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