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 "latexrunparams.h"
  24 #include "lyxrc.h"
  25 #include "texrow.h"
  26
  27 #include "support/LAssert.h"
  28
  29 using namespace lyx::support;
  30
  31 using lyx::pos_type;
  32
  33 using std::endl;
  34 using std::upper_bound;
  35
  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         text = p.text;
  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::clear()
  86 {
  87         text.clear();
  88 #warning changes ?
  89 }
  90
  91
  92 void Paragraph::Pimpl::setContentsFromPar(Paragraph const & par)
  93 {
  94         text = par.pimpl_->text;
  95         if (par.pimpl_->tracking()) {
  96                 changes_.reset(new Changes(*(par.pimpl_->changes_.get())));
  97         }
  98 }
  99
 100
 101 void Paragraph::Pimpl::trackChanges(Change::Type type)
 102 {
 103         if (tracking()) {
 104                 lyxerr[Debug::CHANGES] << "already tracking for par " << id_ << endl;
 105                 return;
 106         }
 107
 108         lyxerr[Debug::CHANGES] << "track changes for par "
 109                 << id_ << " type " << type << endl;
 110         changes_.reset(new Changes(type));
 111         changes_->set(type, 0, size());
 112 }
 113
 114
 115 void Paragraph::Pimpl::untrackChanges()
 116 {
 117         changes_.reset(0);
 118 }
 119
 120
 121 void Paragraph::Pimpl::cleanChanges()
 122 {
 123         // if we're not tracking, we don't want to reset...
 124         if (!tracking())
 125                 return;
 126
 127         changes_.reset(new Changes(Change::INSERTED));
 128         changes_->set(Change::INSERTED, 0, size());
 129 }
 130
 131
 132 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
 133 {
 134         if (!tracking())
 135                 return false;
 136
 137         return changes_->isChange(start, end);
 138 }
 139
 140
 141 bool Paragraph::Pimpl::isChangeEdited(pos_type start, pos_type end) const
 142 {
 143         if (!tracking())
 144                 return false;
 145
 146         return changes_->isChangeEdited(start, end);
 147 }
 148
 149
 150 void Paragraph::Pimpl::setChange(pos_type pos, Change::Type type)
 151 {
 152         if (!tracking())
 153                 return;
 154
 155         changes_->set(type, pos);
 156 }
 157
 158
 159 Change::Type Paragraph::Pimpl::lookupChange(pos_type pos) const
 160 {
 161         if (!tracking())
 162                 return Change::UNCHANGED;
 163
 164         return changes_->lookup(pos);
 165 }
 166
 167
 168 Change const Paragraph::Pimpl::lookupChangeFull(pos_type pos) const
 169 {
 170         if (!tracking())
 171                 return Change(Change::UNCHANGED);
 172
 173         return changes_->lookupFull(pos);
 174 }
 175
 176
 177 void Paragraph::Pimpl::markErased()
 178 {
 179         Assert(tracking());
 180
 181         // FIXME: we should actually remove INSERTED chars.
