src/paragraph_pimpl.C

   1 /**
   2  * \file paragraph_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Jean-Marc Lasgouttes
   8  * \author John Levon
   9  * \author André Pönitz
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "paragraph_pimpl.h"
  17
  18 #include "bufferparams.h"
  19 #include "debug.h"
  20 #include "encoding.h"
  21 #include "language.h"
  22 #include "LaTeXFeatures.h"
  23 #include "LColor.h"
  24 #include "lyxlength.h"
  25 #include "lyxrc.h"
  26 #include "outputparams.h"
  27 #include "texrow.h"
  28
  29
  30 using lyx::pos_type;
  31
  32 using std::endl;
  33 using std::upper_bound;
  34 using std::lower_bound;
  35 using std::string;
  36 using std::ostream;
  37
  38
  39 // Initialize static member.
  40 ShareContainer<LyXFont> Paragraph::Pimpl::FontTable::container;
  41 // Initialization of the counter for the paragraph id's,
  42 unsigned int Paragraph::Pimpl::paragraph_id = 0;
  43
  44 namespace {
  45
  46 struct special_phrase {
  47         string phrase;
  48         string macro;
  49         bool builtin;
  50 };
  51
  52 special_phrase special_phrases[] = {
  53         { "LyX", "\\LyX{}", false },
  54         { "TeX", "\\TeX{}", true },
  55         { "LaTeX2e", "\\LaTeXe{}", true },
  56         { "LaTeX", "\\LaTeX{}", true },
  57 };
  58
  59 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
  60
  61 } // namespace anon
  62
  63
  64 Paragraph::Pimpl::Pimpl(Paragraph * owner)
  65         : owner_(owner)
  66 {
  67         inset_owner = 0;
  68         id_ = paragraph_id++;
  69 }
  70
  71
  72 Paragraph::Pimpl::Pimpl(Pimpl const & p, Paragraph * owner)
  73         : params(p.params), owner_(owner)
  74 {
  75         inset_owner = p.inset_owner;
  76         fontlist = p.fontlist;
  77         id_ = paragraph_id++;
  78
  79         if (p.tracking())
  80                 changes_.reset(new Changes(*p.changes_.get()));
  81 }
  82
  83
  84 void Paragraph::Pimpl::setContentsFromPar(Paragraph const & par)
  85 {
  86         owner_->text_ = par.text_;
  87         if (par.pimpl_->tracking()) {
  88                 changes_.reset(new Changes(*(par.pimpl_->changes_.get())));
  89         }
  90 }
  91
  92
  93 void Paragraph::Pimpl::trackChanges(Change::Type type)
  94 {
  95         if (tracking()) {
  96                 lyxerr[Debug::CHANGES] << "already tracking for par " << id_ << endl;
  97                 return;
  98         }
  99
 100         lyxerr[Debug::CHANGES] << "track changes for par "
 101                 << id_ << " type " << type << endl;
 102         changes_.reset(new Changes(type));
 103         changes_->set(type, 0, size());
 104 }
 105
 106
 107 void Paragraph::Pimpl::untrackChanges()
 108 {
 109         changes_.reset(0);
 110 }
 111
 112
 113 void Paragraph::Pimpl::cleanChanges()
 114 {
 115         // if we're not tracking, we don't want to reset...
 116         if (!tracking())
 117                 return;
 118
 119         changes_.reset(new Changes(Change::INSERTED));
 120         changes_->set(Change::INSERTED, 0, size());
 121 }
 122
 123
 124 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
 125 {
 126         if (!tracking())
 127                 return false;
 128
 129         return changes_->isChange(start, end);
 130 }
 131
 132
 133 bool Paragraph::Pimpl::isChangeEdited(pos_type start, pos_type end) const
 134 {
 135         if (!tracking())
 136                 return false;
 137
 138         return changes_->isChangeEdited(start, end);
 139 }
 140
 141
 142 void Paragraph::Pimpl::setChange(pos_type pos, Change::Type type)
 143 {
 144         if (!tracking())
 145                 return;
 146
 147         changes_->set(type, pos);
 148 }
 149
 150
 151 Change::Type Paragraph::Pimpl::lookupChange(pos_type pos) const
 152 {
 153         if (!tracking())
 154                 return Change::UNCHANGED;
 155
 156         return changes_->lookup(pos);
 157 }
 158
 159
 160 Change const Paragraph::Pimpl::lookupChangeFull(pos_type pos) const
 161 {
 162         if (!tracking())
 163                 return Change(Change::UNCHANGED);
 164
 165         return changes_->lookupFull(pos);
 166 }
 167
 168
 169 void Paragraph::Pimpl::markErased()
 170 {
 171         BOOST_ASSERT(tracking());
 172
 173         // FIXME: we should actually remove INSERTED chars.
