继续分析：

setup_dictionary();

展开：

其中：

cmd 是："/home/pgsql/project/bin/postgres" --single -F -O -c search_path=pg_catalog -c exit_on_error=true -j template1 >/dev/null

dictionary_file 是：/home/pgsql/project/share/snowball_create.sql

/* * load extra dictionaries (Snowball stemmers) */static voidsetup_dictionary(void){    PG_CMD_DECL;    char      **line;    char      **conv_lines;    fputs(_("creating dictionaries ... "), stdout);    fflush(stdout);    /*     * We use -j here to avoid backslashing stuff     */    snprintf(cmd, sizeof(cmd),             "\"%s\" %s -j template1 >%s",             backend_exec, backend_options,             DEVNULL);    PG_CMD_OPEN;    conv_lines = readfile(dictionary_file);    for (line = conv_lines; *line != NULL; line++)    {        PG_CMD_PUTS(*line);        free(*line);    }    free(conv_lines);    PG_CMD_CLOSE;    check_ok();}