 182         // difficult because owning insettexts/tabulars need
 183         // to update themselves when rows etc. change
 184         changes_->set(Change::DELETED, 0, size());
 185         changes_->reset(Change::DELETED);
 186 }
 187
 188
 189 void Paragraph::Pimpl::acceptChange(pos_type start, pos_type end)
 190 {
 191         if (!tracking())
 192                 return;
 193
 194         if (!size()) {
 195                 changes_.reset(new Changes(Change::UNCHANGED));
 196                 return;
 197         }
 198
 199         lyxerr << "acceptchange" << endl;
 200         pos_type i = start;
 201
 202         for (; i < end; ++i) {
 203                 switch (lookupChange(i)) {
 204                         case Change::UNCHANGED:
 205                                 break;
 206
 207                         case Change::INSERTED:
 208                                 changes_->set(Change::UNCHANGED, i);
 209                                 break;
 210
 211                         case Change::DELETED:
 212                                 eraseIntern(i);
 213                                 changes_->erase(i);
 214                                 --end;
 215                                 --i;
 216                                 break;
 217                 }
 218         }
 219
 220         lyxerr << "endacceptchange" << endl;
 221         changes_->reset(Change::UNCHANGED);
 222 }
 223
 224
 225 void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
 226 {
 227         if (!tracking())
 228                 return;
 229
 230         if (!size()) {
 231                 changes_.reset(new Changes(Change::UNCHANGED));
 232                 return;
 233         }
 234
 235         pos_type i = start;
 236
 237         for (; i < end; ++i) {
 238                 switch (lookupChange(i)) {
 239                         case Change::UNCHANGED:
 240                                 break;
 241
 242                         case Change::INSERTED:
 243                                 eraseIntern(i);
 244                                 changes_->erase(i);
 245                                 --end;
 246                                 --i;
 247                                 break;
 248
 249                         case Change::DELETED:
 250                                 changes_->set(Change::UNCHANGED, i);
 251                                 break;
 252                 }
 253         }
 254         changes_->reset(Change::UNCHANGED);
 255 }
 256
 257
 258 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 259 {
 260 #if 1
 261         // This is in the critical path for loading!
 262         pos_type const siz = size();
 263
 264         Assert(pos <= siz);
 265
 266         if (pos == siz) {
 267                 lyxerr << "getChar() on pos " << pos << " in par id "
 268                        << owner_->id() << " of size " << siz
 269                        << "  is a bit silly !" << endl;
 270                 return '\0';
 271         }
 272
 273         return text[pos];
 274 #else
 275         Assert(pos < size());
 276         return text[pos];
 277 #endif
 278 }
 279
 280
 281 void Paragraph::Pimpl::setChar(pos_type pos, value_type c)
 282 {
 283 #warning changes
 284         text[pos] = c;
 285 }
 286
 287
 288 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c,
 289                                   LyXFont const & font, Change change)
 290 {
 291         Assert(pos <= size());
 292
 293         if (tracking()) {
 294                 changes_->record(change, pos);
 295         }
 296
 297         // This is actually very common when parsing buffers (and
 298         // maybe inserting ascii text)
 299         if (pos == size()) {
 300                 // when appending characters, no need to update tables
 301                 text.push_back(c);
 302                 owner_->setFont(pos, font);
 303                 return;
 304         }
 305
 306         text.insert(text.begin() + pos, c);
 307
 308         // Update the font table.
 309         FontTable search_font(pos, LyXFont());
 310         for (FontList::iterator it = lower_bound(fontlist.begin(),
 311                                                       fontlist.end(),
 312                                                       search_font, matchFT());
 313              it != fontlist.end(); ++it)
 314         {
 315                 it->pos(it->pos() + 1);
 316         }
 317
 318         // Update the insets
 319         owner_->insetlist.increasePosAfterPos(pos);
 320
 321         owner_->setFont(pos, font);
 322 }
 323
 324
 325 void Paragraph::Pimpl::insertInset(pos_type pos,
 326                                    InsetOld * inset, LyXFont const & font, Change change)
 327 {
 328         Assert(inset);
 329         Assert(pos <= size());
 330
 331         insertChar(pos, META_INSET, font, change);
 332         Assert(text[pos] == META_INSET);
 333
 334         // Add a new entry in the insetlist.
 335         owner_->insetlist.insert(inset, pos);
 336
 337         if (inset_owner)
 338                 inset->setOwner(inset_owner);
 339 }
 340
 341
 342 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 343 {
 344         // if it is an inset, delete the inset entry
 345         if (text[pos] == Paragraph::META_INSET) {
 346                 owner_->insetlist.erase(pos);
 347         }
 348
 349         text.erase(text.begin() + pos);
 350
 351         // Erase entries in the tables.
