diff --git a/CMakeLists.txt b/CMakeLists.txt
index b5b3461..83079b6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -110,7 +110,7 @@ add_definitions(-DLOCALEDIR=\"${LOCALEDIR}\"
         -DMAJOR_VERSION=\"${MAJOR_VESION}\")
 
 # -l
-target_link_libraries(${PROJ} ${${PROJ}_LIBRARIES})
+target_link_libraries(${PROJ} ${${PROJ}_LIBRARIES} -lm)
 
 set(PCFILE "${CMAKE_BINARY_DIR}/${PROJ}.pc")
 configure_file("${PROJ}.pc.in" ${PCFILE} @ONLY)
@@ -154,7 +154,7 @@ if(NOT DEFINED NOGETTEXT)
         # we need this to prevent ru.po & .mo from deleting by make clean
         add_custom_target(
             RU_FILE
-            COMMAND [ -f ${RU_FILE} ] && ${GETTEXT_MSGMERGE_EXECUTABLE} -Uis ${RU_FILE} ${PO_FILE} || cp ${PO_FILE} ${RU_FILE}
+            COMMAND [ -f ${RU_FILE} ] && ${GETTEXT_MSGMERGE_EXECUTABLE} -UiF ${RU_FILE} ${PO_FILE} || cp ${PO_FILE} ${RU_FILE}
             DEPENDS ${PO_FILE} ${SOURCES}
         )
         add_custom_target(
diff --git a/Changelog b/Changelog
index 1775ef8..5132dfc 100644
--- a/Changelog
+++ b/Changelog
@@ -1,3 +1,12 @@
+Wed Sep 10 14:19:24 MSK 2025
+(still version 0.3.3: I forgot to add changelog last commits)
+- fixed minor bugs and memory leaks
+- use common way for parsing commandline arguments and content of configuration files, so now you can use arrays in configurations (several parameters with same name)
+- add functions:
+- - int sl_remove_quotes(char *string) - remove outern quotes (" and '), return amount of pairs found
+- - void sl_conf_showhelp(int idx, sl_option_t *options) - show help for config file parameters (only long options, without '--' and without exit(1) at the end of function)
+- - void sl_parseargs_hf(int *argc, char ***argv, sl_option_t *options, void (*helpfun)(int, sl_option_t*)) - now this funtion available for external using, parsing of arguments with user help function
+
 Dec 16 2024
 
 VERSION 0.2.1:
diff --git a/config.c b/config.c
index 74e2958..1b2d13e 100644
--- a/config.c
+++ b/config.c
@@ -24,6 +24,28 @@
 
 #include "usefull_macros.h"
 
+/**
+ * @brief sl_remove_quotes - remove all outern quotes - starting and trailng " and '
+ * @param (io) string to modify (if quotes found rest of string will be moved to head, tail will be zeroed)
+ * @return amount of quotation pair found
+ */
+int sl_remove_quotes(char *string){
+    if(!string) return 0;
+    int l = strlen(string);
+    if(l < 2) return 0;
+    int nq = 0, half = l/2;
+    for(; nq < half; ++nq){
+        char _1st = string[nq];
+        if(_1st != string[l-1-nq]) break;
+        if(_1st != '\'' && _1st != '"') break;
+    }
+    if(nq == 0) return 0;
+    l -= 2 * nq;
+    memmove(string, string + nq, l);
+    string[l] = 0;
+    return nq;
+}
+
 /**
  * @brief sl_get_keyval - get key name and its value from string pair
  * @param pair - empty string, `key = value` or just `key`
@@ -66,6 +88,7 @@ int sl_get_keyval(const char *pair, char key[SL_KEY_LEN], char value[SL_VAL_LEN]
     for(; kend < eq && !isspace(*kend); ++kend);
     size_t l = SL_KEY_LEN - 1;
     if(l > (size_t)(kend - kstart)) l = kend - kstart;
+    else if(l < (size_t)(kend - kstart)) WARNX(_("sl_get_keyval(): key would be trunkated to %d symbols"), l);
     //DBG("kend=%c, kstart=%c, l=%zd", *kend, *kstart, l);
     strncpy(key, kstart, l);
     key[l] = 0;
@@ -90,13 +113,74 @@ static int read_key(FILE *file, char key[SL_KEY_LEN], char value[SL_VAL_LEN]){
     return r;
 }
 
-// search `opt` record for given `key`
-static sl_option_t *opt_search(const char *key, sl_option_t *options){
-    while(options->name){
-        if(0 == strcmp(key, options->name)) return options;
-        ++options;
+// print option value
+static size_t pr_val(sl_argtype_e type, void *argptr, char **buffer, size_t *buflen, size_t pos){
+    size_t maxlen = *buflen - pos - 1;
+    char *buf = *buffer + pos;
+    switch(type){
+        case arg_none:
+        case arg_int:
+            DBG("int %d", *(int*) argptr);
+            return snprintf(buf, maxlen, "%d", *(int*) argptr);
+        case arg_longlong:
+            DBG("long long %lld", *(long long*) argptr);
+            return snprintf(buf, maxlen, "%lld", *(long long*)argptr);
+        case arg_float:
+            DBG("float %g", *(float*) argptr);
+            return snprintf(buf, maxlen, "%g", *(float*) argptr);
+        case arg_double:
+            DBG("double %g", *(double*) argptr);
+            return snprintf(buf, maxlen, "%g", *(double*) argptr);
+        case arg_string:
+            if(!argptr || !(*(char**)argptr)){
+                return snprintf(buf, maxlen, "(null)");
+            }else if(!(**(char**)argptr)){
+                return snprintf(buf, maxlen, "(empty)");
+            }
+            char *str = *(char**) argptr;
+            DBG("string %s", str);
+            size_t z = strlen(str);
+            while(pos + z > *buflen + 5){
+                *buflen += BUFSIZ;
+                *buffer = realloc(*buffer, *buflen);
+                if(!*buffer) ERRX("realloc()");
+                maxlen += BUFSIZ;
+                buf = *buffer + pos;
+            }
+            return snprintf(buf, maxlen, "\"%s\"", str);
+        default:
+            DBG("function");
+            return snprintf(buf, maxlen, "\"(unsupported)\"");
     }
-    return NULL;
+    return 0;
+}
+
+// print one option
+static size_t print_opt(sl_option_t *opt, char **buffer, size_t *buflen, size_t pos){
+    if((ssize_t)*buflen - pos < 3 *(SL_KEY_LEN + SL_VAL_LEN)){
+        *buflen += BUFSIZ;
+        *buffer = realloc(*buffer, *buflen);
+        if(!*buffer) ERR("realloc()");
+    }
+    char *buf = *buffer + pos;
+    size_t l = 0, maxlen = *buflen - pos - 1;
+    size_t got = snprintf(buf, maxlen, "%s = ", opt->name);
+    l = got; maxlen -= got; buf += got;
+    if(opt->flag){
+        DBG("got flag '%d'", *opt->flag);
+        l += snprintf(buf, maxlen, "%d\n", *opt->flag);
+        return l;
+    }
+    if(!opt->argptr){ // ERR!
+        l += snprintf(buf, maxlen, "\"(no argptr)\"\n");
+        WARNX("Parameter \"%s\" have no argptr!", opt->name);
+        return l;
+    }
+    DBG("type: %d", opt->type);
+    got = pr_val(opt->type, opt->argptr, buffer, buflen, pos + l);
+    l += got; maxlen -= got; buf += got;
+    l += snprintf(buf, maxlen, "\n");
+    return l;
 }
 
