src/paragraph_pimpl.C

   1 /**
   2  * \file paragraph_pimpl.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Jean-Marc Lasgouttes
   8  * \author John Levon
   9  * \author André Pönitz
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "paragraph_pimpl.h"
  17 #include "paragraph.h"
  18
  19 #include "bufferparams.h"
  20 #include "debug.h"
  21 #include "encoding.h"
  22 #include "language.h"
  23 #include "LaTeXFeatures.h"
  24 #include "LColor.h"
  25 #include "lyxlength.h"
  26 #include "lyxrc.h"
  27 #include "outputparams.h"
  28 #include "texrow.h"
  29
  30 #include <boost/next_prior.hpp>
  31
  32 using lyx::docstring;
  33 using lyx::odocstream;
  34 using lyx::pos_type;
  35
  36 using std::endl;
  37 using std::upper_bound;
  38 using std::lower_bound;
  39 using std::string;
  40
  41
  42 // Initialization of the counter for the paragraph id's,
  43 unsigned int Paragraph::Pimpl::paragraph_id = 0;
  44
  45 namespace {
  46
  47 struct special_phrase {
  48         string phrase;
  49         docstring macro;
  50         bool builtin;
  51 };
  52
  53 special_phrase const special_phrases[] = {
  54         { "LyX", lyx::from_ascii("\\LyX{}"), false },
  55         { "TeX", lyx::from_ascii("\\TeX{}"), true },
  56         { "LaTeX2e", lyx::from_ascii("\\LaTeXe{}"), true },
  57         { "LaTeX", lyx::from_ascii("\\LaTeX{}"), true },
  58 };
  59
  60 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
  61
  62 } // namespace anon
  63
  64
  65 Paragraph::Pimpl::Pimpl(Paragraph * owner)
  66         : owner_(owner)
  67 {
  68         inset_owner = 0;
  69         id_ = paragraph_id++;
  70 }
  71
  72
  73 Paragraph::Pimpl::Pimpl(Pimpl const & p, Paragraph * owner)
  74         : params(p.params), owner_(owner)
  75 {
  76         inset_owner = p.inset_owner;
  77         fontlist = p.fontlist;
  78         id_ = paragraph_id++;
  79
  80         if (p.tracking())
  81                 changes_.reset(new Changes(*p.changes_.get()));
  82 }
  83
  84
  85 void Paragraph::Pimpl::setContentsFromPar(Paragraph const & par)
  86 {
  87         owner_->text_ = par.text_;
  88         if (par.pimpl_->tracking()) {
  89                 changes_.reset(new Changes(*(par.pimpl_->changes_.get())));
  90         }
  91 }
  92
  93
  94 bool Paragraph::Pimpl::isChanged(pos_type start, pos_type end) const
  95 {
  96         // FIXME: change tracking (MG)
  97         if (!tracking())
  98                 return false;
  99
 100         return changes_->isChange(start, end);
 101 }
 102
 103
 104 void Paragraph::Pimpl::setChange(Change const & change)
 105 {
 106         // FIXME: change tracking (MG)
 107         // changes_.set(change, 0, size());
 108
 109         if (change.type == Change::UNCHANGED) { // only for UNCHANGED ???