 352         FontTable search_font(pos, LyXFont());
 353
 354         FontList::iterator it =
 355                 lower_bound(fontlist.begin(),
 356                             fontlist.end(),
 357                             search_font, matchFT());
 358         if (it != fontlist.end() && it->pos() == pos &&
 359             (pos == 0 ||
 360              (it != fontlist.begin()
 361               && boost::prior(it)->pos() == pos - 1))) {
 362                 // If it is a multi-character font
 363                 // entry, we just make it smaller
 364                 // (see update below), otherwise we
 365                 // should delete it.
 366                 unsigned int const i = it - fontlist.begin();
 367                 fontlist.erase(fontlist.begin() + i);
 368                 it = fontlist.begin() + i;
 369                 if (i > 0 && i < fontlist.size() &&
 370                     fontlist[i - 1].font() == fontlist[i].font()) {
 371                         fontlist.erase(fontlist.begin() + i - 1);
 372                         it = fontlist.begin() + i - 1;
 373                 }
 374         }
 375
 376         // Update all other entries.
 377         FontList::iterator fend = fontlist.end();
 378         for (; it != fend; ++it)
 379                 it->pos(it->pos() - 1);
 380
 381         // Update the insetlist.
 382         owner_->insetlist.decreasePosAfterPos(pos);
 383 }
 384
 385
 386 bool Paragraph::Pimpl::erase(pos_type pos)
 387 {
 388         Assert(pos < size());
 389
 390         if (tracking()) {
 391                 Change::Type changetype(changes_->lookup(pos));
 392                 changes_->record(Change(Change::DELETED), pos);
 393
 394                 // only allow the actual removal if it was /new/ text
 395                 if (changetype != Change::INSERTED) {
 396                         if (text[pos] == Paragraph::META_INSET) {
 397                                 InsetOld * i(owner_->getInset(pos));
 398                                 i->markErased();
 399                         }
 400                         return false;
 401                 }
 402         }
 403
 404         eraseIntern(pos);
 405         return true;
 406 }
 407
 408
 409 int Paragraph::Pimpl::erase(pos_type start, pos_type end)
 410 {
 411         pos_type i = start;
 412         pos_type count = end - start;
 413         while (count) {
 414                 if (!erase(i)) {
 415                         ++i;
 416                 }
 417                 --count;
 418         }
 419         return end - i;
 420 }
 421
 422
 423 void Paragraph::Pimpl::simpleTeXBlanks(ostream & os, TexRow & texrow,
 424                                        pos_type const i,
 425                                        unsigned int & column,
 426                                        LyXFont const & font,
 427                                        LyXLayout const & style)
 428 {
 429         if (style.pass_thru)
 430                 return;
 431
 432         if (column > lyxrc.ascii_linelen
 433             && i
 434             && getChar(i - 1) != ' '
 435             && (i < size() - 1)
 436             // same in FreeSpacing mode
 437             && !owner_->isFreeSpacing()
 438             // In typewriter mode, we want to avoid
 439             // ! . ? : at the end of a line
 440             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 441                  && (getChar(i - 1) == '.'
 442                      || getChar(i - 1) == '?'
 443                      || getChar(i - 1) == ':'
 444                      || getChar(i - 1) == '!'))) {
 445                 os << '\n';
 446                 texrow.newline();
 447                 texrow.start(owner_->id(), i + 1);
 448                 column = 0;
 449         } else if (style.free_spacing) {
 450                 os << '~';
 451         } else {
 452                 os << ' ';
 453         }
 454 }
 455
 456
 457 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 458 {
 459         pos_type const len = str.length();
 460
 461         // is the paragraph large enough?
 462         if (pos + len > size())
 463                 return false;
 464
 465         // does the wanted text start at point?
 466         for (string::size_type i = 0; i < str.length(); ++i) {
 467                 if (str[i] != text[pos + i])
 468                         return false;
 469         }
 470
 471         // is there a font change in middle of the word?
