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
 306
 307 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 308 {
 309         // if it is an inset, delete the inset entry
 310         if (owner_->text_[pos] == Paragraph::META_INSET) {
 311                 owner_->insetlist.erase(pos);
 312         }
 313
 314         owner_->text_.erase(owner_->text_.begin() + pos);
 315
 316         // Erase entries in the tables.
 317         FontTable search_font(pos, LyXFont());
 318
 319         FontList::iterator it =
 320                 lower_bound(fontlist.begin(),
 321                             fontlist.end(),
 322                             search_font, matchFT());
 323         if (it != fontlist.end() && it->pos() == pos &&
 324             (pos == 0 ||
 325              (it != fontlist.begin()
 326               && boost::prior(it)->pos() == pos - 1))) {
 327                 // If it is a multi-character font
 328                 // entry, we just make it smaller
 329                 // (see update below), otherwise we
 330                 // should delete it.
 331                 unsigned int const i = it - fontlist.begin();
 332                 fontlist.erase(fontlist.begin() + i);
 333                 it = fontlist.begin() + i;
 334                 if (i > 0 && i < fontlist.size() &&
 335                     fontlist[i - 1].font() == fontlist[i].font()) {
 336                         fontlist.erase(fontlist.begin() + i - 1);
 337                         it = fontlist.begin() + i - 1;
 338                 }
 339         }
 340
 341         // Update all other entries.
 342         FontList::iterator fend = fontlist.end();
 343         for (; it != fend; ++it)
 344                 it->pos(it->pos() - 1);
 345
 346         // Update the insetlist.
 347         owner_->insetlist.decreasePosAfterPos(pos);
 348 }
 349
 350
 351 bool Paragraph::Pimpl::erase(pos_type pos)
 352 {
 353         BOOST_ASSERT(pos < size());
 354
 355         if (tracking()) {
 356                 Change::Type changetype(changes_->lookup(pos));
 357                 changes_->record(Change(Change::DELETED), pos);
 358
 359                 // only allow the actual removal if it was /new/ text
 360                 if (changetype != Change::INSERTED) {
 361                         if (owner_->text_[pos] == Paragraph::META_INSET) {
 362                                 owner_->getInset(pos)->markErased();
 363                         }
 364                         return false;
 365                 }
 366         }
 367
 368         eraseIntern(pos);
 369         return true;
 370 }
 371
 372
 373 int Paragraph::Pimpl::erase(pos_type start, pos_type end)
 374 {
 375         pos_type i = start;
 376         for (pos_type count = end - start; count; --count) {
 377                 if (!erase(i))
 378                         ++i;
 379         }
 380         return end - i;
 381 }
 382
 383
 384 void Paragraph::Pimpl::simpleTeXBlanks(ostream & os, TexRow & texrow,
 385                                        pos_type const i,
 386                                        unsigned int & column,
 387                                        LyXFont const & font,
 388                                        LyXLayout const & style)
 389 {
 390         if (style.pass_thru)
 391                 return;
 392
 393         if (column > lyxrc.ascii_linelen
 394             && i
 395             && getChar(i - 1) != ' '
 396             && (i < size() - 1)
 397             // same in FreeSpacing mode
 398             && !owner_->isFreeSpacing()
 399             // In typewriter mode, we want to avoid
 400             // ! . ? : at the end of a line
 401             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 402                  && (getChar(i - 1) == '.'
 403                      || getChar(i - 1) == '?'
 404                      || getChar(i - 1) == ':'
 405                      || getChar(i - 1) == '!'))) {
 406                 os << '\n';
 407                 texrow.newline();
 408                 texrow.start(owner_->id(), i + 1);
 409                 column = 0;
 410         } else if (style.free_spacing) {
 411                 os << '~';
 412         } else {
 413                 os << ' ';
 414         }
 415 }
 416
 417
 418 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 419 {
 420         pos_type const len = str.length();
 421
 422         // is the paragraph large enough?
 423         if (pos + len > size())
 424                 return false;
 425
 426         // does the wanted text start at point?