 174         // difficult because owning insettexts/tabulars need
 175         // to update themselves when rows etc. change
 176         changes_->set(Change::DELETED, 0, size());
 177         changes_->reset(Change::DELETED);
 178 }
 179
 180
 181 void Paragraph::Pimpl::acceptChange(pos_type start, pos_type end)
 182 {
 183         if (!tracking())
 184                 return;
 185
 186         if (!size()) {
 187                 changes_.reset(new Changes(Change::UNCHANGED));
 188                 return;
 189         }
 190
 191         lyxerr << "acceptchange" << endl;
 192         pos_type i = start;
 193
 194         for (; i < end; ++i) {
 195                 switch (lookupChange(i)) {
 196                         case Change::UNCHANGED:
 197                                 break;
 198
 199                         case Change::INSERTED:
 200                                 changes_->set(Change::UNCHANGED, i);
 201                                 break;
 202
 203                         case Change::DELETED:
 204                                 eraseIntern(i);
 205                                 changes_->erase(i);
 206                                 --end;
 207                                 --i;
 208                                 break;
 209                 }
 210         }
 211
 212         lyxerr << "endacceptchange" << endl;
 213         changes_->reset(Change::UNCHANGED);
 214 }
 215
 216
 217 void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
 218 {
 219         if (!tracking())
 220                 return;
 221
 222         if (!size()) {
 223                 changes_.reset(new Changes(Change::UNCHANGED));
 224                 return;
 225         }
 226
 227         pos_type i = start;
 228
 229         for (; i < end; ++i) {
 230                 switch (lookupChange(i)) {
 231                         case Change::UNCHANGED:
 232                                 break;
 233
 234                         case Change::INSERTED:
 235                                 eraseIntern(i);
 236                                 changes_->erase(i);
 237                                 --end;
 238                                 --i;
 239                                 break;
 240
 241                         case Change::DELETED:
 242                                 changes_->set(Change::UNCHANGED, i);
 243                                 break;
 244                 }
 245         }
 246         changes_->reset(Change::UNCHANGED);
 247 }
 248
 249
 250 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 251 {
 252         return owner_->getChar(pos);
 253 }
 254
 255
 256 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c,
 257                                   LyXFont const & font, Change change)
 258 {
 259         BOOST_ASSERT(pos <= size());
 260
 261         if (tracking()) {
 262                 changes_->record(change, pos);
 263         }
 264
 265         // This is actually very common when parsing buffers (and
 266         // maybe inserting ascii text)
 267         if (pos == size()) {
 268                 // when appending characters, no need to update tables
 269                 owner_->text_.push_back(c);
 270                 owner_->setFont(pos, font);
 271                 return;
 272         }
 273
 274         owner_->text_.insert(owner_->text_.begin() + pos, c);
 275
 276         // Update the font table.
 277         FontTable search_font(pos, LyXFont());
 278         for (FontList::iterator it = lower_bound(fontlist.begin(),
 279                                                       fontlist.end(),
 280                                                       search_font, matchFT());
 281              it != fontlist.end(); ++it)
 282         {
 283                 it->pos(it->pos() + 1);
 284         }
 285
 286         // Update the insets
 287         owner_->insetlist.increasePosAfterPos(pos);
 288
 289         owner_->setFont(pos, font);
 290 }
 291
 292
 293 void Paragraph::Pimpl::insertInset(pos_type pos,
 294                                    InsetBase * inset, LyXFont const & font, Change change)
 295 {
 296         BOOST_ASSERT(inset);
 297         BOOST_ASSERT(pos <= size());
 298
 299         insertChar(pos, META_INSET, font, change);
 300         BOOST_ASSERT(owner_->text_[pos] == META_INSET);
 301
 302         // Add a new entry in the insetlist.