 /**
@@ -108,156 +192,44 @@ static sl_option_t *opt_search(const char *key, sl_option_t *options){
 char *sl_print_opts(sl_option_t *opt, int showall){
     char *buf = MALLOC(char, BUFSIZ);
     size_t L = BUFSIZ, l = 0;
-    for(; opt->name; ++opt){
+    for(; opt->help; ++opt){
+        if(!opt->name) continue; // only show help - not config option!
         DBG("check %s", opt->name);
         if(!showall && opt->has_arg == NO_ARGS) continue; // show NO_ARGS only when `showall==TRUE`
         if(!showall && opt->type == arg_string && !opt->argptr) continue; // empty string
-        if((ssize_t)L - l < SL_KEY_LEN + SL_VAL_LEN + 5){
-            L += BUFSIZ;
-            buf = realloc(buf, L);
-            if(!buf) ERR("realloc()");
-        }
-        l += sprintf(buf + l, "%s=", opt->name);
-        if(opt->flag){
-            DBG("got flag '%d'", *opt->flag);
-            l += sprintf(buf + l, "%d\n", *opt->flag);
-            continue;
-        }
-        if(!opt->argptr){ // ERR!
-            l += sprintf(buf + l, "\"(no argptr)\"\n");
-            WARNX("Parameter \"%s\" have no argptr!", opt->name);
-            continue;
-        }
-        int z = 0;
-        DBG("type: %d", opt->type);
-        switch(opt->type){
-            case arg_none:
-            case arg_int:
-                DBG("int %d", *(int*) opt->argptr);
-                l += sprintf(buf + l, "%d", *(int*) opt->argptr);
-            break;
-            case arg_longlong:
-                DBG("long long %lld", *(long long*) opt->argptr);
-                l += sprintf(buf + l, "%lld", *(long long*) opt->argptr);
-            break;
-            case arg_float:
-                DBG("float %g", *(float*) opt->argptr);
-                l += sprintf(buf + l, "%g", *(float*) opt->argptr);
-            break;
-            case arg_double:
-                DBG("double %g", *(double*) opt->argptr);
-                l += sprintf(buf + l, "%g", *(double*) opt->argptr);
-            break;
-            case arg_string:
-                if(!opt->argptr || !(*(char*)opt->argptr)){
-                    l += sprintf(buf + l, "(null)");
-                    break;
-                }else if(!(**(char**)opt->argptr)){
-                    l += sprintf(buf + l, "(empty)");
-                    break;
-                }
-                DBG("string %s", *(char**) opt->argptr);
-                z = strlen(*(char**) opt->argptr);
-                while(l + z > L + 3){
-                    L += BUFSIZ;
-                    buf = realloc(buf, L);
-                }
-                l += sprintf(buf + l, "%s", *(char**) opt->argptr);
-            break;
-            default:
-                DBG("function");
-                l += sprintf(buf + l, "\"(unsupported)\"");
-            break;
-        }
-        l += sprintf(buf + l, "\n");
+        if(opt->has_arg == MULT_PAR){
+            sl_option_t tmpopt = *opt;
+            DBG("type: %d", tmpopt.type);
+            if(!opt->argptr){ DBG("No pointer to array!"); continue; }
+#if 0
+            void ***pp = (void***)opt->argptr;
+            if(!*(char***)pp){ DBG("Array is empty"); continue; }
+            while(**pp){
+                if(opt->type == arg_string){
+                    DBG("str");
+                    tmpopt.argptr = *pp; // string is pointer to pointer!
+                }else tmpopt.argptr = **pp;
+                if(!tmpopt.argptr){ DBG("null"); break; }
+                l += print_opt(&tmpopt, &buf, &L, l);
+                ++(*pp);
+            }
+#endif
+            void **pp = *(void***)opt->argptr;
+            if(!(char**)pp){ DBG("Array is empty"); continue; }
+            while(*pp){
+                if(opt->type == arg_string){
+                    DBG("str");
+                    tmpopt.argptr = pp; // string is pointer to pointer!
+                }else tmpopt.argptr = *pp;
+                if(!tmpopt.argptr){ DBG("null"); break; }
+                l += print_opt(&tmpopt, &buf, &L, l);
+                ++(pp);
+            }
+        }else l += print_opt(opt, &buf, &L, l);
     }
     return buf;
 }
 
-/**
- * @brief sl_set_optval - convert `val` to `oval` parameter according to argument type
- * @param oval (o) - value in int/long long/double/float
- * @param opt (i) - record with options
- * @param val (i) - new value
- * @return FALSE if failed (or wrong data range)
- */
-int sl_set_optval(sl_optval *oval, sl_option_t *opt, const char *val){
-    if(!oval || !opt || !val) return FALSE;
-    long long ll;
-    double d;
-    switch(opt->type){
-        case arg_none:
-        case arg_int:
-        case arg_longlong:
-            do{
-                if(!sl_str2ll(&ll, val)){
-                    break;
-                }
-                if(opt->type != arg_longlong){
-                    if(ll > INT_MAX || ll < INT_MIN){
-                        break;
-                    }
-                    oval->ival = (int)ll;
-                }else oval->llval = ll;
-                return TRUE;
-            }while(0);
-        break;
-        case arg_double:
-        case arg_float:
-            do{
-                if(!sl_str2d(&d, val)){
-                    break;
-                }
-                if(opt->type == arg_double){
-                    oval->dval = d;
-                }else{
-                    if(d > FLT_MAX || d < FLT_MIN){
-                        break;
-                    }
-                    oval->fval = (float)d;
-                }
-                return TRUE;
-            }while(0);
-        break;
-        case arg_string:
-            return TRUE;
-        break;
-        default:
-            WARNX(_("Unsupported option type"));
-            return FALSE;
-    }
-    WARNX(_("Wrong number format '%s'"), val);
-    return FALSE;
-}
-
-// increment opt->argptr or set it to val
-static void setoa(sl_option_t *opt, const char *val){
-    if(!opt || !opt->argptr || opt->type == arg_function) return;
-    sl_optval O;
-    if(!sl_set_optval(&O, opt, val)) return;
-    switch(opt->type){
-        case arg_none: // increment integer
-            *(int*) opt->argptr += O.ival;
-        break;
-        case arg_int:
-            *(int*) opt->argptr = O.ival;
-        break;
-        case arg_longlong:
-            *(long long*) opt->argptr = O.llval;
-        break;
-        case arg_double:
-            *(double*) opt->argptr = O.dval;
-        break;
-        case arg_float:
-            *(float*) opt->argptr = O.fval;
-        break;
-        case arg_string:
-            *(char**)opt->argptr = strdup(val);
-        break;
-        default:
-        break;
-    }
-}
 
