scripts/config/menu.c

   1 /*
   2  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
   3  * Released under the terms of the GNU GPL v2.0.
   4  */
   5
   6 #include <ctype.h>
   7 #include <stdarg.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10
  11 #include "lkc.h"
  12
  13 static const char nohelp_text[] = "There is no help available for this option.";
  14
  15 struct menu rootmenu;
  16 static struct menu **last_entry_ptr;
  17
  18 struct file *file_list;
  19 struct file *current_file;
  20
  21 void menu_warn(struct menu *menu, const char *fmt, ...)
  22 {
  23         va_list ap;
  24         va_start(ap, fmt);
  25         fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
  26         vfprintf(stderr, fmt, ap);
  27         fprintf(stderr, "\n");
  28         va_end(ap);
  29 }
  30
  31 static void prop_warn(struct property *prop, const char *fmt, ...)
  32 {
  33         va_list ap;
  34         va_start(ap, fmt);
  35         fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
  36         vfprintf(stderr, fmt, ap);
  37         fprintf(stderr, "\n");
  38         va_end(ap);
  39 }
  40
  41 void _menu_init(void)
  42 {
  43         current_entry = current_menu = &rootmenu;
  44         last_entry_ptr = &rootmenu.list;
  45 }
  46
  47 void menu_add_entry(struct symbol *sym)
  48 {
  49         struct menu *menu;
  50
  51         menu = xmalloc(sizeof(*menu));
  52         memset(menu, 0, sizeof(*menu));
  53         menu->sym = sym;
  54         menu->parent = current_menu;
  55         menu->file = current_file;
  56         menu->lineno = zconf_lineno();
  57
  58         *last_entry_ptr = menu;
  59         last_entry_ptr = &menu->next;
  60         current_entry = menu;
  61         if (sym)
  62                 menu_add_symbol(P_SYMBOL, sym, NULL);
  63 }
  64
  65 void menu_end_entry(void)
  66 {
  67 }
  68
  69 struct menu *menu_add_menu(void)
  70 {
  71         menu_end_entry();
  72         last_entry_ptr = &current_entry->list;
  73         return current_menu = current_entry;
  74 }
  75
  76 void menu_end_menu(void)
  77 {
  78         last_entry_ptr = &current_menu->next;
  79         current_menu = current_menu->parent;
  80 }
  81
  82 static struct expr *menu_check_dep(struct expr *e)
  83 {
  84         if (!e)
  85                 return e;
  86
  87         switch (e->type) {
  88         case E_NOT:
  89                 e->left.expr = menu_check_dep(e->left.expr);
  90                 break;
  91         case E_OR:
  92         case E_AND:
  93                 e->left.expr = menu_check_dep(e->left.expr);
  94                 e->right.expr = menu_check_dep(e->right.expr);
  95                 break;
  96         case E_SYMBOL:
  97                 /* change 'm' into 'm' && MODULES */
  98                 if (e->left.sym == &symbol_mod)
  99                         return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
 100                 break;
 101         default:
 102                 break;
 103         }
 104         return e;
 105 }
 106
 107 void menu_add_dep(struct expr *dep)
 108 {
 109         current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
 110 }
 111
 112 void menu_set_type(int type)
 113 {
 114         struct symbol *sym = current_entry->sym;
 115
 116         if (sym->type == type)
 117                 return;
 118         if (sym->type == S_UNKNOWN) {
 119                 sym->type = type;
 120                 return;
 121         }
 122         menu_warn(current_entry,
 123                 "ignoring type redefinition of '%s' from '%s' to '%s'",
 124                 sym->name ? sym->name : "<choice>",
 125                 sym_type_name(sym->type), sym_type_name(type));
 126 }
 127
 128 struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
 129 {
 130         struct property *prop = prop_alloc(type, current_entry->sym);
 131
 132         prop->menu = current_entry;
 133         prop->expr = expr;
 134         prop->visible.expr = menu_check_dep(dep);
 135
 136         if (prompt) {
 137                 if (isspace(*prompt)) {
 138                         prop_warn(prop, "leading whitespace ignored");
 139                         while (isspace(*prompt))
 140                                 prompt++;
 141                 }
 142                 if (current_entry->prompt && current_entry != &rootmenu)
 143                         prop_warn(prop, "prompt redefined");
 144
 145                 /* Apply all upper menus' visibilities to actual prompts. */
 146                 if(type == P_PROMPT) {
 147                         struct menu *menu = current_entry;
 148
 149                         while ((menu = menu->parent) != NULL) {
 150                                 struct expr *dup_expr;
 151
 152                                 if (!menu->visibility)
 153                                         continue;
 154                                 /*
 155                                  * Do not add a reference to the
 156                                  * menu's visibility expression but
 157                                  * use a copy of it.  Otherwise the
 158                                  * expression reduction functions
 159                                  * will modify expressions that have
 160                                  * multiple references which can
 161                                  * cause unwanted side effects.