 303         owner_->insetlist.insert(inset, pos);
 304
 305         if (inset_owner)
 306                 inset->setOwner(inset_owner);
 307 }
 308
 309
 310 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 311 {
 312         // if it is an inset, delete the inset entry
 313         if (owner_->text_[pos] == Paragraph::META_INSET) {
 314                 owner_->insetlist.erase(pos);
 315         }
 316
 317         owner_->text_.erase(owner_->text_.begin() + pos);
 318
 319         // Erase entries in the tables.
 320         FontTable search_font(pos, LyXFont());
 321
 322         FontList::iterator it =
 323                 lower_bound(fontlist.begin(),
 324                             fontlist.end(),
 325                             search_font, matchFT());
 326         if (it != fontlist.end() && it->pos() == pos &&
 327             (pos == 0 ||
 328              (it != fontlist.begin()
 329               && boost::prior(it)->pos() == pos - 1))) {
 330                 // If it is a multi-character font
 331                 // entry, we just make it smaller
 332                 // (see update below), otherwise we
 333                 // should delete it.
 334                 unsigned int const i = it - fontlist.begin();
 335                 fontlist.erase(fontlist.begin() + i);
 336                 it = fontlist.begin() + i;
 337                 if (i > 0 && i < fontlist.size() &&
 338                     fontlist[i - 1].font() == fontlist[i].font()) {
 339                         fontlist.erase(fontlist.begin() + i - 1);
 340                         it = fontlist.begin() + i - 1;
 341                 }
 342         }
 343
 344         // Update all other entries.
 345         FontList::iterator fend = fontlist.end();
 346         for (; it != fend; ++it)
 347                 it->pos(it->pos() - 1);
 348
 349         // Update the insetlist.
 350         owner_->insetlist.decreasePosAfterPos(pos);
 351 }
 352
 353
 354 bool Paragraph::Pimpl::erase(pos_type pos)
 355 {
 356         BOOST_ASSERT(pos < size());
 357
 358         if (tracking()) {
 359                 Change::Type changetype(changes_->lookup(pos));
 360                 changes_->record(Change(Change::DELETED), pos);
 361
 362                 // only allow the actual removal if it was /new/ text
 363                 if (changetype != Change::INSERTED) {
 364                         if (owner_->text_[pos] == Paragraph::META_INSET) {
 365                                 owner_->getInset(pos)->markErased();
 366                         }
 367                         return false;
 368                 }
 369         }
 370
 371         eraseIntern(pos);
 372         return true;
 373 }
 374
 375
 376 int Paragraph::Pimpl::erase(pos_type start, pos_type end)
 377 {
 378         pos_type i = start;
 379         for (pos_type count = end - start; count; --count) {
 380                 if (!erase(i))
 381                         ++i;
 382         }
 383         return end - i;
 384 }
 385
 386
 387 void Paragraph::Pimpl::simpleTeXBlanks(ostream & os, TexRow & texrow,
 388                                        pos_type const i,
 389                                        unsigned int & column,
 390                                        LyXFont const & font,
 391                                        LyXLayout const & style)
 392 {
 393         if (style.pass_thru)
 394                 return;
 395
 396         if (column > lyxrc.ascii_linelen
 397             && i
 398             && getChar(i - 1) != ' '
 399             && (i < size() - 1)
 400             // same in FreeSpacing mode
 401             && !owner_->isFreeSpacing()
 402             // In typewriter mode, we want to avoid
 403             // ! . ? : at the end of a line
 404             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 405                  && (getChar(i - 1) == '.'
 406                      || getChar(i - 1) == '?'
 407                      || getChar(i - 1) == ':'
 408                      || getChar(i - 1) == '!'))) {
 409                 os << '\n';
 410                 texrow.newline();
 411                 texrow.start(owner_->id(), i + 1);
 412                 column = 0;
 413         } else if (style.free_spacing) {
 414                 os << '~';
 415         } else {
 416                 os << ' ';
 417         }
 418 }
 419
 420
 421 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 422 {
 423         pos_type const len = str.length();
 424
 425         // is the paragraph large enough?