 427         for (string::size_type i = 0; i < str.length(); ++i) {
 428                 if (str[i] != owner_->text_[pos + i])
 429                         return false;
 430         }
 431
 432         // is there a font change in middle of the word?
 433         FontList::const_iterator cit = fontlist.begin();
 434         FontList::const_iterator end = fontlist.end();
 435         for (; cit != end; ++cit) {
 436                 if (cit->pos() >= pos)
 437                         break;
 438         }
 439         if (cit != end && pos + len - 1 > cit->pos())
 440                 return false;
 441
 442         return true;
 443 }
 444
 445
 446 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const & buf,
 447                                              BufferParams const & bparams,
 448                                              ostream & os,
 449                                              TexRow & texrow,
 450                                              OutputParams const & runparams,
 451                                              LyXFont & font,
 452                                              LyXFont & running_font,
 453                                              LyXFont & basefont,
 454                                              LyXFont const & outerfont,
 455                                              bool & open_font,
 456                                              Change::Type & running_change,
 457                                              LyXLayout const & style,
 458                                              pos_type & i,
 459                                              unsigned int & column,
 460                                              value_type const c)
 461 {
 462         if (style.pass_thru) {
 463                 if (c != Paragraph::META_INSET) {
 464                         if (c != '\0')
 465                                 os << c;
 466                 } else {
 467                         owner_->getInset(i)->plaintext(buf, os, runparams);
 468                 }
 469                 return;
 470         }
 471
 472         // Two major modes:  LaTeX or plain
 473         // Handle here those cases common to both modes
 474         // and then split to handle the two modes separately.
 475         switch (c) {
 476         case Paragraph::META_INSET: {
 477                 InsetBase * inset = owner_->getInset(i);
 478
 479                 // FIXME: remove this check
 480                 if (!inset)
 481                         break;
 482
 483                 // FIXME: move this to InsetNewline::latex
 484                 if (inset->lyxCode() == InsetBase::NEWLINE_CODE) {
 485                         // newlines are handled differently here than
 486                         // the default in simpleTeXSpecialChars().
 487                         if (!style.newline_allowed) {
 488                                 os << '\n';
 489                         } else {
 490                                 if (open_font) {
 491                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 492                                         open_font = false;
 493                                 }
 494                                 basefont = owner_->getLayoutFont(bparams, outerfont);
 495                                 running_font = basefont;
 496
 497                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 498                                         os << '~';
 499
 500                                 if (runparams.moving_arg)
 501                                         os << "\\protect ";
 502
 503                                 os << "\\\\\n";
 504                         }
 505                         texrow.newline();
 506                         texrow.start(owner_->id(), i + 1);
 507                         column = 0;
 508                         break;
 509                 }
 510
 511                 if (inset->isTextInset()) {
 512                         column += Changes::latexMarkChange(os, running_change,
 513                                 Change::UNCHANGED);
 514                         running_change = Change::UNCHANGED;
 515                 }
 516
 517                 bool close = false;
 518                 ostream::pos_type const len = os.tellp();
 519
 520                 if ((inset->lyxCode() == InsetBase::GRAPHICS_CODE
 521                      || inset->lyxCode() == InsetBase::MATH_CODE
 522                      || inset->lyxCode() == InsetBase::URL_CODE)
 523                     && running_font.isRightToLeft()) {
 524                         os << "\\L{";
 525                         close = true;
 526                 }
 527
 528 #ifdef WITH_WARNINGS
 529 #warning Bug: we can have an empty font change here!
 530 // if there has just been a font change, we are going to close it
 531 // right now, which means stupid latex code like \textsf{}. AFAIK,
 532 // this does not harm dvi output. A minor bug, thus (JMarc)
 533 #endif
 534                 // some insets cannot be inside a font change command
 535                 if (open_font && inset->noFontChange()) {
 536                         column +=running_font.
