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 "texrow.h"
  25
  26 #include "support/LAssert.h"
  27
  28 using namespace lyx::support;
  29 using lyx::pos_type;
  30 using std::endl;
  31 using std::ostream;
  32 using std::upper_bound;
  33 using std::lower_bound;
  34
  35 // Initialize static member.
  36 ShareContainer<LyXFont> Paragraph::Pimpl::FontTable::container;
  37 // Initialization of the counter for the paragraph id's,
  38 unsigned int Paragraph::Pimpl::paragraph_id = 0;
  39
  40 namespace {
  41
  42 struct special_phrase {
  43         string phrase;
  44         string macro;
  45         bool builtin;
  46 };
  47
  48 special_phrase special_phrases[] = {
  49         { "LyX", "\\LyX{}", false },
  50         { "TeX", "\\TeX{}", true },
  51         { "LaTeX2e", "\\LaTeXe{}", true },
  52         { "LaTeX", "\\LaTeX{}", true },
  53 };
  54
  55 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
  56
  57 } // namespace anon
  58
  59
  60 Paragraph::Pimpl::Pimpl(Paragraph * owner)
  61         : owner_(owner)
  62 {
  63         inset_owner = 0;
  64         id_ = paragraph_id++;
  65 }
  66
  67
  68 Paragraph::Pimpl::Pimpl(Pimpl const & p, Paragraph * owner)
  69         : params(p.params), owner_(owner)
  70 {
  71         inset_owner = p.inset_owner;
  72         text = p.text;
  73         fontlist = p.fontlist;
  74         id_ = paragraph_id++;
  75
  76         if (p.tracking())
  77                 changes_.reset(new Changes(*p.changes_.get()));
  78 }
  79
  80
  81 void Paragraph::Pimpl::clear()
  82 {
  83         text.clear();
  84 #warning changes ?
  85 }
  86
  87
  88 void Paragraph::Pimpl::setContentsFromPar(Paragraph const & par)
  89 {
  90         text = par.pimpl_->text;
  91         if (par.pimpl_->tracking()) {
  92                 changes_.reset(new Changes(*(par.pimpl_->changes_.get())));
  93         }
  94 }
  95
  96
  97 void Paragraph::Pimpl::trackChanges(Change::Type type)
  98 {
  99         if (tracking()) {
 100                 lyxerr[Debug::CHANGES] << "already tracking for par " << id_ << endl;
 101                 return;
 102         }
 103
 104         lyxerr[Debug::CHANGES] << "track changes for par "
 105                 << id_ << " type " << type << endl;
 106         changes_.reset(new Changes(type));
 107         changes_->set(type, 0, size());
 108 }
 109
 110
 111 void Paragraph::Pimpl::untrackChanges()
 112 {
 113         changes_.reset(0);
 114 }
 115
 116
 117 void Paragraph::Pimpl::cleanChanges()
 118 {
 119         // if we're not tracking, we don't want to reset...
 120         if (!tracking())
 121                 return;
 122
 123         changes_.reset(new Changes(Change::INSERTED));
 124         changes_->set(Change::INSERTED, 0, size());
 125 }
 126
 127
 128 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
 129 {
 130         if (!tracking())
 131                 return false;
 132
 133         return changes_->isChange(start, end);
 134 }
 135
 136
 137 bool Paragraph::Pimpl::isChangeEdited(pos_type start, pos_type end) const
 138 {
 139         if (!tracking())
 140                 return false;
 141
 142         return changes_->isChangeEdited(start, end);
 143 }
 144
 145
 146 void Paragraph::Pimpl::setChange(pos_type pos, Change::Type type)
 147 {
 148         if (!tracking())
 149                 return;
 150
 151         changes_->set(type, pos);
 152 }
 153
 154
 155 Change::Type Paragraph::Pimpl::lookupChange(pos_type pos) const
 156 {
 157         if (!tracking())
 158                 return Change::UNCHANGED;
 159
 160         return changes_->lookup(pos);
 161 }
 162
 163
 164 Change const Paragraph::Pimpl::lookupChangeFull(pos_type pos) const
 165 {
 166         if (!tracking())
 167                 return Change(Change::UNCHANGED);
 168
 169         return changes_->lookupFull(pos);
 170 }
 171
 172
 173 void Paragraph::Pimpl::markErased()
 174 {
 175         Assert(tracking());
 176
 177         // FIXME: we should actually remove INSERTED chars.