 110                 for (pos_type i = 0; i < size(); ++i) {
 111                         if (owner_->isInset(i)) {
 112                                 // FIXME: change tracking (MG)
 113                                 // owner_->getInset(i)->setChange(change);
 114                         }
 115                 }
 116         }
 117 }
 118
 119
 120 void Paragraph::Pimpl::setChange(pos_type pos, Change const & change)
 121 {
 122         if (!tracking())
 123                 return;
 124
 125         changes_->set(change, pos);
 126 }
 127
 128
 129 Change const Paragraph::Pimpl::lookupChange(pos_type pos) const
 130 {
 131         if (!tracking())
 132                 return Change(Change::UNCHANGED);
 133
 134         return changes_->lookup(pos);
 135 }
 136
 137
 138 void Paragraph::Pimpl::acceptChange(pos_type start, pos_type end)
 139 {
 140         if (!tracking())
 141                 return;
 142
 143         if (!size()) {
 144                 changes_.reset(new Changes(Change::UNCHANGED));
 145                 return;
 146         }
 147
 148         lyxerr[Debug::CHANGES] << "acceptchange" << endl;
 149         pos_type i = start;
 150
 151         for (; i < end; ++i) {
 152                 switch (lookupChange(i).type) {
 153                         case Change::UNCHANGED:
 154                                 break;
 155
 156                         case Change::INSERTED:
 157                                 changes_->set(Change::UNCHANGED, i);
 158                                 break;
 159
 160                         case Change::DELETED:
 161                                 // Suppress access to nonexistent
 162                                 // "end-of-paragraph char":
 163                                 if (i < size()) {
 164                                         eraseIntern(i);
 165                                         changes_->erase(i);
 166                                         --end;
 167                                         --i;
 168                                 }
 169                                 break;
 170                 }
 171         }
 172
 173         lyxerr[Debug::CHANGES] << "endacceptchange" << endl;
 174         changes_->reset(Change::UNCHANGED);
 175 }
 176
 177
 178 void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
 179 {
 180         if (!tracking())
 181                 return;
 182
 183         if (!size()) {
 184                 changes_.reset(new Changes(Change::UNCHANGED));
 185                 return;
 186         }
 187
 188         pos_type i = start;
 189
 190         for (; i < end; ++i) {
 191                 switch (lookupChange(i).type) {
 192                         case Change::UNCHANGED:
 193                                 break;
 194
 195                         case Change::INSERTED:
 196                                 if (i < size()) {
 197                                         eraseIntern(i);
 198                                         changes_->erase(i);
 199                                         --end;
 200                                         --i;
 201                                 }
 202                                 break;
 203
 204                         case Change::DELETED:
 205                                 changes_->set(Change::UNCHANGED, i);
 206                                 // No real char at position size():
 207                                 if (i < size() && owner_->isInset(i))
 208                                         owner_->getInset(i)->markErased(false);
 209                                 break;
 210                 }
 211         }
 212         changes_->reset(Change::UNCHANGED);
 213 }
 214
 215
 216 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 217 {
 218         return owner_->getChar(pos);
 219 }
 220
 221
 222 void Paragraph::Pimpl::insertChar(pos_type pos, value_type c, Change const & change)
 223 {
 224         BOOST_ASSERT(pos <= size());
 225
 226         if (tracking()) {
 227                 changes_->record(change, pos);
 228         }
 229
 230         // This is actually very common when parsing buffers (and
 231         // maybe inserting ascii text)
 232         if (pos == size()) {
 233                 // when appending characters, no need to update tables
 234                 owner_->text_.push_back(c);
 235                 return;
 236         }
 237
 238         owner_->text_.insert(owner_->text_.begin() + pos, c);
 239
 240         // Update the font table.
 241         FontTable search_font(pos, LyXFont());
 242         for (FontList::iterator it = lower_bound(fontlist.begin(),
 243                                                       fontlist.end(),
 244                                                       search_font, matchFT());
 245              it != fontlist.end(); ++it)
 246         {
 247                 it->pos(it->pos() + 1);
 248         }
 249
 250         // Update the insets
 251         owner_->insetlist.increasePosAfterPos(pos);
 252 }
 253
 254
 255 void Paragraph::Pimpl::insertInset(pos_type pos,
 256                                    InsetBase * inset, Change const & change)
 257 {
 258         BOOST_ASSERT(inset);
 259         BOOST_ASSERT(pos <= size());
 260
 261         insertChar(pos, META_INSET, change);
 262         BOOST_ASSERT(owner_->text_[pos] == META_INSET);
 263
 264         // Add a new entry in the insetlist.
 265         owner_->insetlist.insert(inset, pos);
 266 }
 267
 268
 269 void Paragraph::Pimpl::eraseIntern(pos_type pos)
 270 {
 271         // if it is an inset, delete the inset entry
 272         if (owner_->text_[pos] == Paragraph::META_INSET) {
 273                 owner_->insetlist.erase(pos);
 274         }
 275
 276         owner_->text_.erase(owner_->text_.begin() + pos);
 277
 278         // Erase entries in the tables.