 /**
  * @brief sl_conf_readopts - simplest configuration:
@@ -273,29 +245,85 @@ int sl_conf_readopts(const char *filename, sl_option_t *options){
         WARN(_("Can't open %s"), filename);
         return 0;
     }
-    int N = 0;
-    char key[SL_KEY_LEN], val[SL_VAL_LEN];
+    int argc = 1;
+#define BUFSZ   (SL_KEY_LEN+SL_VAL_LEN+8)
+    char key[SL_KEY_LEN], val[SL_VAL_LEN], obuf[BUFSZ];
+    int argvsize = 0;
+    char **argv = NULL;
     do{
         int r = read_key(f, key, val);
         if(r < 0) break;
         if(r == 0) continue;
-        sl_option_t *opt = opt_search(key, options);
-        if(!opt){
-            WARNX(_("Wrong key: '%s'"), key);
-            continue;
+        DBG("key='%s', val='%s'", key, (r == 2) ? val : "(absent)");
+        ++argc;
+        if(argvsize <= argc){
+            argvsize += 256;
+            argv = realloc(argv, sizeof(char*) * argvsize);
+            if(!argv) ERRX("sl_conf_readopts: realloc() error");
         }
-        if(opt->flag) *opt->flag = opt->val;
-        if(r == 1){ // only key
-            if(opt->has_arg != NO_ARGS && opt->has_arg != OPT_ARG){
-                WARNX(_("Key '%s' need value"), opt->name);
-                continue;
-            }
-            if(opt->argptr) setoa(opt, "1");
-        }else{ // key + value
-            if(opt->argptr) setoa(opt, val);
-            else WARNX(_("Key '%s' have no argptr!"), opt->name);
-        }
-        ++N;
+        if(argc == 2) argv[0] = strdup(__progname); // all as should be
+        if(r == 2){
+            // remove trailing/ending quotes
+            sl_remove_quotes(val);
+            snprintf(obuf, BUFSZ-1, "--%s=%s", key, val);
+        }else snprintf(obuf, BUFSZ-1, "--%s", key);
+        DBG("next argv: '%s'", obuf);
+        argv[argc-1] = strdup(obuf);
     }while(1);
-    return N;
+    if(!argc) return 0;
+    int N = argc; char **a = argv;
+    sl_parseargs_hf(&argc, &a, options, sl_conf_showhelp);
+    for(int n = 0; n < N; ++n) free(argv[n]);
+    free(argv);
+    return N - argc; // amount of recognized options
+}
+
+// sort only by long options
+static int confsort(const void *a1, const void *a2){
+    const sl_option_t *o1 = (sl_option_t*)a1, *o2 = (sl_option_t*)a2;
+    const char *l1 = o1->name, *l2 = o2->name;
+    // move empty options to end of list
+    if(!l1 && !l2) return 1;
+    if(!l1) return 1;
+    if(!l2) return -1;
+    return strcmp(l1, l2);
+}
+
+static void pr_helpstring(sl_option_t *opt){
+    if(!opt->name || !opt->help) return;
+    printf("  %s", opt->name);
+    if(opt->has_arg == NEED_ARG || opt->has_arg == MULT_PAR) // required argument
+        printf(" = arg");
+    else if(opt->has_arg == OPT_ARG) // optional argument
+        printf(" [= arg]");
+    printf(" -- %s", opt->help);
+    if(opt->has_arg == MULT_PAR) printf(" (can occur multiple times)");
+    printf("\n");
+}
+
+/**
+ * @brief sl_conf_showhelp - show help for config file
+ *      (the same as `sl_showhelp`, but without "--", short opts and exit()
+ * @param options - config options (only long opts used)
+ */
+void sl_conf_showhelp(int idx, sl_option_t *options){
+    if(!options || !(*options).help) return;
+    // count amount of options
+    sl_option_t *opts = options;
+    int N; for(N = 0; opts->help; ++N, ++opts);
+    if(N == 0) exit(-2);
+    if(idx > -1){
+        if(idx >=N) WARNX(_("sl_conf_showhelp(): wrong index"));
+        else pr_helpstring(&options[idx]);
+        return;
+    }
+    sl_option_t *tmpopts = MALLOC(sl_option_t, N);
+    memcpy(tmpopts, options, N*sizeof(sl_option_t));
+    printf(_("Configuration file options (format: key=value):\n"));
+    qsort(tmpopts, N, sizeof(sl_option_t), confsort);
+    for(int _ = 0; _ < N; ++_){
+        if(!tmpopts[_].name) continue;
+        pr_helpstring(&tmpopts[_]);
+    }
+    free(tmpopts);
 }
diff --git a/examples/cmdlnopts.c b/examples/cmdlnopts.c
index 3593503..0d519cd 100644
--- a/examples/cmdlnopts.c
+++ b/examples/cmdlnopts.c
@@ -50,22 +50,28 @@ static glob_pars const Gdefault = {
 /*
  * Define command line options by filling structure:
  *  name        has_arg     flag    val     type        argptr              help
+ *  BE carefull! The `help` field is mandatory! Omitting it equivalent of 'end_option'
 */
 static sl_option_t cmdlnopts[] = {
-    {"lo0",     NEED_ARG,   NULL,     0,    arg_int,    APTR(&G.lo0),       _("only long arg 0")},
+    // short option in only-long options should be zeroed, or you can add flag to set it to given value
+    {"lo0",     NEED_ARG,   NULL,     0,    arg_int,    APTR(&G.lo0),       _("only long arg 0 (int)")},
+    // for short-only options long option can be NULL
+    {NULL,      NEED_ARG,   NULL,   '0',    arg_string, APTR(&G.so1),       _("only short arg 1 (string)")},
+    // if you change `arg_int` to `arg_none`, value will be incremented each `-h`
     {"help",    NO_ARGS,    NULL,   'h',    arg_int,    APTR(&help),        _("show this help")},
-//    {"dup",		NO_ARGS,    NULL,   'h',    arg_int,    APTR(&help),        _("show this help")},
     {"device",  NEED_ARG,   NULL,   'd',    arg_string, APTR(&G.device),    _("serial device name")},
-    {"lo2",     NEED_ARG,   NULL,     0,    arg_int,    APTR(&G.lo2),       _("only long arg 2")},
+    // for short-only options long option can also be an empty string
+    {"",        NEED_ARG,   NULL,   '1',    arg_string, APTR(&G.so2),       _("only short arg 2 (string)")},
+    {"lo2",     NEED_ARG,   NULL,     0,    arg_int,    APTR(&G.lo2),       _("only long arg 2 (int)")},
     {"speed",   NEED_ARG,   NULL,   's',    arg_int,    APTR(&G.speed),     _("serial device speed (default: 9600)")},
     {"logfile", NEED_ARG,   NULL,   'l',    arg_string, APTR(&G.logfile),   _("file to save logs")},
     {"pidfile", NEED_ARG,   NULL,   'P',    arg_string, APTR(&G.pidfile),   _("pidfile (default: " DEFAULT_PIDFILE ")")},
     {"exclusive",NO_ARGS,   NULL,   'e',    arg_int,    APTR(&G.exclusive), _("open serial device exclusively")},
     // example of multiple options
-    {"Int",     MULT_PAR,   NULL,   'I',    arg_int,    APTR(&G.intarr),    _("integer multiplying parameter")},
-    {"Dbl",     MULT_PAR,   NULL,   'D',    arg_double, APTR(&G.dblarr),    _("double multiplying parameter")},
-    {"Str",     MULT_PAR,   NULL,   'S',    arg_string, APTR(&G.strarr),    _("string multiplying parameter")},
-    {"lo1",     NEED_ARG,   NULL,     0,    arg_int,    APTR(&G.lo1),       _("only long arg 1")},
+    {"Int",     MULT_PAR,   NULL,   'I',    arg_int,    APTR(&G.intarr),    _("integer parameter")},
+    {"Dbl",     MULT_PAR,   NULL,   'D',    arg_double, APTR(&G.dblarr),    _("double parameter")},
+    {"Str",     MULT_PAR,   NULL,   'S',    arg_string, APTR(&G.strarr),    _("string parameter")},
+    {"lo1",     NEED_ARG,   NULL,     0,    arg_int,    APTR(&G.lo1),       _("only long arg 1 (int)")},
     end_option
 };
 
diff --git a/examples/cmdlnopts.h b/examples/cmdlnopts.h
index 7e105f7..03ff099 100644
--- a/examples/cmdlnopts.h
+++ b/examples/cmdlnopts.h
@@ -38,6 +38,8 @@ typedef struct{
     int lo0;                // only long options
     int lo1;
     int lo2;
+    char *so1;              // only short options
+    char *so2;
     int rest_pars_num;      // number of rest parameters
     char** rest_pars;       // the rest parameters: array of char*
 } glob_pars;
diff --git a/examples/conffile.c b/examples/conffile.c
index 5be72fd..7571446 100644
--- a/examples/conffile.c
+++ b/examples/conffile.c
@@ -23,12 +23,10 @@
 #include "usefull_macros.h"
 
 typedef struct{
-    char *sp1;
-    char *sp2;
+    char **sp;
     int ip1;
     int ip2;
-    double dp1;
-    double dp2;
+    double **dp;
     float fp1;
     float fp2;
     int help;
@@ -36,66 +34,94 @@ typedef struct{
     char *confname;
 } parameters;
 
-static parameters G = {
+static parameters G, parini = {
     .ip1 = INT_MIN,
     .ip2 = INT_MIN,
-    .dp1 = NAN,
-    .dp2 = NAN,
     .fp1 = NAN,
     .fp2 = NAN
 };
 
