]> git.lyx.org Git - features.git/blobdiff - src/output_docbook.cpp
DocBook: streamline code to handle abstracts.
[features.git] / src / output_docbook.cpp
index 12c00899eaab87d3f3f6df537448ea4dd286a5ac..38bcf05d3862d6f222f3397bd7005dd1995a522e 100644 (file)
@@ -225,7 +225,7 @@ void closeBlockTag(XMLStream & xs, const std::string & tag)
 
 void openTag(XMLStream & xs, const std::string & tag, const std::string & attr, const std::string & tagtype)
 {
-       if (tag.empty() || tag == "NONE")
+       if (tag.empty() || tag == "NONE") // Common check to be performed elsewhere, if it was not here.
                return;
 
        if (tag == "para" || tagtype == "paragraph") // Special case for <para>: always considered as a paragraph.
@@ -275,7 +275,7 @@ void openParTag(XMLStream & xs, const Paragraph * par, const Paragraph * prevpar
                Layout const & prevlay = prevpar->layout();
                if (prevlay.docbookwrappertag() != "NONE") {
                        openWrapper = prevlay.docbookwrappertag() == lay.docbookwrappertag()
-                                       && !lay.docbookwrappermergewithprevious();
+                                     && !lay.docbookwrappermergewithprevious();
                }
        }
 
@@ -308,32 +308,8 @@ void closeParTag(XMLStream & xs, Paragraph const * par, Paragraph const * nextpa
        if (nextpar != nullptr) {
                Layout const & nextlay = nextpar->layout();
                if (nextlay.docbookwrappertag() != "NONE") {
-                       if (nextpar->getDepth() == par->getDepth()) {
-                               // Same depth: the basic condition applies.
-                               closeWrapper = nextlay.docbookwrappertag() == lay.docbookwrappertag()
-                                              && !nextlay.docbookwrappermergewithprevious();
-                       } else if (nextpar->getDepth() > par->getDepth()) {
-                               // The next paragraph is deeper: no need to close the wrapper, only to open it (cf. openParTag).
-                               closeWrapper = 0;
-                       } else {
-                               // This paragraph is deeper than the next one: close the wrapper,
-                               // disregarding docbookwrappermergewithprevious.
-                               // Hypothesis: nextlay.docbookwrappertag() == lay.docbookwrappertag(). TODO: THIS IS WRONG! Loop back until a layout with the right depth is found?
-                               closeWrapper = 1L + (long long) par->getDepth() - (long long) nextpar->getDepth(); // > 0, as nextpar->getDepth() < par->getDepth()
-                       }
-               } else {
-                       if (nextpar->getDepth() == par->getDepth()) {
-                               // This is not wrapped: this must be the rest of the item, still within the wrapper.
-                               closeWrapper = 1;
-                       } else if (nextpar->getDepth() > par->getDepth()) {
-                               // The next paragraph is deeper: no need to close the wrapper, only to open it (cf. openParTag).
-                               closeWrapper = 0;
-                       } else {
-                               // This paragraph is deeper than the next one: close the wrapper,
-                               // disregarding docbookwrappermergewithprevious.
-                               // Hypothesis: nextlay.docbookwrappertag() == lay.docbookwrappertag(). TODO: THIS IS WRONG! Loop back until a layout with the right depth is found?
-                               closeWrapper = 1L + (long long) par->getDepth() - (long long) nextpar->getDepth(); // > 0, as nextpar->getDepth() < par->getDepth()
-                       }
+                       closeWrapper = nextlay.docbookwrappertag() == lay.docbookwrappertag()
+                                      && !nextlay.docbookwrappermergewithprevious();
                }
        }
 
@@ -370,12 +346,11 @@ void closeItemTag(XMLStream & xs, Layout const & lay)
 }
 
 
-void makeAny(
-               Text const &,
-               Buffer const &,
-               XMLStream &,
-               OutputParams const &,
-               ParagraphList::const_iterator);
+ParagraphList::const_iterator makeAny(Text const &,
+                                             Buffer const &,
+                                             XMLStream &,
+                                             OutputParams const &,
+                                             ParagraphList::const_iterator);
 
 
 void makeBibliography(
@@ -471,10 +446,16 @@ void makeParagraph(
                        special_case = true;
        }
 
