The src/options.c change was unneeded

src/options.c

@@ -6491,9 +6491,6 @@ escapes(const char *cp, /* might be 'tp', updating in place */
             case 'r':
                 cval = '\r';
                 break;
-            case ',':
-                cval = ',';
-                break;
             default:
                 cval = *cp;
             }