 279         FontTable search_font(pos, LyXFont());
 280
 281         FontList::iterator it =
 282                 lower_bound(fontlist.begin(),
 283                             fontlist.end(),
 284                             search_font, matchFT());
 285         if (it != fontlist.end() && it->pos() == pos &&
 286             (pos == 0 ||
 287              (it != fontlist.begin()
 288               && boost::prior(it)->pos() == pos - 1))) {
 289                 // If it is a multi-character font
 290                 // entry, we just make it smaller
 291                 // (see update below), otherwise we
 292                 // should delete it.
 293                 unsigned int const i = it - fontlist.begin();
 294                 fontlist.erase(fontlist.begin() + i);
 295                 it = fontlist.begin() + i;
 296                 if (i > 0 && i < fontlist.size() &&
 297                     fontlist[i - 1].font() == fontlist[i].font()) {
 298                         fontlist.erase(fontlist.begin() + i - 1);
 299                         it = fontlist.begin() + i - 1;
 300                 }
 301         }
 302
 303         // Update all other entries.
 304         FontList::iterator fend = fontlist.end();
 305         for (; it != fend; ++it)
 306                 it->pos(it->pos() - 1);
 307
 308         // Update the insetlist.
 309         owner_->insetlist.decreasePosAfterPos(pos);
 310 }
 311
 312
 313 bool Paragraph::Pimpl::erase(pos_type pos)
 314 {
 315         BOOST_ASSERT(pos <= size());
 316
 317         if (tracking()) {
 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                                 owner_->getInset(pos)->markErased(true);
 325                         return false;
 326                 }
 327         }
 328
 329         // Don't physically access nonexistent end-of-paragraph char
 330         if (pos < size()) {
 331                 eraseIntern(pos);
 332                 return true;
 333         }
 334
 335         return false;
 336 }
 337
 338
 339 int Paragraph::Pimpl::erase(pos_type start, pos_type end)
 340 {
 341         pos_type i = start;
 342         for (pos_type count = end - start; count; --count) {
 343                 if (!erase(i))
 344                         ++i;
 345         }
 346         return end - i;
 347 }
 348
 349
 350 void Paragraph::Pimpl::simpleTeXBlanks(odocstream & os, TexRow & texrow,
 351                                        pos_type const i,
 352                                        unsigned int & column,
 353                                        LyXFont const & font,
 354                                        LyXLayout const & style)
 355 {
 356         if (style.pass_thru)
 357                 return;
 358
 359         if (column > lyxrc.ascii_linelen
 360             && i
 361             && getChar(i - 1) != ' '
 362             && (i < size() - 1)
 363             // same in FreeSpacing mode
 364             && !owner_->isFreeSpacing()
 365             // In typewriter mode, we want to avoid
 366             // ! . ? : at the end of a line
 367             && !(font.family() == LyXFont::TYPEWRITER_FAMILY
 368                  && (getChar(i - 1) == '.'
 369                      || getChar(i - 1) == '?'
 370                      || getChar(i - 1) == ':'
 371                      || getChar(i - 1) == '!'))) {
 372                 os << '\n';
 373                 texrow.newline();
 374                 texrow.start(owner_->id(), i + 1);
 375                 column = 0;
 376         } else if (style.free_spacing) {
 377                 os << '~';
 378         } else {
 379                 os << ' ';
 380         }
 381 }
 382
 383
 384 bool Paragraph::Pimpl::isTextAt(string const & str, pos_type pos) const
 385 {
 386         pos_type const len = str.length();
 387
 388         // is the paragraph large enough?
 389         if (pos + len > size())
 390                 return false;
 391
 392         // does the wanted text start at point?
 393         for (string::size_type i = 0; i < str.length(); ++i) {
 394                 if (str[i] != owner_->text_[pos + i])
 395                         return false;
 396         }
 397
 398         // is there a font change in middle of the word?