+       size_t nInsets = std::distance(par->insetList().begin(), par->insetList().end());
+
        // Plain layouts must be ignored.
-       if (!special_case && buf.params().documentClass().isPlainLayout(par->layout()) && !runparams.docbook_force_pars)
-               special_case = true;
-       // TODO: Could get rid of this with a DocBook equivalent to htmlisblock?
+       special_case |= buf.params().documentClass().isPlainLayout(par->layout()) && !runparams.docbook_force_pars;
+       // Equations do not deserve their own paragraph (DocBook allows them outside paragraphs).
+       special_case |= nInsets == par->size() && std::all_of(par->insetList().begin(), par->insetList().end(), [](InsetList::Element inset) {
+               return inset.inset && inset.inset->asInsetMath();
+       });
+
+       // TODO: Could get rid of this with a DocBook equivalent to htmlisblock? Not for all cases, unfortunately... See above for those that have been determined not to be allowable for this potential refactoring.
        if (!special_case && par->size() == 1 && par->getInset(0)) {
                Inset const * firstInset = par->getInset(0);
 
@@ -485,10 +466,6 @@ void makeParagraph(
                if (!special_case && firstInset->asInsetCommand())
                        special_case = firstInset->asInsetCommand()->params().getCmdName() == "bibtex";
 
-               // Equations do not deserve their own paragraph (DocBook allows them outside paragraphs).
-               if (!special_case && firstInset->asInsetMath())
-                       special_case = true;
-
                // ERTs are in comments, not paragraphs.
                if (!special_case && firstInset->lyxCode() == lyx::ERT_CODE)
                        special_case = true;
@@ -565,9 +542,7 @@ void makeEnvironment(Text const &text,
                                // Usual cases: maybe there is something specified at the layout level. Highly unlikely, though.
                                docstring const lbl = par->params().labelString();
 
-                               if (lbl.empty()) {
-                                       xs << xml::CR();
-                               } else {
+                               if (!lbl.empty()) {
                                        openLabelTag(xs, style);
                                        xs << lbl;
                                        closeLabelTag(xs, style);
@@ -629,7 +604,6 @@ ParagraphList::const_iterator findEndOfEnvironment(
                ParagraphList::const_iterator const & pend)
 {
        // Copy-paste from XHTML. Should be factored out at some point...
-
        ParagraphList::const_iterator p = pstart;
        Layout const & bstyle = p->layout();
        size_t const depth = p->params().depth();
@@ -663,94 +637,84 @@ ParagraphList::const_iterator makeListEnvironment(Text const &text,
                                                                                                  Buffer const &buf,
                                                          XMLStream &xs,
                                                          OutputParams const &runparams,
-                                                         ParagraphList::const_iterator const & par)
->>>>>>> be6480e59c... DocBook: same refactoring for docbookSimpleAllParagraphs.
+                                                         ParagraphList::const_iterator const & begin)
 {
+       auto par = begin;
        auto const end = text.paragraphs().end();
+       auto const envend = findEndOfEnvironment(par, end);
 
-       // Output the opening tag for this environment, but only if it has not been previously opened (condition
-       // implemented in openParTag).
-       auto prevpar = text.paragraphs().getParagraphBefore(par);
-       openParTag(xs, &*par, prevpar); // TODO: switch in layout for par/block?
+       // Output the opening tag for this environment.
+       Layout const & envstyle = par->layout();
+       openTag(xs, envstyle.docbookwrappertag(), envstyle.docbookwrapperattr(), envstyle.docbookwrappertagtype());
+       openTag(xs, envstyle.docbooktag(), envstyle.docbookattr(), envstyle.docbooktagtype());
 