 162                                  */
 163                                 dup_expr = expr_copy(menu->visibility);
 164
 165                                 prop->visible.expr
 166                                         = expr_alloc_and(prop->visible.expr,
 167                                                          dup_expr);
 168                         }
 169                 }
 170
 171                 current_entry->prompt = prop;
 172         }
 173         prop->text = prompt;
 174
 175         return prop;
 176 }
 177
 178 struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
 179 {
 180         return menu_add_prop(type, prompt, NULL, dep);
 181 }
 182
 183 void menu_add_visibility(struct expr *expr)
 184 {
 185         current_entry->visibility = expr_alloc_and(current_entry->visibility,
 186             expr);
 187 }
 188
 189 void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
 190 {
 191         menu_add_prop(type, NULL, expr, dep);
 192 }
 193
 194 void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
 195 {
 196         menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
 197 }
 198
 199 void menu_add_option(int token, char *arg)
 200 {
 201         switch (token) {
 202         case T_OPT_MODULES:
 203                 if (modules_sym)
 204                         zconf_error("symbol '%s' redefines option 'modules'"
 205                                     " already defined by symbol '%s'",
 206                                     current_entry->sym->name,
 207                                     modules_sym->name
 208                                     );
 209                 modules_sym = current_entry->sym;
 210                 break;
 211         case T_OPT_DEFCONFIG_LIST:
 212                 if (!sym_defconfig_list)
 213                         sym_defconfig_list = current_entry->sym;
 214                 else if (sym_defconfig_list != current_entry->sym)
 215                         zconf_error("trying to redefine defconfig symbol");
 216                 break;
 217         case T_OPT_ENV:
 218                 prop_add_env(arg);
 219                 break;
 220         case T_OPT_ALLNOCONFIG_Y:
 221                 current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
 222                 break;
 223         }
 224 }
 225
 226 static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
 227 {
 228         return sym2->type == S_INT || sym2->type == S_HEX ||
 229                (sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
 230 }
 231
 232 static void sym_check_prop(struct symbol *sym)
 233 {
 234         struct property *prop;
 235         struct symbol *sym2;
 236         for (prop = sym->prop; prop; prop = prop->next) {
 237                 switch (prop->type) {
 238                 case P_DEFAULT:
 239                         if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
 240                             prop->expr->type != E_SYMBOL)
 241                                 prop_warn(prop,
 242                                     "default for config symbol '%s'"
 243                                     " must be a single symbol", sym->name);
 244                         if (prop->expr->type != E_SYMBOL)
 245                                 break;
 246                         sym2 = prop_get_symbol(prop);
 247                         if (sym->type == S_HEX || sym->type == S_INT) {
 248                                 if (!menu_validate_number(sym, sym2))
 249                                         prop_warn(prop,
 250                                             "'%s': number is invalid",
 251                                             sym->name);
 252                         }
 253                         break;
 254                 case P_SELECT:
 255                         sym2 = prop_get_symbol(prop);
 256                         if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
 257                                 prop_warn(prop,
 258                                     "config symbol '%s' uses select, but is "
 259                                     "not boolean or tristate", sym->name);
 260                         else if (sym2->type != S_UNKNOWN &&
 261                                  sym2->type != S_BOOLEAN &&
 262                                  sym2->type != S_TRISTATE)
 263                                 prop_warn(prop,
 264                                     "'%s' has wrong type. 'select' only "
 265                                     "accept arguments of boolean and "
 266                                     "tristate type", sym2->name);
 267                         break;
 268                 case P_RANGE:
 269                         if (sym->type != S_INT && sym->type != S_HEX)
 270                                 prop_warn(prop, "range is only allowed "
 271                                                 "for int or hex symbols");