+#define CONFOPTS \
+    {"string",      MULT_PAR,   NULL,   's',    arg_string, APTR(&G.sp),    "string array"}, \
+    {"int1",        NEED_ARG,   NULL,   'i',    arg_int,    APTR(&G.ip1),   "integer one"}, \
+    {"int2",        NEED_ARG,   NULL,   'u',    arg_int,    APTR(&G.ip2),   "integer two"}, \
+    {"double",      MULT_PAR,   NULL,   'd',    arg_double, APTR(&G.dp),    "double array"}, \
+    {"float1",      NEED_ARG,   NULL,   'f',    arg_float,  APTR(&G.fp1),   "float one"}, \
+    {"float2",      NEED_ARG,   NULL,   'l',    arg_float,  APTR(&G.fp2),   "float two"}, \
+    {"verbose",     NO_ARGS,    NULL,   'v',    arg_none,   APTR(&G.verbose),"verbose level (each -v adds 1)"},
+
 static sl_option_t cmdlnopts[] = {
     {"help",        NO_ARGS,    NULL,   'h',    arg_int,    APTR(&G.help),  "show this help"},
-    {"string1",     NEED_ARG,   NULL,   's',    arg_string, APTR(&G.sp1),   "string one"},
-    {"string2",     NEED_ARG,   NULL,   'c',    arg_string, APTR(&G.sp2),   "string two"},
-    {"int1",        NEED_ARG,   NULL,   'i',    arg_int,    APTR(&G.ip1),   "integer one"},
-    {"int2",        NEED_ARG,   NULL,   'u',    arg_int,    APTR(&G.ip2),   "integer two"},
-    {"double1",     NEED_ARG,   NULL,   'd',    arg_double, APTR(&G.dp1),   "double one"},
-    {"double2",     NEED_ARG,   NULL,   'o',    arg_double, APTR(&G.dp2),   "double two"},
-    {"float1",      NEED_ARG,   NULL,   'f',    arg_float,  APTR(&G.fp1),   "float one"},
-    {"float2",      NEED_ARG,   NULL,   'l',    arg_float,  APTR(&G.fp2),   "float two"},
+    CONFOPTS
     {"config",      NEED_ARG,   NULL,   'C',    arg_string, APTR(&G.confname),"name of configuration file"},
-    {"verbose",     NO_ARGS,    NULL,   'v',    arg_none,   APTR(&G.verbose),"verbose level (each -v adds 1)"},
+    end_option
+};
+// config options - without some unneed
+static sl_option_t confopts[] = {
+    CONFOPTS
     end_option
 };
 
-
 int main(int argc, char **argv){
     sl_init();
+    G = parini;
     sl_parseargs(&argc, &argv, cmdlnopts);
     if(G.help) sl_showhelp(-1, cmdlnopts);
+    // if you will end main options with '--', you can write some additional options after and again run sl_parseargs with other sl_option_t array
+    if(argc) for(int i = 0; i < argc; ++i){
+        red("Extra arg: `%s`\n", argv[i]);
+    }
     sl_loglevel_e lvl = G.verbose + LOGLEVEL_ERR;
     if(lvl >= LOGLEVEL_AMOUNT) lvl = LOGLEVEL_AMOUNT - 1;
     printf("verbose level: %d\n", lvl);
-    if(G.sp1){
-        printf("Parsing of string1: ");
-        char key[SL_KEY_LEN], val[SL_VAL_LEN];
-        int k = sl_get_keyval(G.sp1, key, val);
-        switch(k){
-            case 0:
-                red("key not found\n");
-            break;
-            case 1:
-                green("got key='%s'\n", key);
-            break;
-            default:
-                green("got key='%s', value='%s'\n", key, val);
+    if(G.sp){
+        char **s = G.sp;
+        while(*s){
+            printf("Parsing of string: ");
+            char key[SL_KEY_LEN], val[SL_VAL_LEN];
+            int k = sl_get_keyval(*s, key, val);
+            switch(k){
+                case 0:
+                    red("key not found\n");
+                break;
+                case 1:
+                    green("got key='%s'\n", key);
+                break;
+                default:
+                    green("got key='%s', value='%s'\n", key, val);
+            }
+            ++s;
         }
     }
     green("Starting parameters values:\n");
     char *buf = sl_print_opts(cmdlnopts, TRUE);
     printf("%s\n", buf);
-    FREE(buf);
+    FREE(buf); // don't forget to `free` this buffer
     if(G.confname){
-        int o = sl_conf_readopts(G.confname, cmdlnopts);
+        const char *confname = G.confname;
+        G = parini;
+        printf("now v=%d\n", G.verbose);
+        int o = sl_conf_readopts(confname, confopts);
         if(o > 0){
-            printf("got %d options in '%s'\n", o, G.confname);
+            printf("got %d options in '%s'\n", o, confname);
             green("And after reading of conffile:\n");
-            buf = sl_print_opts(cmdlnopts, TRUE);
+            buf = sl_print_opts(confopts, TRUE);
             printf("%s\n", buf);
             FREE(buf);
         }
+        // if we want to re-read conffile many times over program runs, don't forget to `free` old arrays like this:
+        if(G.dp){
+            DBG("Clear double array");
+            double **p = G.dp;
+            while(*p){ FREE(*p); ++p; }
+            FREE(G.dp);
+        }
+        if(G.sp){
+            DBG("Clear string array %s", *G.sp);
+            char **s = G.sp;
+            while(*s){ FREE(*s); ++s; }
+            FREE(G.sp);
+        }
     }
     return 0;
 }
diff --git a/examples/options.c b/examples/options.c
index 630477d..bf355b7 100644
--- a/examples/options.c
+++ b/examples/options.c
@@ -67,12 +67,6 @@ int main(int argc, char *argv[]){
     }
     sl_check4running((char*)__progname, GP->pidfile);
     red("%s started, snippets library version is %s\n", __progname, sl_libversion());
-    sl_setup_con();
-    signal(SIGTERM, signals); // kill (-15) - quit
-    signal(SIGHUP, SIG_IGN);  // hup - ignore
-    signal(SIGINT, signals);  // ctrl+C - quit
-    signal(SIGQUIT, signals); // ctrl+\ - quit
-    signal(SIGTSTP, SIG_IGN); // ignore ctrl+Z
     if(GP->logfile) OPENLOG(GP->logfile, LOGLEVEL_ANY, 1);
     LOGMSG("Start application...");
     if(GP->rest_pars_num){
@@ -89,11 +83,22 @@ int main(int argc, char *argv[]){
     }
     if(GP->strarr){
         char **p = GP->strarr;
-        for(int i = 0; *p; ++i) printf("String[%d]: \"%s\"\n", i, *p++);
+        for(int i = 0; *p; ++i){
+            sl_remove_quotes(*p);
+            printf("String[%d]: \"%s\"\n", i, *p++);
+        }
     }
     if(GP->lo0 != INT_MIN) printf("You set lo0 to %d\n", GP->lo0);
     if(GP->lo1 != INT_MIN) printf("You set lo1 to %d\n", GP->lo1);
     if(GP->lo2 != INT_MIN) printf("You set lo2 to %d\n", GP->lo2);
+    if(GP->so1){
+        sl_remove_quotes(GP->so1);
+        printf("String so1=%s\n", GP->so1);
+    }
+    if(GP->so2){
+        sl_remove_quotes(GP->so2);
+        printf("String so2=%s\n", GP->so2);
+    }
     if(GP->device){
         LOGDBG("Try to open serial %s", GP->device);
         dev = sl_tty_new(GP->device, GP->speed, 4096);
@@ -103,7 +108,13 @@ int main(int argc, char *argv[]){
             signals(0);
         }
     }
-
+    if(!dev) return 0;
+    sl_setup_con();
+    signal(SIGTERM, signals); // kill (-15) - quit
+    signal(SIGHUP, SIG_IGN);  // hup - ignore
+    signal(SIGINT, signals);  // ctrl+C - quit
+    signal(SIGQUIT, signals); // ctrl+\ - quit
+    signal(SIGTSTP, SIG_IGN); // ignore ctrl+Z
     // main stuff goes here
     long seed = sl_random_seed();
     green("Now I will sleep for 10 seconds after your last input.\n Do whatever you want. Random seed: %ld\n", seed);
diff --git a/locale/ru/LC_MESSAGES/usefull_macros.mo b/locale/ru/LC_MESSAGES/usefull_macros.mo
index 4ca8b88..b302ff2 100644
Binary files a/locale/ru/LC_MESSAGES/usefull_macros.mo and b/locale/ru/LC_MESSAGES/usefull_macros.mo differ
diff --git a/locale/ru/messages.po b/locale/ru/messages.po
index 8246731..5701fe6 100644
--- a/locale/ru/messages.po
+++ b/locale/ru/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-06-27 11:51+0300\n"
+"POT-Creation-Date: 2025-09-10 12:08+0300\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -17,33 +17,23 @@ msgstr ""
 "Content-Type: text/plain; charset=koi8-r\n"
 "Content-Transfer-Encoding: 8bit\n"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:226
-msgid "Unsupported option type"
-msgstr ""
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:229
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:91
 #, c-format
-msgid "Wrong number format '%s'"
+msgid "sl_get_keyval(): key would be trunkated to %d symbols"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:273
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:245
 #, c-format
 msgid "Can't open %s"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:284
-#, c-format
-msgid "Wrong key: '%s'"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:316
+msgid "sl_conf_showhelp(): wrong index"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:290
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:322
 #, c-format
-msgid "Key '%s' need value"
-msgstr ""
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:296
-#, c-format
-msgid "Key '%s' have no argptr!"
+msgid "Configuration file options (format: key=value):\n"
 msgstr ""
 