 178         // difficult because owning insettexts/tabulars need
 179         // to update themselves when rows etc. change
 180         changes_->set(Change::DELETED, 0, size());
 181         changes_->reset(Change::DELETED);
 182 }
 183
 184
 185 void Paragraph::Pimpl::acceptChange(pos_type start, pos_type end)
 186 {
 187         if (!tracking())
 188                 return;
 189
 190         if (!size()) {
 191                 changes_.reset(new Changes(Change::UNCHANGED));
 192                 return;
 193         }
 194
 195         lyxerr << "acceptchange" << endl;
 196         pos_type i = start;
 197
 198         for (; i < end; ++i) {
 199                 switch (lookupChange(i)) {
 200                         case Change::UNCHANGED:
 201                                 break;
 202
 203                         case Change::INSERTED:
 204                                 changes_->set(Change::UNCHANGED, i);
 205                                 break;
 206
 207                         case Change::DELETED:
 208                                 eraseIntern(i);
 209                                 changes_->erase(i);
 210                                 --end;
 211                                 --i;
 212                                 break;
 213                 }
 214         }
 215
 216         lyxerr << "endacceptchange" << endl;
 217         changes_->reset(Change::UNCHANGED);
 218 }
 219
 220
 221 void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
 222 {
 223         if (!tracking())
 224                 return;
 225
 226         if (!size()) {
 227                 changes_.reset(new Changes(Change::UNCHANGED));
 228                 return;
 229         }
 230
 231         pos_type i = start;
 232
 233         for (; i < end; ++i) {
 234                 switch (lookupChange(i)) {
 235                         case Change::UNCHANGED:
 236                                 break;
 237
 238                         case Change::INSERTED:
 239                                 eraseIntern(i);
 240                                 changes_->erase(i);
 241                                 --end;
 242                                 --i;
 243                                 break;
 244
 245                         case Change::DELETED:
 246                                 changes_->set(Change::UNCHANGED, i);
 247                                 break;
 248                 }
 249         }
 250         changes_->reset(Change::UNCHANGED);
 251 }
 252
 253
 254 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 255 {
 256 #if 1
 257         // This is in the critical path for loading!
 258         pos_type const siz = size();
 259
 260         Assert(pos <= siz);
 261
 262         if (pos == siz) {
 263                 lyxerr << "getChar() on pos " << pos << " in par id "
 264                        << owner_->id() << " of size " << siz
 265                        << "  is a bit silly !" << endl;
 266                 return '\0';
 267         }
 268
 269         return text[pos];
 270 #else
 271         Assert(pos < size());
 272         return text[pos];
 273 #endif
 274 }
 275
 276
 277 void Paragraph::Pimpl::setChar(pos_type pos, value_type c)
 278 {
 279 #warning changes
 280         text[pos] = c;
 281 }
 282
 283
 284 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c,
 285                                   LyXFont const & font, Change change)
 286 {
 287         Assert(pos <= size());
 288
 289         if (tracking()) {
 290                 changes_->record(change, pos);
 291         }
 292
 293         // This is actually very common when parsing buffers (and
 294         // maybe inserting ascii text)
 295         if (pos == size()) {
 296                 // when appending characters, no need to update tables
 297                 text.push_back(c);
 298                 owner_->setFont(pos, font);
 299                 return;
 300         }
 301
 302         text.insert(text.begin() + pos, c);
 303
 304         // Update the font table.
 305         FontTable search_font(pos, LyXFont());
 306         for (FontList::iterator it = lower_bound(fontlist.begin(),
 307                                                       fontlist.end(),
 308                                                       search_font, matchFT());
 309              it != fontlist.end(); ++it)
 310         {
 311                 it->pos(it->pos() + 1);
 312         }
 313
 314         // Update the insets
 315         owner_->insetlist.increasePosAfterPos(pos);
 316
 317         owner_->setFont(pos, font);
 318 }
 319
 320
 321 void Paragraph::Pimpl::insertInset(pos_type pos,
 322                                    InsetOld * inset, LyXFont const & font, Change change)
 323 {
 324         Assert(inset);
 325         Assert(pos <= size());
 326
 327         insertChar(pos, META_INSET, font, change);
 328         Assert(text[pos] == META_INSET);
 329
 330         // Add a new entry in the insetlist.