 272                         if (!menu_validate_number(sym, prop->expr->left.sym) ||
 273                             !menu_validate_number(sym, prop->expr->right.sym))
 274                                 prop_warn(prop, "range is invalid");
 275                         break;
 276                 default:
 277                         ;
 278                 }
 279         }
 280 }
 281
 282 void menu_finalize(struct menu *parent)
 283 {
 284         struct menu *menu, *last_menu;
 285         struct symbol *sym;
 286         struct property *prop;
 287         struct expr *parentdep, *basedep, *dep, *dep2, **ep;
 288
 289         sym = parent->sym;
 290         if (parent->list) {
 291                 if (sym && sym_is_choice(sym)) {
 292                         if (sym->type == S_UNKNOWN) {
 293                                 /* find the first choice value to find out choice type */
 294                                 current_entry = parent;
 295                                 for (menu = parent->list; menu; menu = menu->next) {
 296                                         if (menu->sym && menu->sym->type != S_UNKNOWN) {
 297                                                 menu_set_type(menu->sym->type);
 298                                                 break;
 299                                         }
 300                                 }
 301                         }
 302                         /* set the type of the remaining choice values */
 303                         for (menu = parent->list; menu; menu = menu->next) {
 304                                 current_entry = menu;
 305                                 if (menu->sym && menu->sym->type == S_UNKNOWN)
 306                                         menu_set_type(sym->type);
 307                         }
 308                         parentdep = expr_alloc_symbol(sym);
 309                 } else if (parent->prompt)
 310                         parentdep = parent->prompt->visible.expr;
 311                 else
 312                         parentdep = parent->dep;
 313
 314                 for (menu = parent->list; menu; menu = menu->next) {
 315                         basedep = expr_transform(menu->dep);
 316                         basedep = expr_alloc_and(expr_copy(parentdep), basedep);
 317                         basedep = expr_eliminate_dups(basedep);
 318                         menu->dep = basedep;
 319                         if (menu->sym)
 320                                 prop = menu->sym->prop;
 321                         else
 322                                 prop = menu->prompt;
 323                         for (; prop; prop = prop->next) {
 324                                 if (prop->menu != menu)
 325                                         continue;
 326                                 dep = expr_transform(prop->visible.expr);
 327                                 dep = expr_alloc_and(expr_copy(basedep), dep);
 328                                 dep = expr_eliminate_dups(dep);
 329                                 if (menu->sym && menu->sym->type != S_TRISTATE)
 330                                         dep = expr_trans_bool(dep);
 331                                 prop->visible.expr = dep;
 332                                 if (prop->type == P_SELECT) {
 333                                         struct symbol *es = prop_get_symbol(prop);
 334                                         es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
 335                                                         expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
 336                                 }
 337                         }
 338                 }
 339                 for (menu = parent->list; menu; menu = menu->next)
 340                         menu_finalize(menu);
 341         } else if (sym) {
 342                 basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
 343                 basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
 344                 basedep = expr_eliminate_dups(expr_transform(basedep));
 345                 last_menu = NULL;
 346                 for (menu = parent->next; menu; menu = menu->next) {
 347                         dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
 348                         if (!expr_contains_symbol(dep, sym))
 349                                 break;
 350                         if (expr_depends_symbol(dep, sym))
 351                                 goto next;
 352                         dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
 353                         dep = expr_eliminate_dups(expr_transform(dep));
 354                         dep2 = expr_copy(basedep);
 355                         expr_eliminate_eq(&dep, &dep2);
 356                         expr_free(dep);
 357                         if (!expr_is_yes(dep2)) {
 358                                 expr_free(dep2);
 359                                 break;