 472         FontList::const_iterator cit = fontlist.begin();
 473         FontList::const_iterator end = fontlist.end();
 474         for (; cit != end; ++cit) {
 475                 if (cit->pos() >= pos)
 476                         break;
 477         }
 478         if (cit != end && pos + len - 1 > cit->pos())
 479                 return false;
 480
 481         return true;
 482 }
 483
 484
 485 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const & buf,
 486                                              BufferParams const & bparams,
 487                                              ostream & os,
 488                                              TexRow & texrow,
 489                                              LatexRunParams const & runparams,
 490                                              LyXFont & font,
 491                                              LyXFont & running_font,
 492                                              LyXFont & basefont,
 493                                              LyXFont const & outerfont,
 494                                              bool & open_font,
 495                                              Change::Type & running_change,
 496                                              LyXLayout const & style,
 497                                              pos_type & i,
 498                                              unsigned int & column,
 499                                              value_type const c)
 500 {
 501         if (style.pass_thru) {
 502                 if (c != Paragraph::META_INSET) {
 503                         if (c != '\0')
 504                                 os << c;
 505                 } else {
 506                         InsetOld const * inset = owner_->getInset(i);
 507                         inset->ascii(buf, os, 0);
 508                 }
 509                 return;
 510         }
 511
 512         // Two major modes:  LaTeX or plain
 513         // Handle here those cases common to both modes
 514         // and then split to handle the two modes separately.
 515         switch (c) {
 516         case Paragraph::META_INSET: {
 517                 InsetOld * inset = owner_->getInset(i);
 518
 519                 // FIXME: remove this check
 520                 if (!inset)
 521                         break;
 522
 523                 // FIXME: move this to InsetNewline::latex
 524                 if (inset->lyxCode() == InsetOld::NEWLINE_CODE) {
 525                         // newlines are handled differently here than
 526                         // the default in simpleTeXSpecialChars().
 527                         if (!style.newline_allowed) {
 528                                 os << '\n';
 529                         } else {
 530                                 if (open_font) {
 531                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 532                                         open_font = false;
 533                                 }
 534                                 basefont = owner_->getLayoutFont(bparams, outerfont);
 535                                 running_font = basefont;
 536
 537                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 538                                         os << '~';
 539
 540                                 if (runparams.moving_arg)
 541                                         os << "\\protect ";
 542
 543                                 os << "\\\\\n";
 544                         }
 545                         texrow.newline();
 546                         texrow.start(owner_->id(), i + 1);
 547                         column = 0;
 548                         break;
 549                 }
 550
 551                 if (inset->isTextInset()) {
 552                         column += Changes::latexMarkChange(os, running_change,
 553                                 Change::UNCHANGED);
 554                         running_change = Change::UNCHANGED;
 555                 }
 556
 557                 bool close = false;
 558                 int const len = os.tellp();
 559                 //ostream::pos_type const len = os.tellp();
 560                 if ((inset->lyxCode() == InsetOld::GRAPHICS_CODE
 561                      || inset->lyxCode() == InsetOld::MATH_CODE
 562                      || inset->lyxCode() == InsetOld::URL_CODE)
 563                     && running_font.isRightToLeft()) {
 564                         os << "\\L{";
 565                         close = true;
 566                 }
 567
 568 #ifdef WITH_WARNINGS
 569 #warning Bug: we can have an empty font change here!
 570 // if there has just been a font change, we are going to close it
 571 // right now, which means stupid latex code like \textsf{}. AFAIK,
 572 // this does not harm dvi output. A minor bug, thus (JMarc)
 573 #endif
 574                 // some insets cannot be inside a font change command
 575                 if (open_font && inset->noFontChange()) {
 576                         column +=running_font.