 426         if (pos + len > size())
 427                 return false;
 428
 429         // does the wanted text start at point?
 430         for (string::size_type i = 0; i < str.length(); ++i) {
 431                 if (str[i] != owner_->text_[pos + i])
 432                         return false;
 433         }
 434
 435         // is there a font change in middle of the word?
 436         FontList::const_iterator cit = fontlist.begin();
 437         FontList::const_iterator end = fontlist.end();
 438         for (; cit != end; ++cit) {
 439                 if (cit->pos() >= pos)
 440                         break;
 441         }
 442         if (cit != end && pos + len - 1 > cit->pos())
 443                 return false;
 444
 445         return true;
 446 }
 447
 448
 449 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const & buf,
 450                                              BufferParams const & bparams,
 451                                              ostream & os,
 452                                              TexRow & texrow,
 453                                              OutputParams const & runparams,
 454                                              LyXFont & font,
 455                                              LyXFont & running_font,
 456                                              LyXFont & basefont,
 457                                              LyXFont const & outerfont,
 458                                              bool & open_font,
 459                                              Change::Type & running_change,
 460                                              LyXLayout const & style,
 461                                              pos_type & i,
 462                                              unsigned int & column,
 463                                              value_type const c)
 464 {
 465         if (style.pass_thru) {
 466                 if (c != Paragraph::META_INSET) {
 467                         if (c != '\0')
 468                                 os << c;
 469                 } else {
 470                         owner_->getInset(i)->plaintext(buf, os, runparams);
 471                 }
 472                 return;
 473         }
 474
 475         // Two major modes:  LaTeX or plain
 476         // Handle here those cases common to both modes
 477         // and then split to handle the two modes separately.
 478         switch (c) {
 479         case Paragraph::META_INSET: {
 480                 InsetBase * inset = owner_->getInset(i);
 481
 482                 // FIXME: remove this check
 483                 if (!inset)
 484                         break;
 485
 486                 // FIXME: move this to InsetNewline::latex
 487                 if (inset->lyxCode() == InsetBase::NEWLINE_CODE) {
 488                         // newlines are handled differently here than
 489                         // the default in simpleTeXSpecialChars().
 490                         if (!style.newline_allowed) {
 491                                 os << '\n';
 492                         } else {
 493                                 if (open_font) {
 494                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 495                                         open_font = false;
 496                                 }
 497                                 basefont = owner_->getLayoutFont(bparams, outerfont);
 498                                 running_font = basefont;
 499
 500                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 501                                         os << '~';
 502
 503                                 if (runparams.moving_arg)
 504                                         os << "\\protect ";
 505
 506                                 os << "\\\\\n";
 507                         }
 508                         texrow.newline();
 509                         texrow.start(owner_->id(), i + 1);
 510                         column = 0;
 511                         break;
 512                 }
 513
 514                 if (inset->isTextInset()) {
 515                         column += Changes::latexMarkChange(os, running_change,
 516                                 Change::UNCHANGED);
 517                         running_change = Change::UNCHANGED;
 518                 }
 519
 520                 bool close = false;
 521                 ostream::pos_type const len = os.tellp();
 522
 523                 if ((inset->lyxCode() == InsetBase::GRAPHICS_CODE
 524                      || inset->lyxCode() == InsetBase::MATH_CODE
 525                      || inset->lyxCode() == InsetBase::URL_CODE)
 526                     && running_font.isRightToLeft()) {
 527                         os << "\\L{";
 528                         close = true;
 529                 }
 530
 531 #ifdef WITH_WARNINGS
 532 #warning Bug: we can have an empty font change here!
 533 // if there has just been a font change, we are going to close it
 534 // right now, which means stupid latex code like \textsf{}. AFAIK,
 535 // this does not harm dvi output. A minor bug, thus (JMarc)
 536 #endif
 537                 // some insets cannot be inside a font change command
 538                 if (open_font && inset->noFontChange()) {
 539                         column +=running_font.