 #: /home/eddy/Docs/SAO/C_diff/snippets_library/daemon.c:69
@@ -71,7 +61,19 @@ msgstr ""
 msgid "Integer out of range"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:166
+#. `opt` should be ':' for "missed arguments", '?' for "not found" and short flag if found and checked
+#. not found
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:129
+#, c-format
+msgid "No such parameter: `%s`\n"
+msgstr ""
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:138
+#, c-format
+msgid "Parameter `%s` needs value\n"
+msgstr ""
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:163
 msgid "Can't use multiple args with arg_none!"
 msgstr ""
 
@@ -85,22 +87,32 @@ msgstr ""
 msgid "double short arguments: -%c"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:332
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:343
 #, c-format
 msgid "Need argument with %s type\n"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:486
+#. print only one message
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:435
+msgid "sl_showhelp(): option index out of range"
+msgstr ""
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:441
+#, c-format
+msgid "Usage: %s [arguments]\n"
+msgstr ""
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:528
 #, c-format
 msgid "Wrong parameter: %s"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:490
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:532
 #, c-format
 msgid "%s: need argument!"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:494
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:536
 #, c-format
 msgid "Wrong argument \"%s\" of parameter \"%s\""
 msgstr ""
@@ -109,35 +121,35 @@ msgstr ""
 msgid "Server disconnected"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:390
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:385
 msgid "Can't start server handlers thread"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:459
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:454
 msgid "Limit of connections reached"
 msgstr ""
 
 #. check for RB overflow
 #. -1 - buffer empty (can't be), -2 - buffer overflow
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:503
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:504
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:498
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:499
 #, c-format
 msgid "Server thread: ring buffer overflow for fd=%d"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:518
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:513
 #, c-format
 msgid "Server thread: can't write data to ringbuffer: overflow from fd=%d"
 msgstr ""
 
 #. buffer overflow
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:530
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:525
 #, c-format
 msgid "Server thread: buffer overflow from fd=%d"
 msgstr ""
 
 #. never reached
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:620
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:615
 #, c-format
 msgid "Unsupported socket type %d"
 msgstr ""
@@ -215,18 +227,3 @@ msgstr ""
 #: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:347
 msgid "Can't setup console"
 msgstr ""
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:403
-#, c-format
-msgid "Wrong double number format '%s'"
-msgstr ""
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:416
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:428
-#, c-format
-msgid "Wrong integer number format '%s'"
-msgstr ""
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:432
-msgid "Number out of integer limits"
-msgstr ""
diff --git a/locale/ru/ru.po b/locale/ru/ru.po
index 8565b7a..fbadb83 100644
--- a/locale/ru/ru.po
+++ b/locale/ru/ru.po
@@ -7,7 +7,7 @@
 msgid   ""
 msgstr  "Project-Id-Version: PACKAGE VERSION\n"
         "Report-Msgid-Bugs-To: \n"
-        "POT-Creation-Date: 2025-06-27 11:49+0300\n"
+        "POT-Creation-Date: 2025-09-10 12:08+0300\n"
         "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
         "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
         "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -16,6 +16,25 @@ msgstr  "Project-Id-Version: PACKAGE VERSION\n"
         "Content-Type: text/plain; charset=koi8-r\n"
         "Content-Transfer-Encoding: 8bit\n"
 
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:91
+#, c-format
+msgid   "sl_get_keyval(): key would be trunkated to %d symbols"
+msgstr  "sl_get_keyval(): ключ будет обрезан до %d символов"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:245
+#, c-format
+msgid   "Can't open %s"
+msgstr  "Не могу открыть %s"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:316
+msgid   "sl_conf_showhelp(): wrong index"
+msgstr  "sl_conf_showhelp(): неверный индекс"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:322
+#, c-format
+msgid   "Configuration file options (format: key=value):\n"
+msgstr  ""
+
 #: /home/eddy/Docs/SAO/C_diff/snippets_library/daemon.c:69
 #, c-format
 msgid   "\n"
@@ -23,159 +42,114 @@ msgid   "\n"
 msgstr  "\n"
         "Обнаружен одноименный процесс (pid=%d), выход.\n"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:490
-#, c-format
-msgid   "%s: need argument!"
-msgstr  "%s: необходим аргумент!"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:119
-msgid   "Can't apply new TTY settings"
-msgstr  "Не могу сменить настройки порта"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:266
-msgid   "Can't close mmap'ed file"
-msgstr  "Не могу закрыть mmap'нутый файл"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:130
-msgid   "Can't do exclusive open"
-msgstr  "Не могу перевести порт в эксклюзивный режим"
-
-#. Get settings
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:106
-msgid   "Can't get old TTY settings"
-msgstr  "Не могу получить действующие настройки порта"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:279
-msgid   "Can't munmap"
-msgstr  "Не могу munmap"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:273
-#, c-format
-msgid   "Can't open %s"
-msgstr  "Не могу открыть %s"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:252
-#, c-format
-msgid   "Can't open %s for reading"
-msgstr  "Не могу открыть %s для чтения"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:194
-msgid   "Can't open /dev/random"
-msgstr  "Не могу открыть /dev/random"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/daemon.c:141
-msgid   "Can't open PID file"
-msgstr  "Не могу открыть PID файл"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:198
-msgid   "Can't read /dev/random"
-msgstr  "Не могу прочесть /dev/random"
-
 #. error reading self name
 #: /home/eddy/Docs/SAO/C_diff/snippets_library/daemon.c:117
 msgid   "Can't read self name"
 msgstr  "Не могу прочесть имя процесса"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:124
-#, c-format
-msgid   "Can't set speed %d, got ispeed=%d, ospeed=%d"
-msgstr  "Не могу сменить скорость на %d; ispeed=%d, ospeed=%d"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/daemon.c:141
+msgid   "Can't open PID file"
+msgstr  "Не могу открыть PID файл"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:347
-msgid   "Can't setup console"
-msgstr  "Не могу настроить консоль"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:390
-msgid   "Can't start server handlers thread"
-msgstr  "Не могу запустить поток-обработчик сервера"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:256
-#, c-format
-msgid   "Can't stat %s"
-msgstr  "Не могу выполнить stat %s"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:166
-msgid   "Can't use multiple args with arg_none!"
-msgstr  "Массив параметров не может иметь тип arg_none!"
-
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:102
-#, c-format
-msgid   "Can't use port %s"
-msgstr  "Не могу использовать порт %s"
+#. amount of pcount and/or scount wrong
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:53
+msgid   "Wrong helpstring!"
+msgstr  "Неправильный формат строки помощи"
 
 #: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:82
 msgid   "Integer out of range"
 msgstr  "Целое вне допустимого диапазона"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:296
+#. `opt` should be ':' for "missed arguments", '?' for "not found" and short flag if found and checked
+#. not found
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:129
 #, c-format
-msgid   "Key '%s' have no argptr!"
-msgstr  "У ключа '%s' нет указателя на переменную!"
+msgid   "No such parameter: `%s`\n"
+msgstr  "Нет такого параметра: %s\n"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:290
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:138
 #, c-format
-msgid   "Key '%s' need value"
-msgstr  "Ключ '%s' требует значения"
+msgid   "Parameter `%s` needs value\n"
+msgstr  "Ключ '%s' требует значения\n"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:459
-msgid   "Limit of connections reached"
-msgstr  "Достигнут предел соединений"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:163
+msgid   "Can't use multiple args with arg_none!"
+msgstr  "Массив параметров не может иметь тип arg_none!"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:262
-msgid   "Mmap error for input"
-msgstr  "Ошибка mmap"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:267
+#, c-format
+msgid   "double long arguments: --%s"
+msgstr  "дублирующийся длинный параметр: --%s"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:332
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:273
+#, c-format
+msgid   "double short arguments: -%c"
+msgstr  "дублирующийся короткий параметр: -%c"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:343
 #, c-format
 msgid   "Need argument with %s type\n"
 msgstr  "Необходим аргумент с типом %s\n"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:168
-msgid   "Need non-zero buffer for TTY device"
-msgstr  "Для последовательного устройства требуется буфер ненулевого размера"
+#. print only one message
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:435
+msgid   "sl_showhelp(): option index out of range"
+msgstr  "sl_showhelp(): индекс опции вне допустимого диапазона"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:248
-msgid   "No filename given!"
-msgstr  "Не задано имя файла!"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:441
+#, c-format
+msgid   "Usage: %s [arguments]\n"
+msgstr  "Использование: %s [аргументы]\n"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:432
-msgid   "Number out of integer limits"
-msgstr  "Число за пределами int"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:528
+#, c-format
+msgid   "Wrong parameter: %s"
+msgstr  "Неправильный параметр: %s"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:162
-msgid   "Port name is missing"
-msgstr  "Отсутствует имя порта"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:532
+#, c-format
+msgid   "%s: need argument!"
+msgstr  "%s: необходим аргумент!"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:536
+#, c-format
+msgid   "Wrong argument \"%s\" of parameter \"%s\""
+msgstr  "Неправильный аргумент \"%s\" параметра \"%s\""
 