 331         owner_->insetlist.insert(inset, pos);
 332
 333         if (inset_owner)
 334                 inset->setOwner(inset_owner);
 335 }
 336
 337
 338 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 339 {
 340         // if it is an inset, delete the inset entry
 341         if (text[pos] == Paragraph::META_INSET) {
 342                 owner_->insetlist.erase(pos);
 343         }
 344
 345         text.erase(text.begin() + pos);
 346
 347         // Erase entries in the tables.
 348         FontTable search_font(pos, LyXFont());
 349
 350         FontList::iterator it =
 351                 lower_bound(fontlist.begin(),
 352                             fontlist.end(),
 353                             search_font, matchFT());
 354         if (it != fontlist.end() && it->pos() == pos &&
 355             (pos == 0 ||
 356              (it != fontlist.begin()
 357               && boost::prior(it)->pos() == pos - 1))) {
 358                 // If it is a multi-character font
 359                 // entry, we just make it smaller
 360                 // (see update below), otherwise we
 361                 // should delete it.
 362                 unsigned int const i = it - fontlist.begin();
 363                 fontlist.erase(fontlist.begin() + i);
 364                 it = fontlist.begin() + i;
 365                 if (i > 0 && i < fontlist.size() &&
 366                     fontlist[i - 1].font() == fontlist[i].font()) {
 367                         fontlist.erase(fontlist.begin() + i - 1);
 368                         it = fontlist.begin() + i - 1;
 369                 }
 370         }
 371
 372         // Update all other entries.
 373         FontList::iterator fend = fontlist.end();
 374         for (; it != fend; ++it)
 375                 it->pos(it->pos() - 1);
 376
 377         // Update the insetlist.
 378         owner_->insetlist.decreasePosAfterPos(pos);
 379 }
 380
 381
 382 bool Paragraph::Pimpl::erase(pos_type pos)
 383 {
 384         Assert(pos < size());
 385
 386         if (tracking()) {
 387                 Change::Type changetype(changes_->lookup(pos));
 388                 changes_->record(Change(Change::DELETED), pos);
 389
 390                 // only allow the actual removal if it was /new/ text
 391                 if (changetype != Change::INSERTED) {
 392                         if (text[pos] == Paragraph::META_INSET) {
 393                                 InsetOld * i(owner_->getInset(pos));
 394                                 i->markErased();
 395                         }
 396                         return false;
 397                 }
 398         }
 399
 400         eraseIntern(pos);
 401         return true;
 402 }
 403
 404
 405 int Paragraph::Pimpl::erase(pos_type start, pos_type end)
 406 {
 407         pos_type i = start;
 408         pos_type count = end - start;
 409         while (count) {
 410                 if (!erase(i)) {
 411                         ++i;
 412                 }
 413                 --count;
 414         }
 415         return end - i;
 416 }
 417
 418
 419 void Paragraph::Pimpl::simpleTeXBlanks(ostream & os, TexRow & texrow,
 420                                        pos_type const i,
 421                                        unsigned int & column,
 422                                        LyXFont const & font,
 423                                        LyXLayout const & style)
 424 {
 425         if (style.pass_thru)
 426                 return;
 427
 428         if (column > lyxrc.ascii_linelen
 429             && i
 430             && getChar(i - 1) != ' '
 431             && (i < size() - 1)
 432             // same in FreeSpacing mode
 433             && !owner_->isFreeSpacing()
 434             // In typewriter mode, we want to avoid
 435             // ! . ? : at the end of a line
 436             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 437                  && (getChar(i - 1) == '.'
 438                      || getChar(i - 1) == '?'
 439                      || getChar(i - 1) == ':'
 440                      || getChar(i - 1) == '!'))) {
 441                 os << '\n';
 442                 texrow.newline();
 443                 texrow.start(owner_->id(), i + 1);
 444                 column = 0;
 445         } else if (style.free_spacing) {
 446                 os << '~';
 447         } else {
 448                 os << ' ';
 449         }
 450 }
 451
 452
 453 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 454 {
 455         pos_type const len = str.length();
 456
 457         // is the paragraph large enough?