 577                                 latexWriteEndChanges(os,
 578                                                      basefont,
 579                                                      basefont);
 580                         open_font = false;
 581                         basefont = owner_->getLayoutFont(bparams, outerfont);
 582                         running_font = basefont;
 583                 }
 584
 585                 int tmp = inset->latex(buf, os, runparams);
 586
 587                 if (close)
 588                         os << '}';
 589
 590                 if (tmp) {
 591                         for (int j = 0; j < tmp; ++j) {
 592                                 texrow.newline();
 593                         }
 594                         texrow.start(owner_->id(), i + 1);
 595                         column = 0;
 596                 } else {
 597                         column += int(os.tellp()) - len;
 598                 }
 599         }
 600         break;
 601
 602         default:
 603                 // And now for the special cases within each mode
 604
 605                 switch (c) {
 606                 case '\\':
 607                         os << "\\textbackslash{}";
 608                         column += 15;
 609                         break;
 610
 611                 case '±': case '²': case '³':
 612                 case '×': case '÷': case '¹':
 613                 case '¬': case 'µ':
 614                         if ((bparams.inputenc == "latin1" ||
 615                              bparams.inputenc == "latin9") ||
 616                             (bparams.inputenc == "auto" &&
 617                              (font.language()->encoding()->LatexName()
 618                               == "latin1" ||
 619                               font.language()->encoding()->LatexName()
 620                               == "latin9"))) {
 621                                 os << "\\ensuremath{"
 622                                    << c
 623                                    << '}';
 624                                 column += 13;
 625                         } else {
 626                                 os << c;
 627                         }
 628                         break;
 629
 630                 case '|': case '<': case '>':
 631                         // In T1 encoding, these characters exist
 632                         if (lyxrc.fontenc == "T1") {
 633                                 os << c;
 634                                 //... but we should avoid ligatures
 635                                 if ((c == '>' || c == '<')
 636                                     && i <= size() - 2
 637                                     && getChar(i + 1) == c) {
 638                                         //os << "\\textcompwordmark{}";
 639                                         // Jean-Marc, have a look at
 640                                         // this. I think this works
 641                                         // equally well:
 642                                         os << "\\,{}";
 643                                         // Lgb
 644                                         column += 19;
 645                                 }
 646                                 break;
 647                         }
 648                         // Typewriter font also has them
 649                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 650                                 os << c;
 651                                 break;
 652                         }
 653                         // Otherwise, we use what LaTeX
 654                         // provides us.
 655                         switch (c) {
 656                         case '<':
 657                                 os << "\\textless{}";
 658                                 column += 10;
 659                                 break;
 660                         case '>':
 661                                 os << "\\textgreater{}";
 662                                 column += 13;
 663                                 break;
 664                         case '|':
 665                                 os << "\\textbar{}";
 666                                 column += 9;
 667                                 break;
 668                         }
 669                         break;
 670
 671                 case '-': // "--" in Typewriter mode -> "-{}-"
 672                         if (i <= size() - 2
 673                             && getChar(i + 1) == '-'
 674                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 675                                 os << "-{}";
 676                                 column += 2;
 677                         } else {
 678                                 os << '-';
 679                         }
 680                         break;
 681
 682                 case '\"':
 683                         os << "\\char`\\\"{}";
 684                         column += 9;
 685                         break;
 686
 687                 case '£':
 688                         if (bparams.inputenc == "default") {
 689                                 os << "\\pounds{}";
 690                                 column += 8;
 691                         } else {
 692                                 os << c;
 693                         }
 694                         break;
 695
 696                 case '$': case '&':
 697                 case '%': case '#': case '{':
 698                 case '}': case '_':
 699                         os << '\\' << c;
 700                         column += 1;
 701                         break;
 702
 703                 case '~':
 704                         os << "\\textasciitilde{}";
 705                         column += 16;
 706                         break;
 707
 708                 case '^':
 709                         os << "\\textasciicircum{}";
 710                         column += 17;
 711                         break;
 712
 713                 case '*': case '[': case ']':
 714                         // avoid being mistaken for optional arguments
 715                         os << '{' << c << '}';
 716                         column += 2;
 717                         break;
 718
 719                 case ' ':
 720                         // Blanks are printed before font switching.
