Make +af-dist -- -t AF the default

Author: pd3

plugins/af-dist.c

@@ -64,7 +64,7 @@ const char *usage(void)
         "Plugin options:\n"
         "   -d, --dev-bins <list>       AF deviation bins\n"
         "   -p, --prob-bins <list>      probability distribution bins\n"
-        "   -t, --af-tag <tag>          VCF INFO tag with population AF\n"
+        "   -t, --af-tag <tag>          VCF INFO tag to use [AF]\n"
         "\n"
         "Default binning:\n"
         "   -d: 0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1\n"
@@ -80,6 +80,7 @@ int init(int argc, char **argv, bcf_hdr_t *in, bcf_hdr_t *out)
     char *dev_bins  = "0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1";
     char *prob_bins = "0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1";
     args->hdr = in;
+    args->af_tag = "AF";
     static struct option loptions[] =
     {
         {"dev-bins",1,0,'d'},
@@ -100,7 +101,6 @@ int init(int argc, char **argv, bcf_hdr_t *in, bcf_hdr_t *out)
             default: error("%s", usage()); break;
         }
     }
-    if ( !args->af_tag ) error("Expected the -t option\n");
 
     args->dev_bins = bin_init(dev_bins,0,1);
     int nbins = bin_get_size(args->dev_bins);
@@ -182,6 +182,7 @@ void destroy(void)
     free(args->prob_dist);
     free(args->gt);
     free(args->af);
+    free(args);
 }