 458         if (pos + len > size())
 459                 return false;
 460
 461         // does the wanted text start at point?
 462         for (string::size_type i = 0; i < str.length(); ++i) {
 463                 if (str[i] != text[pos + i])
 464                         return false;
 465         }
 466
 467         // is there a font change in middle of the word?
 468         FontList::const_iterator cit = fontlist.begin();
 469         FontList::const_iterator end = fontlist.end();
 470         for (; cit != end; ++cit) {
 471                 if (cit->pos() >= pos)
 472                         break;
 473         }
 474         if (cit != end && pos + len - 1 > cit->pos())
 475                 return false;
 476
 477         return true;
 478 }
 479
 480
 481 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const & buf,
 482                                              BufferParams const & bparams,
 483                                              ostream & os,
 484                                              TexRow & texrow,
 485                                              LatexRunParams const & runparams,
 486                                              LyXFont & font,
 487                                              LyXFont & running_font,
 488                                              LyXFont & basefont,
 489                                              LyXFont const & outerfont,
 490                                              bool & open_font,
 491                                              Change::Type & running_change,
 492                                              LyXLayout const & style,
 493                                              pos_type & i,
 494                                              unsigned int & column,
 495                                              value_type const c)
 496 {
 497         if (style.pass_thru) {
 498                 if (c != Paragraph::META_INSET) {
 499                         if (c != '\0')
 500                                 os << c;
 501                 } else {
 502                         InsetOld const * inset = owner_->getInset(i);
 503                         inset->ascii(buf, os, 0);
 504                 }
 505                 return;
 506         }
 507
 508         // Two major modes:  LaTeX or plain
 509         // Handle here those cases common to both modes
 510         // and then split to handle the two modes separately.
 511         switch (c) {
 512         case Paragraph::META_INSET: {
 513                 InsetOld * inset = owner_->getInset(i);
 514
 515                 // FIXME: remove this check
 516                 if (!inset)
 517                         break;
 518
 519                 // FIXME: move this to InsetNewline::latex
 520                 if (inset->lyxCode() == InsetOld::NEWLINE_CODE) {
 521                         // newlines are handled differently here than
 522                         // the default in simpleTeXSpecialChars().
 523                         if (!style.newline_allowed) {
 524                                 os << '\n';
 525                         } else {
 526                                 if (open_font) {
 527                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 528                                         open_font = false;
 529                                 }
 530                                 basefont = owner_->getLayoutFont(bparams, outerfont);
 531                                 running_font = basefont;
 532
 533                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 534                                         os << '~';
 535
 536                                 if (runparams.moving_arg)
 537                                         os << "\\protect ";
 538
 539                                 os << "\\\\\n";
 540                         }
 541                         texrow.newline();
 542                         texrow.start(owner_->id(), i + 1);
 543                         column = 0;
 544                         break;
 545                 }
 546
 547                 if (inset->isTextInset()) {
 548                         column += Changes::latexMarkChange(os, running_change,
 549                                 Change::UNCHANGED);
 550                         running_change = Change::UNCHANGED;
 551                 }
 552
 553                 bool close = false;
 554                 int const len = os.tellp();
 555                 //ostream::pos_type const len = os.tellp();
 556                 if ((inset->lyxCode() == InsetOld::GRAPHICS_CODE
 557                      || inset->lyxCode() == InsetOld::MATH_CODE
 558                      || inset->lyxCode() == InsetOld::URL_CODE)
 559                     && running_font.isRightToLeft()) {
 560                         os << "\\L{";
 561                         close = true;
 562                 }
 563
 564 #ifdef WITH_WARNINGS
 565 #warning Bug: we can have an empty font change here!
 566 // if there has just been a font change, we are going to close it
 567 // right now, which means stupid latex code like \textsf{}. AFAIK,
 568 // this does not harm dvi output. A minor bug, thus (JMarc)
 569 #endif
 570                 // some insets cannot be inside a font change command
 571                 if (open_font && inset->noFontChange()) {
 572                         column +=running_font.