 360                         }
 361                         expr_free(dep2);
 362                 next:
 363                         menu_finalize(menu);
 364                         menu->parent = parent;
 365                         last_menu = menu;
 366                 }
 367                 if (last_menu) {
 368                         parent->list = parent->next;
 369                         parent->next = last_menu->next;
 370                         last_menu->next = NULL;
 371                 }
 372
 373                 sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
 374         }
 375         for (menu = parent->list; menu; menu = menu->next) {
 376                 if (sym && sym_is_choice(sym) &&
 377                     menu->sym && !sym_is_choice_value(menu->sym)) {
 378                         current_entry = menu;
 379                         menu->sym->flags |= SYMBOL_CHOICEVAL;
 380                         if (!menu->prompt)
 381                                 menu_warn(menu, "choice value must have a prompt");
 382                         for (prop = menu->sym->prop; prop; prop = prop->next) {
 383                                 if (prop->type == P_DEFAULT)
 384                                         prop_warn(prop, "defaults for choice "
 385                                                   "values not supported");
 386                                 if (prop->menu == menu)
 387                                         continue;
 388                                 if (prop->type == P_PROMPT &&
 389                                     prop->menu->parent->sym != sym)
 390                                         prop_warn(prop, "choice value used outside its choice group");
 391                         }
 392                         /* Non-tristate choice values of tristate choices must
 393                          * depend on the choice being set to Y. The choice
 394                          * values' dependencies were propagated to their
 395                          * properties above, so the change here must be re-
 396                          * propagated.
 397                          */
 398                         if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
 399                                 basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
 400                                 menu->dep = expr_alloc_and(basedep, menu->dep);
 401                                 for (prop = menu->sym->prop; prop; prop = prop->next) {
 402                                         if (prop->menu != menu)
 403                                                 continue;
 404                                         prop->visible.expr = expr_alloc_and(expr_copy(basedep),
 405                                                                             prop->visible.expr);
 406                                 }
 407                         }
 408                         menu_add_symbol(P_CHOICE, sym, NULL);
 409                         prop = sym_get_choice_prop(sym);
 410                         for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
 411                                 ;
 412                         *ep = expr_alloc_one(E_LIST, NULL);
 413                         (*ep)->right.sym = menu->sym;
 414                 }
 415                 if (menu->list && (!menu->prompt || !menu->prompt->text)) {
 416                         for (last_menu = menu->list; ; last_menu = last_menu->next) {
 417                                 last_menu->parent = parent;
 418                                 if (!last_menu->next)
 419                                         break;
 420                         }
 421                         last_menu->next = menu->next;
 422                         menu->next = menu->list;
 423                         menu->list = NULL;
 424                 }
 425         }
 426
 427         if (sym && !(sym->flags & SYMBOL_WARNED)) {
 428                 if (sym->type == S_UNKNOWN)
 429                         menu_warn(parent, "config symbol defined without type");
 430
 431                 if (sym_is_choice(sym) && !parent->prompt)
 432                         menu_warn(parent, "choice must have a prompt");
 433
 434                 /* Check properties connected to this symbol */
 435                 sym_check_prop(sym);
 436                 sym->flags |= SYMBOL_WARNED;
 437         }
 438
 439         if (sym && !sym_is_optional(sym) && parent->prompt) {
 440                 sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
 441                                 expr_alloc_and(parent->prompt->visible.expr,
 442                                         expr_alloc_symbol(&symbol_mod)));
 443         }
 444 }
 445
 446 bool menu_has_prompt(struct menu *menu)
 447 {
 448         if (!menu->prompt)
 449                 return false;
 450         return true;
 451 }
 452
 453 /*
 454  * Determine if a menu is empty.