 #: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:147
 msgid   "Server disconnected"
 msgstr  "Сервер отключен"
 
-#. buffer overflow
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:530
-#, c-format
-msgid   "Server thread: buffer overflow from fd=%d"
-msgstr  "Поток сервера: переполнение буфера от fd=%d"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:385
+msgid   "Can't start server handlers thread"
+msgstr  "Не могу запустить поток-обработчик сервера"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:518
-#, fuzzy, c-format
-msgid   "Server thread: can't write data to ringbuffer: overflow from fd=%d"
-msgstr  "Поток сервера: не могу сохранить данные в кольцевом буфере, "
-        "переполнение от fd=%d"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:454
+msgid   "Limit of connections reached"
+msgstr  "Достигнут предел соединений"
 
 #. check for RB overflow
 #. -1 - buffer empty (can't be), -2 - buffer overflow
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:503
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:504
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:498
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:499
 #, c-format
 msgid   "Server thread: ring buffer overflow for fd=%d"
 msgstr  "Поток сервера: переполнение буфера от fd=%d"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:226
-msgid   "Unsupported option type"
-msgstr  "Неподдерживаемый тип опции"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:513
+#, c-format
+msgid   "Server thread: can't write data to ringbuffer: overflow from fd=%d"
+msgstr  "Поток сервера: не могу сохранить данные в кольцевом буфере, "
+        "переполнение от fd=%d"
+
+#. buffer overflow
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:525
+#, c-format
+msgid   "Server thread: buffer overflow from fd=%d"
+msgstr  "Поток сервера: переполнение буфера от fd=%d"
 
 #. never reached
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:620
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:615
 #, c-format
 msgid   "Unsupported socket type %d"
 msgstr  "Неподдерживаемый тип сокета %d"
@@ -187,48 +161,71 @@ msgid   "Wrong USART format \"%s\"; use NPS, where N: 5..8; P: N/E/O/1/0, S: "
 msgstr  "Неправильный формат USART \"%s\"; нужен NPS, где N: 5..8; P: N/E/O/"
         "1/0, S: 1/2"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:494
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:102
 #, c-format
-msgid   "Wrong argument \"%s\" of parameter \"%s\""
-msgstr  "Неправильный аргумент \"%s\" параметра \"%s\""
+msgid   "Can't use port %s"
+msgstr  "Не могу использовать порт %s"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:403
+#. Get settings
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:106
+msgid   "Can't get old TTY settings"
+msgstr  "Не могу получить действующие настройки порта"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:119
+msgid   "Can't apply new TTY settings"
+msgstr  "Не могу сменить настройки порта"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:124
 #, c-format
-msgid   "Wrong double number format '%s'"
-msgstr  "Неправильный формат double: %s"
+msgid   "Can't set speed %d, got ispeed=%d, ospeed=%d"
+msgstr  "Не могу сменить скорость на %d; ispeed=%d, ospeed=%d"
 
-#. amount of pcount and/or scount wrong
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:53
-msgid   "Wrong helpstring!"
-msgstr  "Неправильный формат строки помощи"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:130
+msgid   "Can't do exclusive open"
+msgstr  "Не могу перевести порт в эксклюзивный режим"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:416
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:428
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:162
+msgid   "Port name is missing"
+msgstr  "Отсутствует имя порта"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/term2.c:168
+msgid   "Need non-zero buffer for TTY device"
+msgstr  "Для последовательного устройства требуется буфер ненулевого размера"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:194
+msgid   "Can't open /dev/random"
+msgstr  "Не могу открыть /dev/random"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:198
+msgid   "Can't read /dev/random"
+msgstr  "Не могу прочесть /dev/random"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:248
+msgid   "No filename given!"
+msgstr  "Не задано имя файла!"
+
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:252
 #, c-format
-msgid   "Wrong integer number format '%s'"
-msgstr  "Неправильный формат целого: %s"
+msgid   "Can't open %s for reading"
+msgstr  "Не могу открыть %s для чтения"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:284
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:256
 #, c-format
-msgid   "Wrong key: '%s'"
-msgstr  "Неправильный ключ: %s"
+msgid   "Can't stat %s"
+msgstr  "Не могу выполнить stat %s"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/config.c:229
-#, c-format
-msgid   "Wrong number format '%s'"
-msgstr  "Неправильный формат числа: %s"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:262
+msgid   "Mmap error for input"
+msgstr  "Ошибка mmap"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:486
-#, c-format
-msgid   "Wrong parameter: %s"
-msgstr  "Неправильный параметр: %s"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:266
+msgid   "Can't close mmap'ed file"
+msgstr  "Не могу закрыть mmap'нутый файл"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:267
-#, c-format
-msgid   "double long arguments: --%s"
-msgstr  "дублирующийся длинный параметр: --%s"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:279
+msgid   "Can't munmap"
+msgstr  "Не могу munmap"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:273
-#, c-format
-msgid   "double short arguments: -%c"
-msgstr  "дублирующийся короткий параметр: -%c"
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/usefull_macros.c:347
+msgid   "Can't setup console"
+msgstr  "Не могу настроить консоль"
diff --git a/parseargs.c b/parseargs.c
index 263e8e8..8e4b7f7 100644
--- a/parseargs.c
+++ b/parseargs.c
@@ -30,7 +30,7 @@
 #include <ctype.h>  // isalpha
 #include "usefull_macros.h"
 
-char *helpstring = "%s\n";
+const char *helpstring = NULL; // will be inited later, can't init with gettext on this stage
 
 /**
  * @brief sl_helpstring - change standard help header
@@ -115,36 +115,33 @@ static int myatod(void *num, const char *str, sl_argtype_e t){
 
 /**
  * @brief get_optind  - get index of current option in array options
+ * @param key (i)     - original key (short or long)
  * @param opt (i)     - returning val of getopt_long
  * @param options (i) - array of options
  * @return index in array
  */
-static int get_optind(int opt, sl_option_t *options){
-    int oind;
+static int get_optind(const char *key, int opt, sl_option_t *options, void (*helpfun)(int, sl_option_t*)){
+    int oind = 0, theopt = opt;
     sl_option_t *opts = options;
     assert(opts);
-    for(oind = 0; opts->name && opts->val != opt; oind++, opts++){
-        DBG("cmp %c and %c", opt, opts->val);
+    // `opt` should be ':' for "missed arguments", '?' for "not found" and short flag if found and checked
+    if(opt == '?'){ // not found
+        fprintf(stderr, _("No such parameter: `%s`\n"), key);
+        helpfun(-1, options);
+        return -1; // never reached until `helpfun` changed
+    }else if(opt == ':') theopt = optopt; // search to show helpstring "need parameter"
+    for(oind = 0; opts->help && opts->val != theopt; oind++, opts++){
+        DBG("cmp %c and %c", theopt, opts->val);
+    }
+    if(!opts->help) return -1;
+    if(opt == ':'){
+        fprintf(stderr, _("Parameter `%s` needs value\n"), key);
+        helpfun(oind, options);
+        return -1; // never reached until `helpfun` changed
     }
-    if(!opts->name || opts->val != opt) // no such parameter
-        sl_showhelp(-1, options);
     return oind;
 }
-#if 0
-static int get_optindl(struct option *opt, sl_option_t *options){
-    int oind;
-    sl_option_t *opts = options;
-    assert(opts);
-    for(oind = 0; opts->name; ){
-        DBG("cmp '%s' and '%s'", opt->name, opts->name);
-        if(0 == strcmp(opt->name, opts->name)) break;
-        oind++, opts++;
-    }
-    if(!opts->name || strcmp(opt->name, opts->name)) // no such parameter
-        sl_showhelp(-1, options);
-    return oind;
-}
-#endif
+
 
