file_canonical_name(g.argv[i], &fullName);
    zName = blob_str(&fullName);
    isDir = file_isdir(zName);
    if( isDir==1 ){
      vfile_scan(&fullName, nRoot-1, includeDotFiles, pIgnore);
    }else if( isDir==0 ){
      fossil_fatal("not found: %s", zName);
    }else if( file_access(zName, R_OK) ){
      fossil_fatal("cannot open %s", zName);
    }else{
      char *zTreeName = &zName[nRoot];
      db_multi_exec(
         "INSERT OR IGNORE INTO sfile(x)"
         "  SELECT %Q WHERE NOT EXISTS(SELECT 1 FROM vfile WHERE pathname=%Q)",
         zTreeName, zTreeName