 399         FontList::const_iterator cit = fontlist.begin();
 400         FontList::const_iterator end = fontlist.end();
 401         for (; cit != end; ++cit) {
 402                 if (cit->pos() >= pos)
 403                         break;
 404         }
 405         if (cit != end && pos + len - 1 > cit->pos())
 406                 return false;
 407
 408         return true;
 409 }
 410
 411
 412 void Paragraph::Pimpl::simpleTeXSpecialChars(Buffer const & buf,
 413                                              BufferParams const & bparams,
 414                                              odocstream & os,
 415                                              TexRow & texrow,
 416                                              OutputParams const & runparams,
 417                                              LyXFont & font,
 418                                              LyXFont & running_font,
 419                                              LyXFont & basefont,
 420                                              LyXFont const & outerfont,
 421                                              bool & open_font,
 422                                              Change::Type & running_change,
 423                                              LyXLayout const & style,
 424                                              pos_type & i,
 425                                              unsigned int & column,
 426                                              value_type const c)
 427 {
 428         if (style.pass_thru) {
 429                 if (c != Paragraph::META_INSET) {
 430                         if (c != '\0')
 431                                 os.put(c);
 432                 } else
 433                         owner_->getInset(i)->plaintext(buf, os, runparams);
 434                 return;
 435         }
 436
 437         // Two major modes:  LaTeX or plain
 438         // Handle here those cases common to both modes
 439         // and then split to handle the two modes separately.
 440         switch (c) {
 441         case Paragraph::META_INSET: {
 442                 InsetBase * inset = owner_->getInset(i);
 443
 444                 // FIXME: remove this check
 445                 if (!inset)
 446                         break;
 447
 448                 // FIXME: move this to InsetNewline::latex
 449                 if (inset->lyxCode() == InsetBase::NEWLINE_CODE) {
 450                         // newlines are handled differently here than
 451                         // the default in simpleTeXSpecialChars().
 452                         if (!style.newline_allowed) {
 453                                 os << '\n';
 454                         } else {
 455                                 if (open_font) {
 456                                         column += running_font.latexWriteEndChanges(os, basefont, basefont);
 457                                         open_font = false;
 458                                 }
 459                                 basefont = owner_->getLayoutFont(bparams, outerfont);
 460                                 running_font = basefont;
 461
 462                                 if (font.family() == LyXFont::TYPEWRITER_FAMILY)
 463                                         os << '~';
 464
 465                                 if (runparams.moving_arg)
 466                                         os << "\\protect ";
 467
 468                                 os << "\\\\\n";
 469                         }
 470                         texrow.newline();
 471                         texrow.start(owner_->id(), i + 1);
 472                         column = 0;
 473                         break;
 474                 }
 475
 476                 // output change tracking marks only if desired,
 477                 // if dvipost is installed,
 478                 // and with dvi/ps (other formats don't work)
 479                 LaTeXFeatures features(buf, bparams, runparams);
 480                 bool const output = bparams.outputChanges
 481                         && runparams.flavor == OutputParams::LATEX
 482                         && features.isAvailable("dvipost");
 483
 484                 if (inset->canTrackChanges()) {
 485                         column += Changes::latexMarkChange(os, running_change,
 486                                 Change::UNCHANGED, output);
 487                         running_change = Change::UNCHANGED;
 488                 }
 489
 490                 bool close = false;
 491                 odocstream::pos_type const len = os.tellp();
 492
 493                 if ((inset->lyxCode() == InsetBase::GRAPHICS_CODE
 494                      || inset->lyxCode() == InsetBase::MATH_CODE
 495                      || inset->lyxCode() == InsetBase::URL_CODE)
 496                     && running_font.isRightToLeft()) {
 497                         os << "\\L{";
 498                         close = true;
 499                 }
 500
 501 #ifdef WITH_WARNINGS
 502 #warning Bug: we can have an empty font change here!
 503 // if there has just been a font change, we are going to close it
 504 // right now, which means stupid latex code like \textsf{}. AFAIK,
 505 // this does not harm dvi output. A minor bug, thus (JMarc)
 506 #endif
 507                 // some insets cannot be inside a font change command
 508                 if (open_font && inset->noFontChange()) {
 509                         column +=running_font.