 /**
  * @brief get_aptr - reallocate new value in array of multiple repeating arguments
@@ -194,41 +191,38 @@ void *get_aptr(void *paptr, sl_argtype_e type){
     return aptr[i - 1];
 }
 
-
 /**
- * @brief sl_parseargs - parse command line arguments
- * ! If arg is string, then value will be strdup'ed!
- *
- * @param argc (io) - address of argc of main(), return value of argc stay after `getopt`
- * @param argv (io) - address of argv of main(), return pointer to argv stay after `getopt`
- * BE CAREFUL! if you wanna use full argc & argv, save their original values before
- *      calling this function
- * @param options (i) - array of `myoption` for arguments parcing
- *
- * @exit: in case of error this function show help & make `exit(-1)`
-  */
-void sl_parseargs(int *argc, char ***argv, sl_option_t *options){
+ * @brief sl_parseargs_hf - parse arguments with user help funtion
+ * @param argc - amount of arguments
+ * @param argv - arguments
+ * @param options - array with opts
+ * @param helpfun - function called in case of wrong arg
+ */
+void sl_parseargs_hf(int *argc, char ***argv, sl_option_t *options, void (*helpfun)(int, sl_option_t*)){
     char *short_options, *soptr;
     struct option *long_options, *loptr;
-    size_t optsize, i;
+    int optsize = 0;
     sl_option_t *opts = options;
     // check whether there is at least one options
     assert(opts);
-    assert(opts[0].name);
+    //assert(opts[0].name);
     // first we count how much values are in opts
-    for(optsize = 0; opts->name; optsize++, opts++);
+    for(optsize = 0; opts->help; optsize++, opts++);
     // now we can allocate memory
-    short_options = calloc(optsize * 3 + 1, 1); // multiply by three for '::' in case of args in opts
+    // TODO: FREE all unneeded memory at end of function
+    short_options = calloc(optsize * 3 + 2, 1); // multiply by three for '::' in case of args in opts, add 1 for starting ':'
     long_options = calloc(optsize + 1, sizeof(struct option));
     opts = options; loptr = long_options; soptr = short_options;
+    *soptr++ = ':';
     // check the parameters are not repeated
     char **longlist = MALLOC(char*, optsize);
     char *shortlist = MALLOC(char, optsize);
     // fill short/long parameters and make a simple checking
-    for(i = 0; i < optsize; i++, loptr++, opts++){
+    for(int i = 0; i < optsize; i++, loptr++, opts++){
         // check
-        assert(opts->name); // check name
-        longlist[i] = strdup(opts->name);
+        //assert(opts->name); // check name
+        DBG("opts: val=%c, name=%s", opts->val, opts->name);
+        longlist[i] = opts->name ? strdup(opts->name) : NULL;
         if(opts->has_arg){
             assert(opts->type != arg_none); // check error with arg type
             assert(opts->argptr);  // check pointer
@@ -237,7 +231,7 @@ void sl_parseargs(int *argc, char ***argv, sl_option_t *options){
             assert(opts->argptr);
         // fill long_options
         // don't do memcmp: what if there would be different alignment?
-        loptr->name     = opts->name;
+        loptr->name     = opts->name ? opts->name : "";
         loptr->has_arg  = (opts->has_arg < MULT_PAR) ? opts->has_arg : 1;
         loptr->flag     = opts->flag;
         loptr->val      = opts->val;
@@ -253,7 +247,12 @@ void sl_parseargs(int *argc, char ***argv, sl_option_t *options){
     }
     // sort all lists & check for repeating
     int cmpstringp(const void *p1, const void *p2){
-        return strcmp(* (char * const *) p1, * (char * const *) p2);
+        if(!p1 || !p2) return 0;
+        const char *str1 = * (char * const *) p1, *str2 = * (char * const *) p2;
+        if(!str1 && !str2) return 0;
+        else if(!str1) return 1;
+        else if(!str2) return -1;
+        return strcmp(str1, str2);
     }
     int cmpcharp(const void *p1, const void *p2){
         return (int)(*(char * const)p1 - *(char *const)p2);
@@ -261,8 +260,9 @@ void sl_parseargs(int *argc, char ***argv, sl_option_t *options){
     qsort(longlist, optsize, sizeof(char *), cmpstringp);
     qsort(shortlist,optsize, sizeof(char), cmpcharp);
     char *prevl = longlist[0], prevshrt = shortlist[0];
-    for(i = 1; i < optsize; ++i){
-        if(longlist[i]){
+    // check for repeated args
+    for(int i = 1; i < optsize; ++i){
+        if(longlist[i] && *longlist[i]){
             if(prevl){
                 if(strcmp(prevl, longlist[i]) == 0) ERRX(_("double long arguments: --%s"), prevl);
             }
@@ -275,21 +275,32 @@ void sl_parseargs(int *argc, char ***argv, sl_option_t *options){
             prevshrt = shortlist[i];
         }
     }
+    FREE(longlist); FREE(shortlist);
+#ifdef EBUG
+    DBG("Argc=%d, argv[0]=%s, argv[1]=%s, short=%s", *argc, (*argv)[0], (*argv)[1], short_options);
+    for(int _ = 0; _ <= optsize; ++_) fprintf(stderr, "\tlo[%d]='%s'\n", _, long_options[_].name);
+    DBG("AND argv:");
+    for(int _ = 0; _ < *argc; ++_) fprintf(stderr, "\t[%d]='%s'\n", _ ,(*argv)[_]);
+#endif
+    // reinit global `optind` for ability of sequentional run
+    optind = 1;
     // now we have both long_options & short_options and can parse `getopt_long`
     while(1){
         int opt;
-        int /*oindex = -1,*/ optind = -1; // oindex - number of option in long_options, optind - number in options[]
-        if((opt = getopt_long(*argc, *argv, short_options, long_options, &optind)) == -1) break;
-        DBG("%c(%d) = getopt_long(argc, argv, %s, long_options, &%d); optopt=%c(%d), errno=%d", opt, opt, short_options, optind, optopt, optopt, errno);
-        if(optind < 0 ) optind = get_optind(opt, options); // find short option -> need to know index of long
+        int /*oindex = -1,*/ loptind = -1; // oindex - number of option in long_options, optind - number in options[]
+        DBG("optind=%d", optind);
+        const char *curopt = (*argv)[optind];
+        if((opt = getopt_long(*argc, *argv, short_options, long_options, &loptind)) == -1) break;
+        DBG("search `%s`, %c(%d) = getopt_long(argc, argv, %s, long_options, &%d); optopt=%c(%d), errno=%d", curopt, opt, opt, short_options, loptind, optopt, optopt, errno);
+        if(loptind < 0 ) loptind = get_optind(curopt, opt, options, helpfun); // find short option -> need to know index of long
+        if(loptind < 0 || loptind >= optsize) continue;
         // be careful with "-?" flag: all wrong or ambiguous flags will be interpreted as this!
-        DBG("index=%d", optind);
-        opts = &options[optind];
-        DBG("Got option %s", opts->name);
-
+        DBG("index=%d", loptind);
+        opts = &options[loptind];
+        DBG("Got option %s (%c)", opts->name, opts->val);
         // now check option
         if(opts->has_arg == NEED_ARG || opts->has_arg == MULT_PAR)
-            if(!optarg) sl_showhelp(optind, options); // need argument
+            if(!optarg) helpfun(loptind, options); // need argument
         void *aptr;
         if(opts->has_arg == MULT_PAR){
             aptr = get_aptr(opts->argptr, opts->type);
@@ -303,39 +314,55 @@ void sl_parseargs(int *argc, char ***argv, sl_option_t *options){
             default:
             case arg_none:
                 if(opts->argptr) *((int*)aptr) += 1; // increment value
-            break;
+                break;
             case arg_int:
                 result = myatoll(aptr, optarg, arg_int);
                 type = "integer";
-            break;
+                break;
             case arg_longlong:
                 result = myatoll(aptr, optarg, arg_longlong);
                 type = "long long";
-            break;
+                break;
             case arg_double:
                 result = myatod(aptr, optarg, arg_double);
                 type = "double";
-            break;
+                break;
             case arg_float:
                 result = myatod(aptr, optarg, arg_float);
                 type = "float";
-            break;
+                break;
             case arg_string:
                 result = (*((void**)aptr) = (void*)strdup(optarg)) != NULL;
                 type = "string";
-            break;
+                break;
             case arg_function:
                 result = ((sl_argfn_t)aptr)(optarg);
-            break;
+                break;
         }
         if(!result){
             if(type) fprintf(stderr, _("Need argument with %s type\n"), type);
-            sl_showhelp(optind, options);
+            helpfun(loptind, options);
         }
     }
+    FREE(short_options); FREE(long_options);
     *argc -= optind;
     *argv += optind;
 }
+/**
+ * @brief sl_parseargs - parse command line arguments
+ * ! If arg is string, then value will be strdup'ed!
+ *
+ * @param argc (io) - address of argc of main(), return value of argc stay after `getopt`
+ * @param argv (io) - address of argv of main(), return pointer to argv stay after `getopt`
+ * BE CAREFUL! if you wanna use full argc & argv, save their original values before
+ *      calling this function
+ * @param options (i) - array of `myoption` for arguments parcing
+ *
+ * @exit: in case of error this function show help & make `exit(-1)`
+  */
+void sl_parseargs(int *argc, char ***argv, sl_option_t *options){
+    sl_parseargs_hf(argc, argv, options, sl_showhelp);
+}
 
