     printf("<B>Strand:</B> %s<BR>\n", strand);
 else
     strand = "?";
 if (featDna && end > start)
     {
     char *tbl = cgiUsualString("table", cgiString("g"));
     strand = cgiEncode(strand);
     printf("<A HREF=\"%s&o=%d&g=getDna&i=%s&c=%s&l=%d&r=%d&strand=%s&table=%s\">"
 	   "View DNA for this feature</A>  (%s/%s)<BR>\n",  hgcPathAndSettings(),
 	   start, (item != NULL ? cgiEncode(item) : ""),
 	   chrom, start, end, strand, tbl, trackHubSkipHubName(database), trackHubSkipHubName(hGenome(database)));
     }
 }
 
 void printPosOnScaffold(char *chrom, int start, int end, char *strand)