 455  * A menu is considered empty if it contains no or only
 456  * invisible entries.
 457  */
 458 bool menu_is_empty(struct menu *menu)
 459 {
 460         struct menu *child;
 461
 462         for (child = menu->list; child; child = child->next) {
 463                 if (menu_is_visible(child))
 464                         return(false);
 465         }
 466         return(true);
 467 }
 468
 469 bool menu_is_visible(struct menu *menu)
 470 {
 471         struct menu *child;
 472         struct symbol *sym;
 473         tristate visible;
 474
 475         if (!menu->prompt)
 476                 return false;
 477
 478         if (menu->visibility) {
 479                 if (expr_calc_value(menu->visibility) == no)
 480                         return no;
 481         }
 482
 483         sym = menu->sym;
 484         if (sym) {
 485                 sym_calc_value(sym);
 486                 visible = menu->prompt->visible.tri;
 487         } else
 488                 visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
 489
 490         if (visible != no)
 491                 return true;
 492
 493         if (!sym || sym_get_tristate_value(menu->sym) == no)
 494                 return false;
 495
 496         for (child = menu->list; child; child = child->next) {
 497                 if (menu_is_visible(child)) {
 498                         if (sym)
 499                                 sym->flags |= SYMBOL_DEF_USER;
 500                         return true;
 501                 }
 502         }
 503
 504         return false;
 505 }
 506
 507 const char *menu_get_prompt(struct menu *menu)
 508 {
 509         if (menu->prompt)
 510                 return menu->prompt->text;
 511         else if (menu->sym)
 512                 return menu->sym->name;
 513         return NULL;
 514 }
 515
 516 struct menu *menu_get_root_menu(struct menu *menu)
 517 {
 518         return &rootmenu;
 519 }
 520
 521 struct menu *menu_get_parent_menu(struct menu *menu)
 522 {
 523         enum prop_type type;
 524
 525         for (; menu != &rootmenu; menu = menu->parent) {
 526                 type = menu->prompt ? menu->prompt->type : 0;
 527                 if (type == P_MENU)
 528                         break;
 529         }
 530         return menu;
 531 }
 532
 533 bool menu_has_help(struct menu *menu)
 534 {
 535         return menu->help != NULL;
 536 }
 537
 538 const char *menu_get_help(struct menu *menu)
 539 {
 540         if (menu->help)
 541                 return menu->help;
 542         else
 543                 return "";
 544 }
 545
 546 static void get_prompt_str(struct gstr *r, struct property *prop,
 547                            struct list_head *head)
 548 {
 549         int i, j;
 550         struct menu *submenu[8], *menu, *location = NULL;
 551         struct jump_key *jump = NULL;
 552
 553         str_printf(r, _("Prompt: %s\n"), _(prop->text));
 554         menu = prop->menu->parent;
 555         for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
 556                 bool accessible = menu_is_visible(menu);
 557
 558                 submenu[i++] = menu;
 559                 if (location == NULL && accessible)
 560                         location = menu;
 561         }
 562         if (head && location) {
 563                 jump = xmalloc(sizeof(struct jump_key));
 564
 565                 if (menu_is_visible(prop->menu)) {
 566                         /*
 567                          * There is not enough room to put the hint at the
 568                          * beginning of the "Prompt" line. Put the hint on the
 569                          * last "Location" line even when it would belong on
 570                          * the former.