 540                                 latexWriteEndChanges(os,
 541                                                      basefont,
 542                                                      basefont);
 543                         open_font = false;
 544                         basefont = owner_->getLayoutFont(bparams, outerfont);
 545                         running_font = basefont;
 546                 }
 547
 548                 int tmp = inset->latex(buf, os, runparams);
 549
 550                 if (close)
 551                         os << '}';
 552
 553                 if (tmp) {
 554                         for (int j = 0; j < tmp; ++j) {
 555                                 texrow.newline();
 556                         }
 557                         texrow.start(owner_->id(), i + 1);
 558                         column = 0;
 559                 } else {
 560                         column += os.tellp() - len;
 561                 }
 562         }
 563         break;
 564
 565         default:
 566                 // And now for the special cases within each mode
 567
 568                 switch (c) {
 569                 case '\\':
 570                         os << "\\textbackslash{}";
 571                         column += 15;
 572                         break;
 573
 574                 case '±': case '²': case '³':
 575                 case '×': case '÷': case '¹':
 576                 case '¬': case 'µ':
 577                         if ((bparams.inputenc == "latin1" ||
 578                              bparams.inputenc == "latin9") ||
 579                             (bparams.inputenc == "auto" &&
 580                              (font.language()->encoding()->LatexName()
 581                               == "latin1" ||
 582                               font.language()->encoding()->LatexName()
 583                               == "latin9"))) {
 584                                 os << "\\ensuremath{"
 585                                    << c
 586                                    << '}';
 587                                 column += 13;
 588                         } else {
 589                                 os << c;
 590                         }
 591                         break;
 592
 593                 case '|': case '<': case '>':
 594                         // In T1 encoding, these characters exist
 595                         if (lyxrc.fontenc == "T1") {
 596                                 os << c;
 597                                 //... but we should avoid ligatures
 598                                 if ((c == '>' || c == '<')
 599                                     && i <= size() - 2
 600                                     && getChar(i + 1) == c) {
 601                                         //os << "\\textcompwordmark{}";
 602                                         // Jean-Marc, have a look at
 603                                         // this. I think this works
 604                                         // equally well:
 605                                         os << "\\,{}";
 606                                         // Lgb
 607                                         column += 19;
 608                                 }
 609                                 break;
 610                         }
 611                         // Typewriter font also has them
 612                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 613                                 os << c;
 614                                 break;
 615                         }
 616                         // Otherwise, we use what LaTeX
 617                         // provides us.
 618                         switch (c) {
 619                         case '<':
 620                                 os << "\\textless{}";
 621                                 column += 10;
 622                                 break;
 623                         case '>':
 624                                 os << "\\textgreater{}";
 625                                 column += 13;
 626                                 break;
 627                         case '|':
 628                                 os << "\\textbar{}";
 629                                 column += 9;
 630                                 break;
 631                         }
 632                         break;
 633
 634                 case '-': // "--" in Typewriter mode -> "-{}-"
 635                         if (i <= size() - 2
 636                             && getChar(i + 1) == '-'
 637                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 638                                 os << "-{}";
 639                                 column += 2;
 640                         } else {
 641                                 os << '-';
 642                         }
 643                         break;
 644
 645                 case '\"':
 646                         os << "\\char`\\\"{}";
 647                         column += 9;
 648                         break;
 649
 650                 case '£':
 651                         if (bparams.inputenc == "default") {
 652                                 os << "\\pounds{}";
 653                                 column += 8;
 654                         } else {
 655                                 os << c;
 656                         }
 657                         break;
 658
 659                 case '$': case '&':
 660                 case '%': case '#': case '{':
 661                 case '}': case '_':
 662                         os << '\\' << c;
 663                         column += 1;
 664                         break;
 665
 666                 case '~':
 667                         os << "\\textasciitilde{}";
 668                         column += 16;
 669                         break;
 670
 671                 case '^':
 672                         os << "\\textasciicircum{}";
 673                         column += 17;
 674                         break;
 675
 676                 case '*': case '[': case ']':
 677                         // avoid being mistaken for optional arguments
 678                         os << '{' << c << '}';
 679                         column += 2;
 680                         break;
 681
 682                 case ' ':
 683                         // Blanks are printed before font switching.