 510                                 latexWriteEndChanges(os,
 511                                                      basefont,
 512                                                      basefont);
 513                         open_font = false;
 514                         basefont = owner_->getLayoutFont(bparams, outerfont);
 515                         running_font = basefont;
 516                 }
 517
 518                 int tmp = inset->latex(buf, os, runparams);
 519
 520                 if (close)
 521                         os << '}';
 522
 523                 if (tmp) {
 524                         for (int j = 0; j < tmp; ++j) {
 525                                 texrow.newline();
 526                         }
 527                         texrow.start(owner_->id(), i + 1);
 528                         column = 0;
 529                 } else {
 530                         column += os.tellp() - len;
 531                 }
 532         }
 533         break;
 534
 535         default:
 536                 // And now for the special cases within each mode
 537
 538                 switch (c) {
 539                 case '\\':
 540                         os << "\\textbackslash{}";
 541                         column += 15;
 542                         break;
 543
 544                 case '±': case '²': case '³':
 545                 case '×': case '÷': case '¹':
 546                 case '¬': case 'µ':
 547                         if ((bparams.inputenc == "latin1" ||
 548                              bparams.inputenc == "latin9") ||
 549                             (bparams.inputenc == "auto" &&
 550                              (font.language()->encoding()->latexName()
 551                               == "latin1" ||
 552                               font.language()->encoding()->latexName()
 553                               == "latin9"))) {
 554                                 os << "\\ensuremath{"
 555                                    << c
 556                                    << '}';
 557                                 column += 13;
 558                         } else {
 559                                 os << c;
 560                         }
 561                         break;
 562
 563                 case '|': case '<': case '>':
 564                         // In T1 encoding, these characters exist
 565                         if (lyxrc.fontenc == "T1") {
 566                                 os << c;
 567                                 //... but we should avoid ligatures
 568                                 if ((c == '>' || c == '<')
 569                                     && i <= size() - 2
 570                                     && getChar(i + 1) == c) {
 571                                         //os << "\\textcompwordmark{}";
 572                                         // Jean-Marc, have a look at
 573                                         // this. I think this works
 574                                         // equally well:
 575                                         os << "\\,{}";
 576                                         // Lgb
 577                                         column += 19;
 578                                 }
 579                                 break;
 580                         }
 581                         // Typewriter font also has them
 582                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 583                                 os << c;
 584                                 break;
 585                         }
 586                         // Otherwise, we use what LaTeX
 587                         // provides us.
 588                         switch (c) {
 589                         case '<':
 590                                 os << "\\textless{}";
 591                                 column += 10;
 592                                 break;
 593                         case '>':
 594                                 os << "\\textgreater{}";
 595                                 column += 13;
 596                                 break;
 597                         case '|':
 598                                 os << "\\textbar{}";
 599                                 column += 9;
 600                                 break;
 601                         }
 602                         break;
 603
 604                 case '-': // "--" in Typewriter mode -> "-{}-"
 605                         if (i <= size() - 2
 606                             && getChar(i + 1) == '-'
 607                             && font.family() == LyXFont::TYPEWRITER_FAMILY) {
 608                                 os << "-{}";
 609                                 column += 2;
 610                         } else {
 611                                 os << '-';
 612                         }
 613                         break;
 614
 615                 case '\"':
 616                         os << "\\char`\\\"{}";
 617                         column += 9;
 618                         break;
 619
 620                 case '£':
 621                         if (bparams.inputenc == "default") {
 622                                 os << "\\pounds{}";
 623                                 column += 8;
 624                         } else {
 625                                 os << c;
 626                         }
 627                         break;
 628
 629                 case '$': case '&':
 630                 case '%': case '#': case '{':
 631                 case '}': case '_':
 632                         os << '\\' << c;
 633                         column += 1;
 634                         break;
 635
 636                 case '~':
 637                         os << "\\textasciitilde{}";
 638                         column += 16;
 639                         break;
 640
 641                 case '^':
 642                         os << "\\textasciicircum{}";
 643                         column += 17;
 644                         break;
 645
 646                 case '*': case '[':
 647                         // avoid being mistaken for optional arguments
 648                         os << '{' << c << '}';
 649                         column += 2;
 650                         break;
 651
 652                 case ' ':
 653                         // Blanks are printed before font switching.