 573                                 latexWriteEndChanges(os,
 574                                                      basefont,
 575                                                      basefont);
 576                         open_font = false;
 577                         basefont = owner_->getLayoutFont(bparams, outerfont);
 578                         running_font = basefont;
 579                 }
 580
 581                 int tmp = inset->latex(buf, os, runparams);
 582
 583                 if (close)
 584                         os << '}';
 585
 586                 if (tmp) {
 587                         for (int j = 0; j < tmp; ++j) {
 588                                 texrow.newline();
 589                         }
 590                         texrow.start(owner_->id(), i + 1);
 591                         column = 0;
 592                 } else {
 593                         column += int(os.tellp()) - len;
 594                 }
 595         }
 596         break;
 597
 598         default:
 599                 // And now for the special cases within each mode
 600
 601                 switch (c) {
 602                 case '\\':
 603                         os << "\\textbackslash{}";
 604                         column += 15;
 605                         break;
 606
 607                 case '±': case '²': case '³':
 608                 case '×': case '÷': case '¹':
 609                 case '¬': case 'µ':
 610                         if ((bparams.inputenc == "latin1" ||
 611                              bparams.inputenc == "latin9") ||
 612                             (bparams.inputenc == "auto" &&
 613                              (font.language()->encoding()->LatexName()
 614                               == "latin1" ||
 615                               font.language()->encoding()->LatexName()
 616                               == "latin9"))) {
 617                                 os << "\\ensuremath{"
 618                                    << c
 619                                    << '}';
 620                                 column += 13;
 621                         } else {
 622                                 os << c;
 623                         }
 624                         break;
 625
 626                 case '|': case '<': case '>':
 627                         // In T1 encoding, these characters exist
 628                         if (lyxrc.fontenc == "T1") {
 629                                 os << c;
 630                                 //... but we should avoid ligatures
 631                                 if ((c == '>' || c == '<')
 632                                     && i <= size() - 2
 633                                     && getChar(i + 1) == c) {
 634                                         //os << "\\textcompwordmark{}";
 635                                         // Jean-Marc, have a look at
 636                                         // this. I think this works
 637                                         // equally well:
 638                                         os << "\\,{}";
 639                                         // Lgb
 640                                         column += 19;
 641                                 }
 642                                 break;
 643                         }
 644                         // Typewriter font also has them
 645                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 646                                 os << c;
 647                                 break;
 648                         }
 649                         // Otherwise, we use what LaTeX
 650                         // provides us.
 651                         switch (c) {
 652                         case '<':
 653                                 os << "\\textless{}";
 654                                 column += 10;
 655                                 break;
 656                         case '>':
 657                                 os << "\\textgreater{}";
 658                                 column += 13;
 659                                 break;
 660                         case '|':
 661                                 os << "\\textbar{}";
 662                                 column += 9;
 663                                 break;
 664                         }
 665                         break;
 666
 667                 case '-': // "--" in Typewriter mode -> "-{}-"
 668                         if (i <= size() - 2
 669                             && getChar(i + 1) == '-'
 670                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 671                                 os << "-{}";
 672                                 column += 2;
 673                         } else {
 674                                 os << '-';
 675                         }
 676                         break;
 677
 678                 case '\"':
 679                         os << "\\char`\\\"{}";
 680                         column += 9;
 681                         break;
 682
 683                 case '£':
 684                         if (bparams.inputenc == "default") {
 685                                 os << "\\pounds{}";
 686                                 column += 8;
 687                         } else {
 688                                 os << c;
 689                         }
 690                         break;
 691
 692                 case '$': case '&':
 693                 case '%': case '#': case '{':
 694                 case '}': case '_':
 695                         os << '\\' << c;
 696                         column += 1;
 697                         break;
 698
 699                 case '~':
 700                         os << "\\textasciitilde{}";
 701                         column += 16;
 702                         break;
 703
 704                 case '^':
 705                         os << "\\textasciicircum{}";
 706                         column += 17;
 707                         break;
 708
 709                 case '*': case '[': case ']':
 710                         // avoid being mistaken for optional arguments
 711                         os << '{' << c << '}';
 712                         column += 2;
 713                         break;
 714
 715                 case ' ':
 716                         // Blanks are printed before font switching.