 537                                 latexWriteEndChanges(os,
 538                                                      basefont,
 539                                                      basefont);
 540                         open_font = false;
 541                         basefont = owner_->getLayoutFont(bparams, outerfont);
 542                         running_font = basefont;
 543                 }
 544
 545                 int tmp = inset->latex(buf, os, runparams);
 546
 547                 if (close)
 548                         os << '}';
 549
 550                 if (tmp) {
 551                         for (int j = 0; j < tmp; ++j) {
 552                                 texrow.newline();
 553                         }
 554                         texrow.start(owner_->id(), i + 1);
 555                         column = 0;
 556                 } else {
 557                         column += os.tellp() - len;
 558                 }
 559         }
 560         break;
 561
 562         default:
 563                 // And now for the special cases within each mode
 564
 565                 switch (c) {
 566                 case '\\':
 567                         os << "\\textbackslash{}";
 568                         column += 15;
 569                         break;
 570
 571                 case '±': case '²': case '³':
 572                 case '×': case '÷': case '¹':
 573                 case '¬': case 'µ':
 574                         if ((bparams.inputenc == "latin1" ||
 575                              bparams.inputenc == "latin9") ||
 576                             (bparams.inputenc == "auto" &&
 577                              (font.language()->encoding()->LatexName()
 578                               == "latin1" ||
 579                               font.language()->encoding()->LatexName()
 580                               == "latin9"))) {
 581                                 os << "\\ensuremath{"
 582                                    << c
 583                                    << '}';
 584                                 column += 13;
 585                         } else {
 586                                 os << c;
 587                         }
 588                         break;
 589
 590                 case '|': case '<': case '>':
 591                         // In T1 encoding, these characters exist
 592                         if (lyxrc.fontenc == "T1") {
 593                                 os << c;
 594                                 //... but we should avoid ligatures
 595                                 if ((c == '>' || c == '<')
 596                                     && i <= size() - 2
 597                                     && getChar(i + 1) == c) {
 598                                         //os << "\\textcompwordmark{}";
 599                                         // Jean-Marc, have a look at
 600                                         // this. I think this works
 601                                         // equally well:
 602                                         os << "\\,{}";
 603                                         // Lgb
 604                                         column += 19;
 605                                 }
 606                                 break;
 607                         }
 608                         // Typewriter font also has them
 609                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 610                                 os << c;
 611                                 break;
 612                         }
 613                         // Otherwise, we use what LaTeX
 614                         // provides us.
 615                         switch (c) {
 616                         case '<':
 617                                 os << "\\textless{}";
 618                                 column += 10;
 619                                 break;
 620                         case '>':
 621                                 os << "\\textgreater{}";
 622                                 column += 13;
 623                                 break;
 624                         case '|':
 625                                 os << "\\textbar{}";
 626                                 column += 9;
 627                                 break;
 628                         }
 629                         break;
 630
 631                 case '-': // "--" in Typewriter mode -> "-{}-"
 632                         if (i <= size() - 2
 633                             && getChar(i + 1) == '-'
 634                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 635                                 os << "-{}";
 636                                 column += 2;
 637                         } else {
 638                                 os << '-';
 639                         }
 640                         break;
 641
 642                 case '\"':
 643                         os << "\\char`\\\"{}";
 644                         column += 9;
 645                         break;
 646
 647                 case '£':
 648                         if (bparams.inputenc == "default") {
 649                                 os << "\\pounds{}";
 650                                 column += 8;
 651                         } else {
 652                                 os << c;
 653                         }
 654                         break;
 655
 656                 case '$': case '&':
 657                 case '%': case '#': case '{':
 658                 case '}': case '_':
 659                         os << '\\' << c;
 660                         column += 1;
 661                         break;
 662
 663                 case '~':
 664                         os << "\\textasciitilde{}";
 665                         column += 16;
 666                         break;
 667
 668                 case '^':
 669                         os << "\\textasciicircum{}";
 670                         column += 17;
 671                         break;
 672
 673                 case '*': case '[': case ']':
 674                         // avoid being mistaken for optional arguments
 675                         os << '{' << c << '}';
 676                         column += 2;
 677                         break;
 678
 679                 case ' ':
 680                         // Blanks are printed before font switching.