 571                          */
 572                         jump->target = prop->menu;
 573                 } else
 574                         jump->target = location;
 575
 576                 if (list_empty(head))
 577                         jump->index = 0;
 578                 else
 579                         jump->index = list_entry(head->prev, struct jump_key,
 580                                                  entries)->index + 1;
 581
 582                 list_add_tail(&jump->entries, head);
 583         }
 584
 585         if (i > 0) {
 586                 str_printf(r, _("  Location:\n"));
 587                 for (j = 4; --i >= 0; j += 2) {
 588                         menu = submenu[i];
 589                         if (jump && menu == location)
 590                                 jump->offset = strlen(r->s);
 591                         str_printf(r, "%*c-> %s", j, ' ',
 592                                    _(menu_get_prompt(menu)));
 593                         if (menu->sym) {
 594                                 str_printf(r, " (%s [=%s])", menu->sym->name ?
 595                                         menu->sym->name : _("<choice>"),
 596                                         sym_get_string_value(menu->sym));
 597                         }
 598                         str_append(r, "\n");
 599                 }
 600         }
 601 }
 602
 603 /*
 604  * get property of type P_SYMBOL
 605  */
 606 static struct property *get_symbol_prop(struct symbol *sym)
 607 {
 608         struct property *prop = NULL;
 609
 610         for_all_properties(sym, prop, P_SYMBOL)
 611                 break;
 612         return prop;
 613 }
 614
 615 /*
 616  * head is optional and may be NULL
 617  */
 618 void get_symbol_str(struct gstr *r, struct symbol *sym,
 619                     struct list_head *head)
 620 {
 621         bool hit;
 622         struct property *prop;
 623
 624         if (sym && sym->name) {
 625                 str_printf(r, "Symbol: %s [=%s]\n", sym->name,
 626                            sym_get_string_value(sym));
 627                 str_printf(r, "Type  : %s\n", sym_type_name(sym->type));
 628                 if (sym->type == S_INT || sym->type == S_HEX) {
 629                         prop = sym_get_range_prop(sym);
 630                         if (prop) {
 631                                 str_printf(r, "Range : ");
 632                                 expr_gstr_print(prop->expr, r);
 633                                 str_append(r, "\n");
 634                         }
 635                 }
 636         }
 637         for_all_prompts(sym, prop)
 638                 get_prompt_str(r, prop, head);
 639
 640         prop = get_symbol_prop(sym);
 641         if (prop) {
 642                 str_printf(r, _("  Defined at %s:%d\n"), prop->menu->file->name,
 643                         prop->menu->lineno);
 644                 if (!expr_is_yes(prop->visible.expr)) {
 645                         str_append(r, _("  Depends on: "));
 646                         expr_gstr_print(prop->visible.expr, r);
 647                         str_append(r, "\n");
 648                 }
 649         }
 650
 651         hit = false;
 652         for_all_properties(sym, prop, P_SELECT) {
 653                 if (!hit) {
 654                         str_append(r, "  Selects: ");
 655                         hit = true;
 656                 } else
 657                         str_printf(r, " && ");
 658                 expr_gstr_print(prop->expr, r);
 659         }
 660         if (hit)
 661                 str_append(r, "\n");
 662         if (sym->rev_dep.expr) {
 663                 str_append(r, _("  Selected by: "));
 664                 expr_gstr_print(sym->rev_dep.expr, r);
 665                 str_append(r, "\n");
 666         }
 667         str_append(r, "\n\n");
 668 }
 669
 670 struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
 671 {
 672         struct symbol *sym;
 673         struct gstr res = str_new();
 674         int i;
 675
 676         for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
 677                 get_symbol_str(&res, sym, head);
 678         if (!i)
 679                 str_append(&res, _("No matches found.\n"));
 680         return res;
 681 }
 682
 683
 684 void menu_get_ext_help(struct menu *menu, struct gstr *help)
 685 {
 686         struct symbol *sym = menu->sym;
 687         const char *help_text = nohelp_text;
 688
 689         if (menu_has_help(menu)) {
 690                 if (sym->name)
 691                         str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
 692                 help_text = menu_get_help(menu);
 693         }
 694         str_printf(help, "%s\n", _(help_text));
 695         if (sym)
 696                 get_symbol_str(help, sym, NULL);
 697 }