#define BRL_BOTH             0x003 /* Show both open and closed branches */
#define BRL_OPEN_CLOSED_MASK 0x003
#define BRL_ORDERBY_MTIME    0x004 /* Sort by MTIME. (otherwise sort by name)*/
#define BRL_REVERSE          0x008 /* Reverse the sort order */
#define BRL_PRIVATE          0x010 /* Show only private branches */
#define BRL_MERGED           0x020 /* Show only merged branches */
#define BRL_UNMERGED         0x040 /* Show only unmerged branches */
#define BRL_LIST_USERS       0x080 /* Populate list of users participating */

#endif /* INTERFACE */

/*
** Prepare a query that will list branches.
**
** If the BRL_ORDERBY_MTIME flag is set and nLimitMRU ("Limit Most Recently Used

  blob_init(&sql, 0, 0);
  brlist_create_temp_table();
  /* Ignore nLimitMRU if no chronological sort requested. */
  if( (brFlags & BRL_ORDERBY_MTIME)==0 ) nLimitMRU = 0;
  /* Undocumented: invert negative values for nLimitMRU, so that command-line
  ** arguments similar to `head -5' with "option numbers" are possible. */
  if( nLimitMRU<0 ) nLimitMRU = -nLimitMRU;
  /* OUTER QUERY */
  blob_append_sql(&sql,"SELECT name, isprivate, mergeto,");
  if( brFlags & BRL_LIST_USERS ){
    blob_append_sql(&sql,
      " (SELECT group_concat(user) FROM ("
      "     SELECT DISTINCT * FROM ("
      "         SELECT coalesce(euser,user) AS user"
      "           FROM event"
      "          WHERE type='ci' AND objid IN ("
      "             SELECT rid FROM tagxref WHERE value=name)"
      "          ORDER BY 1)))"
    );
  }else{
    blob_append_sql(&sql, " NULL");
  }
  blob_append_sql(&sql," FROM (");
  /* INNER QUERY */
  switch( brFlags & BRL_OPEN_CLOSED_MASK ){
    case BRL_CLOSED_ONLY: {
      blob_append_sql(&sql,
        "SELECT name, isprivate, mtime, mergeto FROM tmp_brlist WHERE isclosed"
      );
      break;
    }

**          -a|--all         List all branches.  Default show only open branches
**          -c|--closed      List closed branches
**          -m|--merged      List branches merged into the current branch
**          -M|--unmerged    List branches not merged into the current branch
**          -p               List only private branches
**          -r               Reverse the sort order
**          -t               Show recently changed branches first
**          --self           List only branches where you participate
**          --username USER  List only branches where USER participate
**          --users N        List up to N users partipiating
**
**        The current branch is marked with an asterisk.  Private branches are
**        marked with a hash sign.
**
**        If GLOB is given, show only branches matching the pattern.
**
**        The "lsh" variant of this subcommand shows recently changed branches,

        fossil_print("%s: open as of %s on %.16s\n", zBrName, zDate, zUuid);
      }
    }
  }else if( strncmp(zCmd,"list",n)==0 ||
            strncmp(zCmd, "ls", n)==0 ||
            strcmp(zCmd, "lsh")==0 ){
    Stmt q;
    Blob txt = empty_blob;
    int vid;
    char *zCurrent = 0;
    const char *zBrNameGlob = 0;
    const char *zUser = find_option("username",0,1);
    const char *zUsersOpt = find_option("users",0,1);
    int nUsers = zUsersOpt ? atoi(zUsersOpt) : 0;
    int nLimit = 0;
    int brFlags = BRL_OPEN_ONLY;
    if( find_option("all","a",0)!=0 ) brFlags = BRL_BOTH;
    if( find_option("closed","c",0)!=0 ) brFlags = BRL_CLOSED_ONLY;
    if( find_option("t",0,0)!=0 ) brFlags |= BRL_ORDERBY_MTIME;
    if( find_option("r",0,0)!=0 ) brFlags |= BRL_REVERSE;
    if( find_option("p",0,0)!=0 ) brFlags |= BRL_PRIVATE;
    if( find_option("merged","m",0)!=0 ) brFlags |= BRL_MERGED;
    if( find_option("unmerged","M",0)!=0 ) brFlags |= BRL_UNMERGED;
    if( find_option("self","0",0)!=0 ){
      if( zUser ){
        fossil_fatal("flags --username and --self are mutually exclusive");
      }
      user_select();
      zUser = login_name();
    }

    if ( (brFlags & BRL_MERGED) && (brFlags & BRL_UNMERGED) ){
      fossil_fatal("flags --merged and --unmerged are mutually exclusive");
    }
    if( zUsersOpt ){
      if( nUsers <= 0) fossil_fatal("With --users, N must be positive");
      brFlags |= BRL_LIST_USERS;
    }
    if( strcmp(zCmd, "lsh")==0 ){
      nLimit = 5;
      if( g.argc>4 || (g.argc==4 && (nLimit = atoi(g.argv[3]))==0) ){
        fossil_fatal("the lsh subcommand allows one optional numeric argument");
      }
      brFlags |= BRL_ORDERBY_MTIME;
    }else{
      if( (g.argc == 4 || g.argc == 5)
       && fossil_strcmp(g.argv[g.argc-1], "--user") == 0 ){
        fossil_fatal("Missing argument for --user");
      }
      if( g.argc >= 4 ) zBrNameGlob = g.argv[3];
    }

    if( g.localOpen ){
      vid = db_lget_int("checkout", 0);
      zCurrent = db_text(0, "SELECT value FROM tagxref"
                            " WHERE rid=%d AND tagid=%d", vid, TAG_BRANCH);
    }
    branch_prepare_list_query(&q, brFlags, zBrNameGlob, nLimit, zUser);
    blob_init(&txt, 0, 0);
    while( db_step(&q)==SQLITE_ROW ){
      const char *zBr = db_column_text(&q, 0);
      int isPriv = zCurrent!=0 && db_column_int(&q, 1)==1;
      const char *zMergeTo = db_column_text(&q, 2);
      int isCur = zCurrent!=0 && fossil_strcmp(zCurrent,zBr)==0;
      const char *zUsers = db_column_text(&q, 3);
      if( (brFlags & BRL_MERGED) && fossil_strcmp(zCurrent,zMergeTo)!=0 ){
        continue;
      }
      if( (brFlags & BRL_UNMERGED) && (fossil_strcmp(zCurrent,zMergeTo)==0 
          || isCur) ){
        continue;
      }
      blob_appendf(&txt, "%s%s%s",
        ( (brFlags & BRL_PRIVATE) ? " " : ( isPriv ? "#" : " ") ),
        (isCur ? "* " : "  "), zBr);
      if( nUsers ){
        char c;
        const char *cp;
        const char *pComma = 0;
        int commas = 0;
        for( cp = zUsers; ( c = *cp ) != 0; cp++ ){
          if( c == ',' ){
            commas++;
            if( commas == nUsers ) pComma = cp;
          }
        }
        if( pComma ){
          blob_appendf(&txt, " (%.*s,... %i more)",
            pComma - zUsers, zUsers, commas + 1 - nUsers);
        }else{
          blob_appendf(&txt, " (%s)", zUsers);
        }
      }
      fossil_print("%s\n", blob_str(&txt));
      blob_reset(&txt);
    }
    db_finalize(&q);
  }else if( strncmp(zCmd,"new",n)==0 ){
    branch_new();
  }else if( strncmp(zCmd,"close",5)==0 ){
    if(g.argc<4){
      usage("branch close branch-name(s)...");