 /**
  * @brief argsort - compare function for qsort
@@ -350,6 +377,7 @@ static int argsort(const void *a1, const void *a2){
     if(f1 == NULL && f2 == NULL && s1 && s2){ // both have short arg
         return (s1 - s2);
     }else if((f1 != NULL || !s1) && (f2 != NULL || !s2)){ // both don't have short arg - sort by long
+        assert(l1); assert(l2); // no way to omit long option if short is absent
         return strcmp(l1, l2);
     }else{ // only one have short arg -- return it
         if(f2 || !s2) return -1; // a1 have short - it is 'lesser'
@@ -357,6 +385,34 @@ static int argsort(const void *a1, const void *a2){
     }
 }
 
+// print one string of help
+static void pr_helpstring(sl_option_t *opt, char *buf, int indent, size_t bufsz){
+    size_t p = sprintf(buf, "  "); // a little indent
+    int havelongopt = opt->name && *opt->name;
+    if(!opt->flag && opt->val){ // .val is short argument
+        p += snprintf(buf+p, bufsz-p, "-%c", opt->val);
+        if(havelongopt) p += snprintf(buf+p, bufsz-p, ", "); // show comma only it there's shor arg
+    }
+    if(havelongopt){
+        p += snprintf(buf+p, bufsz-p, "--%s", opt->name);
+        if(opt->has_arg == NEED_ARG || opt->has_arg == MULT_PAR) // required argument
+            p += snprintf(buf+p, bufsz-p, "=arg");
+        else if(opt->has_arg == OPT_ARG) // optional argument
+            p += snprintf(buf+p, bufsz-p, "[=arg]");
+    }else{
+        if(opt->has_arg == NEED_ARG || opt->has_arg == MULT_PAR)
+            p += snprintf(buf+p, bufsz-p, " arg");
+        else if(opt->has_arg == OPT_ARG)
+            p += snprintf(buf+p, bufsz-p, " [arg]");
+    }
+    if(indent > 0){
+        assert(p < (size_t)indent);
+        printf("%-*s%s", indent+1, buf, _(opt->help)); // write options & at least 2 spaces after
+    }else printf("%s   %s", buf, _(opt->help));
+    if(opt->has_arg == MULT_PAR) printf(" (can occur multiple times)");
+    printf("\n");
+}
+
 /**
  * @brief sl_showhelp - show help information based on sl_option_t->help values
  * @param oindex (i)  - if non-negative, show only help by sl_option_t[oindex].help
@@ -370,49 +426,35 @@ void sl_showhelp(int oindex, sl_option_t *options){
     char buf[bufsz+1];
     sl_option_t *opts = options;
     assert(opts);
-    assert(opts[0].name); // check whether there is at least one options
+    assert(opts[0].help); // check whether there is at least one options
+    // count amount of options
+    int N; for(N = 0; opts->help; ++N, ++opts);
+    if(N == 0) exit(-2);
+    DBG("got %d options, oindex=%d", N, oindex);
     if(oindex > -1){ // print only one message
-        opts = &options[oindex];
-        printf("  ");
-        if(!opts->flag && isalpha(opts->val)) printf("-%c, ", opts->val);
-        printf("--%s", opts->name);
-        if(opts->has_arg == 1) printf("=arg");
-        else if(opts->has_arg == 2) printf("[=arg]");
-        printf("  %s\n", _(opts->help));
+        if(oindex >= N || oindex < 0) ERRX(_("sl_showhelp(): option index out of range"));
+        pr_helpstring(&options[oindex], buf, 0, bufsz);
         exit(-1);
     }
     // header, by default is just "progname\n"
     printf("\n");
+    if(!helpstring) helpstring = _("Usage: %s [arguments]\n");
     if(strstr(helpstring, "%s")) // print progname
         printf(helpstring, __progname);
     else // only text
         printf("%s", helpstring);
     printf("\n");
     // count max_opt_len
-    do{
-        int L = strlen(opts->name);
+    for(int _ = 0; _ < N; ++_){
+        if(!options[_].name) continue;
+        int L = strlen(options[_].name);
         if(max_opt_len < L) max_opt_len = L;
-    }while((++opts)->name);
-    max_opt_len += 14; // format: '-S , --long[=arg]' - get addition 13 symbols
-    opts = options;
-    // count amount of options
-    int N; for(N = 0; opts->name; ++N, ++opts);
-    if(N == 0) exit(-2);
+    }
+    max_opt_len += 14; // format: '-S, --long[=arg]' - get addition 13 symbols
     // Now print all help (sorted)
-    opts = options;
-    qsort(opts, N, sizeof(sl_option_t), argsort);
+    qsort(options, N, sizeof(sl_option_t), argsort);
     do{
-        int p = sprintf(buf, "  "); // a little indent
-        if(!opts->flag && opts->val) // .val is short argument
-            p += snprintf(buf+p, bufsz-p, "-%c, ", opts->val);
-        p += snprintf(buf+p, bufsz-p, "--%s", opts->name);
-        if(opts->has_arg == 1) // required argument
-            p += snprintf(buf+p, bufsz-p, "=arg");
-        else if(opts->has_arg == 2) // optional argument
-            p += snprintf(buf+p, bufsz-p, "[=arg]");
-        assert(p < max_opt_len); // there would be magic if p >= max_opt_len
-        printf("%-*s%s\n", max_opt_len+1, buf, _(opts->help)); // write options & at least 2 spaces after
-        ++opts;
+        pr_helpstring(options++, buf, max_opt_len, bufsz);
     }while(--N);
     printf("\n\n");
     exit(-1);
diff --git a/usefull_macros.h b/usefull_macros.h
index 15c578a..3a5ecd8 100644
--- a/usefull_macros.h
+++ b/usefull_macros.h
@@ -326,6 +326,7 @@ typedef struct{
 extern const char *__progname;
 
 void sl_showhelp(int oindex, sl_option_t *options);
+void sl_parseargs_hf(int *argc, char ***argv, sl_option_t *options, void (*helpfun)(int, sl_option_t*));
 void sl_parseargs(int *argc, char ***argv, sl_option_t *options);
 /**
  * @brief sl_helpstring - change standard help header
@@ -374,16 +375,18 @@ void *sl_list_pop(sl_list_t **lst);
 #define SL_COMMENT_CHAR '#'
 
 // option or simple configuration value (don't work for functions)
-typedef struct{
+/*typedef struct{
     union{
         int ival; long long llval; double dval; float fval;
     };
     sl_argtype_e type;
-} sl_optval;
+} sl_optval;*/
 
 int sl_get_keyval(const char *pair, char key[SL_KEY_LEN], char value[SL_VAL_LEN]);
 char *sl_print_opts(sl_option_t *opt, int showall);
 int sl_conf_readopts(const char *filename, sl_option_t *options);
+void sl_conf_showhelp(int idx, sl_option_t *options);
+int sl_remove_quotes(char *string);
 
 /******************************************************************************\
                          The original ringbuffer.h