 717                         // Sure? I am not! (try nice-latex)
 718                         // I am sure it's correct. LyX might be smarter
 719                         // in the future, but for now, nothing wrong is
 720                         // written. (Asger)
 721                         break;
 722
 723                 default:
 724
 725                         // I assume this is hack treating typewriter as verbatim
 726                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 727                                 if (c != '\0') {
 728                                         os << c;
 729                                 }
 730                                 break;
 731                         }
 732
 733                         // LyX, LaTeX etc.
 734
 735                         // FIXME: if we have "LaTeX" with a font
 736                         // change in the middle (before the 'T', then
 737                         // the "TeX" part is still special cased.
 738                         // Really we should only operate this on
 739                         // "words" for some definition of word
 740
 741                         size_t pnr = 0;
 742
 743                         for (; pnr < phrases_nr; ++pnr) {
 744                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 745                                         os << special_phrases[pnr].macro;
 746                                         i += special_phrases[pnr].phrase.length() - 1;
 747                                         column += special_phrases[pnr].macro.length() - 1;
 748                                         break;
 749                                 }
 750                         }
 751
 752                         if (pnr == phrases_nr && c != '\0') {
 753                                 os << c;
 754                         }
 755                         break;
 756                 }
 757         }
 758 }
 759
 760
 761 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 762                                 LyXLayout const & layout) const
 763 {
 764         BufferParams const & bparams = features.bufferParams();
 765
 766         // check the params.
 767         if (params.lineTop() || params.lineBottom())
 768                 features.require("lyxline");
 769         if (!params.spacing().isDefault())
 770                 features.require("setspace");
 771
 772         // then the layouts
 773         features.useLayout(layout.name());
 774
 775         // then the fonts
 776         Language const * doc_language = bparams.language;
 777
 778         FontList::const_iterator fcit = fontlist.begin();
 779         FontList::const_iterator fend = fontlist.end();
 780         for (; fcit != fend; ++fcit) {
 781                 if (fcit->font().noun() == LyXFont::ON) {
 782                         lyxerr[Debug::LATEX] << "font.noun: "
 783                                              << fcit->font().noun()
 784                                              << endl;
 785                         features.require("noun");
 786                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 787                                              << fcit->font().stateText(0)
 788                                              << endl;
 789                 }
 790                 switch (fcit->font().color()) {
 791                 case LColor::none:
 792                 case LColor::inherit:
 793                 case LColor::ignore:
 794                         // probably we should put here all interface colors used for
 795                         // font displaying! For now I just add this ones I know of (Jug)
 796                 case LColor::latex:
 797                 case LColor::note:
 798                         break;
 799                 default:
 800                         features.require("color");
 801                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 802                                              << fcit->font().stateText(0)
 803                                              << endl;
 804                 }
 805
 806                 Language const * language = fcit->font().language();
 807                 if (language->babel() != doc_language->babel() &&
 808                     language != ignore_language &&
 809                     language != latex_language)
 810                 {
 811                         features.useLanguage(language);
 812                         lyxerr[Debug::LATEX] << "Found language "
 813                                              << language->babel() << endl;
 814                 }
 815         }
 816
 817         if (!params.leftIndent().zero())
 818                 features.require("ParagraphLeftIndent");
 819
 820         // then the insets
 821         InsetList::iterator icit = owner_->insetlist.begin();
 822         InsetList::iterator iend = owner_->insetlist.end();
 823         for (; icit != iend; ++icit) {
 824                 if (icit->inset) {
 825                         icit->inset->validate(features);
 826                         if (layout.needprotect &&
 827                             icit->inset->lyxCode() == InsetOld::FOOT_CODE)
 828                                 features.require("NeedLyXFootnoteCode");
 829                 }
 830         }
 831
 832         // then the contents
 833         for (pos_type i = 0; i < size() ; ++i) {
 834                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 835                         if (!special_phrases[pnr].builtin
 836                             && isTextAt(special_phrases[pnr].phrase, i)) {
 837                                 features.require(special_phrases[pnr].phrase);
 838                                 break;
 839                         }
 840                 }
 841         }
 842 }