 654                         // Sure? I am not! (try nice-latex)
 655                         // I am sure it's correct. LyX might be smarter
 656                         // in the future, but for now, nothing wrong is
 657                         // written. (Asger)
 658                         break;
 659
 660                 default:
 661
 662                         // I assume this is hack treating typewriter as verbatim
 663                         if (font.family() == LyXFont::TYPEWRITER_FAMILY) {
 664                                 if (c != '\0') {
 665                                         os << c;
 666                                 }
 667                                 break;
 668                         }
 669
 670                         // LyX, LaTeX etc.
 671
 672                         // FIXME: if we have "LaTeX" with a font
 673                         // change in the middle (before the 'T', then
 674                         // the "TeX" part is still special cased.
 675                         // Really we should only operate this on
 676                         // "words" for some definition of word
 677
 678                         size_t pnr = 0;
 679
 680                         for (; pnr < phrases_nr; ++pnr) {
 681                                 if (isTextAt(special_phrases[pnr].phrase, i)) {
 682                                         os << special_phrases[pnr].macro;
 683                                         i += special_phrases[pnr].phrase.length() - 1;
 684                                         column += special_phrases[pnr].macro.length() - 1;
 685                                         break;
 686                                 }
 687                         }
 688
 689                         if (pnr == phrases_nr && c != '\0') {
 690                                 os << c;
 691                         }
 692                         break;
 693                 }
 694         }
 695 }
 696
 697
 698 void Paragraph::Pimpl::validate(LaTeXFeatures & features,
 699                                 LyXLayout const & layout) const
 700 {
 701         BufferParams const & bparams = features.bufferParams();
 702
 703         // check the params.
 704         if (!params.spacing().isDefault())
 705                 features.require("setspace");
 706
 707         // then the layouts
 708         features.useLayout(layout.name());
 709
 710         // then the fonts
 711         Language const * doc_language = bparams.language;
 712
 713         FontList::const_iterator fcit = fontlist.begin();
 714         FontList::const_iterator fend = fontlist.end();
 715         for (; fcit != fend; ++fcit) {
 716                 if (fcit->font().noun() == LyXFont::ON) {
 717                         lyxerr[Debug::LATEX] << "font.noun: "
 718                                              << fcit->font().noun()
 719                                              << endl;
 720                         features.require("noun");
 721                         lyxerr[Debug::LATEX] << "Noun enabled. Font: "
 722                                              << fcit->font().stateText(0)
 723                                              << endl;
 724                 }
 725                 switch (fcit->font().color()) {
 726                 case LColor::none:
 727                 case LColor::inherit:
 728                 case LColor::ignore:
 729                         // probably we should put here all interface colors used for
 730                         // font displaying! For now I just add this ones I know of (Jug)
 731                 case LColor::latex:
 732                 case LColor::note:
 733                         break;
 734                 default:
 735                         features.require("color");
 736                         lyxerr[Debug::LATEX] << "Color enabled. Font: "
 737                                              << fcit->font().stateText(0)
 738                                              << endl;
 739                 }
 740
 741                 Language const * language = fcit->font().language();
 742                 if (language->babel() != doc_language->babel() &&
 743                     language != ignore_language &&
 744                     language != latex_language)
 745                 {
 746                         features.useLanguage(language);
 747                         lyxerr[Debug::LATEX] << "Found language "
 748                                              << language->babel() << endl;
 749                 }
 750         }
 751
 752         if (!params.leftIndent().zero())
 753                 features.require("ParagraphLeftIndent");
 754
 755         // then the insets
 756         InsetList::const_iterator icit = owner_->insetlist.begin();
 757         InsetList::const_iterator iend = owner_->insetlist.end();
 758         for (; icit != iend; ++icit) {
 759                 if (icit->inset) {
 760                         icit->inset->validate(features);
 761                         if (layout.needprotect &&
 762                             icit->inset->lyxCode() == InsetBase::FOOT_CODE)
 763                                 features.require("NeedLyXFootnoteCode");
 764                 }
 765         }
 766
 767         // then the contents
 768         for (pos_type i = 0; i < size() ; ++i) {
 769                 for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
 770                         if (!special_phrases[pnr].builtin
 771                             && isTextAt(special_phrases[pnr].phrase, i)) {
 772                                 features.require(special_phrases[pnr].phrase);
 773                                 break;
 774                         }
 775                 }
 776         }
 777 }