 684                         // Sure? I am not! (try nice-latex)
 685                         // I am sure it's correct. LyX might be smarter
 686                         // in the future, but for now, nothing wrong is
 687                         // written. (Asger)
 688                         break;
 689
 690                 default:
 691
 692                         // I assume this is hack treating typewriter as verbatim
 693                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 694                                 if (c != '\0') {
 695                                         os << c;
 696                                 }
 697                                 break;
 698                         }
 699
 700                         // LyX, LaTeX etc.
 701
 702                         // FIXME: if we have "LaTeX" with a font
 703                         // change in the middle (before the 'T', then
 704                         // the "TeX" part is still special cased.
 705                         // Really we should only operate this on
 706                         // "words" for some definition of word
 707
 708                         size_t pnr = 0;
 709
 710                         for (; pnr < phrases_nr; ++pnr) {
 711                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 712                                         os << special_phrases[pnr].macro;
 713                                         i += special_phrases[pnr].phrase.length() - 1;
 714                                         column += special_phrases[pnr].macro.length() - 1;
 715                                         break;
 716                                 }
 717                         }
 718
 719                         if (pnr == phrases_nr && c != '\0') {
 720                                 os << c;
 721                         }
 722                         break;
 723                 }
 724         }
 725 }
 726
 727
 728 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 729                                 LyXLayout const & layout) const
 730 {
 731         BufferParams const & bparams = features.bufferParams();
 732
 733         // check the params.
 734         if (!params.spacing().isDefault())
 735                 features.require("setspace");
 736
 737         // then the layouts
 738         features.useLayout(layout.name());
 739
 740         // then the fonts
 741         Language const * doc_language = bparams.language;
 742
 743         FontList::const_iterator fcit = fontlist.begin();
 744         FontList::const_iterator fend = fontlist.end();
 745         for (; fcit != fend; ++fcit) {
 746                 if (fcit->font().noun() == LyXFont::ON) {
 747                         lyxerr[Debug::LATEX] << "font.noun: "
 748                                              << fcit->font().noun()
 749                                              << endl;
 750                         features.require("noun");
 751                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 752                                              << fcit->font().stateText(0)
 753                                              << endl;
 754                 }
 755                 switch (fcit->font().color()) {
 756                 case LColor::none:
 757                 case LColor::inherit:
 758                 case LColor::ignore:
 759                         // probably we should put here all interface colors used for
 760                         // font displaying! For now I just add this ones I know of (Jug)
 761                 case LColor::latex:
 762                 case LColor::note:
 763                         break;
 764                 default:
 765                         features.require("color");
 766                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 767                                              << fcit->font().stateText(0)
 768                                              << endl;
 769                 }
 770
 771                 Language const * language = fcit->font().language();
 772                 if (language->babel() != doc_language->babel() &&
 773                     language != ignore_language &&
 774                     language != latex_language)
 775                 {
 776                         features.useLanguage(language);
 777                         lyxerr[Debug::LATEX] << "Found language "
 778                                              << language->babel() << endl;
 779                 }
 780         }
 781
 782         if (!params.leftIndent().zero())
 783                 features.require("ParagraphLeftIndent");
 784
 785         // then the insets
 786         InsetList::iterator icit = owner_->insetlist.begin();
 787         InsetList::iterator iend = owner_->insetlist.end();
 788         for (; icit != iend; ++icit) {
 789                 if (icit->inset) {
 790                         icit->inset->validate(features);
 791                         if (layout.needprotect &&
 792                             icit->inset->lyxCode() == InsetBase::FOOT_CODE)
 793                                 features.require("NeedLyXFootnoteCode");
 794                 }
 795         }
 796
 797         // then the contents
 798         for (pos_type i = 0; i < size() ; ++i) {
 799                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 800                         if (!special_phrases[pnr].builtin
 801                             && isTextAt(special_phrases[pnr].phrase, i)) {
 802                                 features.require(special_phrases[pnr].phrase);
 803                                 break;
 804                         }
 805                 }
 806         }
 807 }