 721                         // Sure? I am not! (try nice-latex)
 722                         // I am sure it's correct. LyX might be smarter
 723                         // in the future, but for now, nothing wrong is
 724                         // written. (Asger)
 725                         break;
 726
 727                 default:
 728
 729                         // I assume this is hack treating typewriter as verbatim
 730                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 731                                 if (c != '\0') {
 732                                         os << c;
 733                                 }
 734                                 break;
 735                         }
 736
 737                         // LyX, LaTeX etc.
 738
 739                         // FIXME: if we have "LaTeX" with a font
 740                         // change in the middle (before the 'T', then
 741                         // the "TeX" part is still special cased.
 742                         // Really we should only operate this on
 743                         // "words" for some definition of word
 744
 745                         size_t pnr = 0;
 746
 747                         for (; pnr < phrases_nr; ++pnr) {
 748                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 749                                         os << special_phrases[pnr].macro;
 750                                         i += special_phrases[pnr].phrase.length() - 1;
 751                                         column += special_phrases[pnr].macro.length() - 1;
 752                                         break;
 753                                 }
 754                         }
 755
 756                         if (pnr == phrases_nr && c != '\0') {
 757                                 os << c;
 758                         }
 759                         break;
 760                 }
 761         }
 762 }
 763
 764
 765 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 766                                 LyXLayout const & layout) const
 767 {
 768         BufferParams const & bparams = features.bufferParams();
 769
 770         // check the params.
 771         if (params.lineTop() || params.lineBottom())
 772                 features.require("lyxline");
 773         if (!params.spacing().isDefault())
 774                 features.require("setspace");
 775
 776         // then the layouts
 777         features.useLayout(layout.name());
 778
 779         // then the fonts
 780         Language const * doc_language = bparams.language;
 781
 782         FontList::const_iterator fcit = fontlist.begin();
 783         FontList::const_iterator fend = fontlist.end();
 784         for (; fcit != fend; ++fcit) {
 785                 if (fcit->font().noun() == LyXFont::ON) {
 786                         lyxerr[Debug::LATEX] << "font.noun: "
 787                                              << fcit->font().noun()
 788                                              << endl;
 789                         features.require("noun");
 790                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 791                                              << fcit->font().stateText(0)
 792                                              << endl;
 793                 }
 794                 switch (fcit->font().color()) {
 795                 case LColor::none:
 796                 case LColor::inherit:
 797                 case LColor::ignore:
 798                         // probably we should put here all interface colors used for
 799                         // font displaying! For now I just add this ones I know of (Jug)
 800                 case LColor::latex:
 801                 case LColor::note:
 802                         break;
 803                 default:
 804                         features.require("color");
 805                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 806                                              << fcit->font().stateText(0)
 807                                              << endl;
 808                 }
 809
 810                 Language const * language = fcit->font().language();
 811                 if (language->babel() != doc_language->babel() &&
 812                     language != ignore_language &&
 813                     language != latex_language)
 814                 {
 815                         features.useLanguage(language);
 816                         lyxerr[Debug::LATEX] << "Found language "
 817                                              << language->babel() << endl;
 818                 }
 819         }
 820
 821         if (!params.leftIndent().zero())
 822                 features.require("ParagraphLeftIndent");
 823
 824         // then the insets
 825         InsetList::iterator icit = owner_->insetlist.begin();
 826         InsetList::iterator iend = owner_->insetlist.end();
 827         for (; icit != iend; ++icit) {
 828                 if (icit->inset) {
 829                         icit->inset->validate(features);
 830                         if (layout.needprotect &&
 831                             icit->inset->lyxCode() == InsetOld::FOOT_CODE)
 832                                 features.require("NeedLyXFootnoteCode");
 833                 }
 834         }
 835
 836         // then the contents
 837         for (pos_type i = 0; i < size() ; ++i) {
 838                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 839                         if (!special_phrases[pnr].builtin
 840                             && isTextAt(special_phrases[pnr].phrase, i)) {
 841                                 features.require(special_phrases[pnr].phrase);
 842                                 break;
 843                         }
 844                 }
 845         }
 846 }