 681                         // Sure? I am not! (try nice-latex)
 682                         // I am sure it's correct. LyX might be smarter
 683                         // in the future, but for now, nothing wrong is
 684                         // written. (Asger)
 685                         break;
 686
 687                 default:
 688
 689                         // I assume this is hack treating typewriter as verbatim
 690                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 691                                 if (c != '\0') {
 692                                         os << c;
 693                                 }
 694                                 break;
 695                         }
 696
 697                         // LyX, LaTeX etc.
 698
 699                         // FIXME: if we have "LaTeX" with a font
 700                         // change in the middle (before the 'T', then
 701                         // the "TeX" part is still special cased.
 702                         // Really we should only operate this on
 703                         // "words" for some definition of word
 704
 705                         size_t pnr = 0;
 706
 707                         for (; pnr < phrases_nr; ++pnr) {
 708                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 709                                         os << special_phrases[pnr].macro;
 710                                         i += special_phrases[pnr].phrase.length() - 1;
 711                                         column += special_phrases[pnr].macro.length() - 1;
 712                                         break;
 713                                 }
 714                         }
 715
 716                         if (pnr == phrases_nr && c != '\0') {
 717                                 os << c;
 718                         }
 719                         break;
 720                 }
 721         }
 722 }
 723
 724
 725 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 726                                 LyXLayout const & layout) const
 727 {
 728         BufferParams const & bparams = features.bufferParams();
 729
 730         // check the params.
 731         if (!params.spacing().isDefault())
 732                 features.require("setspace");
 733
 734         // then the layouts
 735         features.useLayout(layout.name());
 736
 737         // then the fonts
 738         Language const * doc_language = bparams.language;
 739
 740         FontList::const_iterator fcit = fontlist.begin();
 741         FontList::const_iterator fend = fontlist.end();
 742         for (; fcit != fend; ++fcit) {
 743                 if (fcit->font().noun() == LyXFont::ON) {
 744                         lyxerr[Debug::LATEX] << "font.noun: "
 745                                              << fcit->font().noun()
 746                                              << endl;
 747                         features.require("noun");
 748                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 749                                              << fcit->font().stateText(0)
 750                                              << endl;
 751                 }
 752                 switch (fcit->font().color()) {
 753                 case LColor::none:
 754                 case LColor::inherit:
 755                 case LColor::ignore:
 756                         // probably we should put here all interface colors used for
 757                         // font displaying! For now I just add this ones I know of (Jug)
 758                 case LColor::latex:
 759                 case LColor::note:
 760                         break;
 761                 default:
 762                         features.require("color");
 763                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 764                                              << fcit->font().stateText(0)
 765                                              << endl;
 766                 }
 767
 768                 Language const * language = fcit->font().language();
 769                 if (language->babel() != doc_language->babel() &&
 770                     language != ignore_language &&
 771                     language != latex_language)
 772                 {
 773                         features.useLanguage(language);
 774                         lyxerr[Debug::LATEX] << "Found language "
 775                                              << language->babel() << endl;
 776                 }
 777         }
 778
 779         if (!params.leftIndent().zero())
 780                 features.require("ParagraphLeftIndent");
 781
 782         // then the insets
 783         InsetList::iterator icit = owner_->insetlist.begin();
 784         InsetList::iterator iend = owner_->insetlist.end();
 785         for (; icit != iend; ++icit) {
 786                 if (icit->inset) {
 787                         icit->inset->validate(features);
 788                         if (layout.needprotect &&
 789                             icit->inset->lyxCode() == InsetBase::FOOT_CODE)
 790                                 features.require("NeedLyXFootnoteCode");
 791                 }
 792         }
 793
 794         // then the contents
 795         for (pos_type i = 0; i < size() ; ++i) {
 796                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 797                         if (!special_phrases[pnr].builtin
 798                             && isTextAt(special_phrases[pnr].phrase, i)) {
 799                                 features.require(special_phrases[pnr].phrase);
 800                                 break;
 801                         }
 802                 }
 803         }
 804 }