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