-       // Generate the contents of this environment. There is a special case if this is like some environment.
-       Layout const & style = par->layout();
-       if (style.latextype == LATEX_COMMAND) {
-               // Nothing to do (otherwise, infinite loops).
-       } else if (style.latextype == LATEX_ENVIRONMENT ||
-                       style.latextype == LATEX_LIST_ENVIRONMENT ||
-                       style.latextype == LATEX_ITEM_ENVIRONMENT) {
-               // Open a wrapper tag if needed.
-               if (style.docbookitemwrappertag() != "NONE")
-                       openTag(xs, style.docbookitemwrappertag(), style.docbookitemwrapperattr(), style.docbookitemwrappertagtype());
+       // Handle the content of the list environment, item by item.
+       while (par != envend) {
+               Layout const & style = par->layout();
+
+               // Open the item wrapper.
+               openTag(xs, style.docbookitemwrappertag(), style.docbookitemwrapperattr(), style.docbookitemwrappertagtype());
 
                // Generate the label, if need be. If it is taken from the text, sep != 0 and corresponds to the first
                // character after the label.
                pos_type sep = 0;
                if (style.labeltype != LABEL_NO_LABEL && style.docbookitemlabeltag() != "NONE") {
-                       // At least one condition must be met:
-                       //  - this environment is not a list
-                       //  - if this is a list, the label must not be manual (i.e. it must be taken from the layout)
-                       if (style.latextype != LATEX_LIST_ENVIRONMENT || style.labeltype != LABEL_MANUAL) {
+                       if (style.labeltype == LABEL_MANUAL) {
+                               // Only variablelist gets here (or similar items defined as an extension in the layout).
+                               openLabelTag(xs, style);
+                               sep = 1 + par->firstWordDocBook(xs, runparams);
+                               closeLabelTag(xs, style);
+                       } else {
                                // Usual cases: maybe there is something specified at the layout level. Highly unlikely, though.
                                docstring const lbl = par->params().labelString();
 
-                               if (lbl.empty()) {
-                                       xs << xml::CR();
-                               } else {
+                               if (!lbl.empty()) {
                                        openLabelTag(xs, style);
                                        xs << lbl;
                                        closeLabelTag(xs, style);
                                }
-                       } else {
-                               // Only variablelist gets here (or similar items defined as an extension in the layout).
-                               openLabelTag(xs, style);
-                               sep = par->firstWordDocBook(xs, runparams);
-                               closeLabelTag(xs, style);
                        }
                }
 
-               // Maybe the item is completely empty, i.e. if the first word ends at the end of the current paragraph
-               // AND if the next paragraph doesn't have the same depth (if there is such a paragraph).
-               // Common case: there is only the first word on the line, but there is a nested list instead
-               // of more text.
-               bool emptyItem = false;
-               if (sep == par->size()) { // If the separator is already at the end of this paragraph...
-                       auto next_par = par;
-                       ++next_par;
-                       if (next_par == text.paragraphs().end()) // There is no next paragraph.
-                               emptyItem = true;
-                       else // There is a next paragraph: check depth.
-                               emptyItem = par->params().depth() >= next_par->params().depth();
-               }
-
-               if (emptyItem) {
-                       // Avoid having an empty item, this is not valid DocBook. A single character is enough to force
-                       // generation of a full <para>.
-                       // TODO: this always worked only by magic...
-                       xs << ' ';
-               } else {
-                       // Generate the rest of the paragraph, if need be. Open as many inner tags as necessary.
-                       auto pars = par->simpleDocBookOnePar(buf, runparams, text.outerFont(std::distance(text.paragraphs().begin(), par)), sep);
-                       auto p = pars.begin();
-                       while (true) {
-                               xs << XMLStream::ESCAPE_NONE << *p;
-                               ++p;
-                               if (p != pars.end()) {
-                                       closeTag(xs, par->layout().docbookiteminnertag(), par->layout().docbookiteminnertagtype());
-                                       openTag(xs, par->layout().docbookiteminnertag(), par->layout().docbookiteminnerattr(), par->layout().docbookiteminnertagtype());
-                               } else
-                                       break;
+               // Open the item (after the wrapper and the label).
+               openTag(xs, style.docbookitemtag(), style.docbookitemattr(), style.docbookitemtagtype());
+
+               // Generate the content of the item.
+               if (sep < par->size()) {
+                       auto pars = par->simpleDocBookOnePar(buf, runparams,
+                                                            text.outerFont(std::distance(text.paragraphs().begin(), par)), sep);
+                       for (auto &p : pars) {
+                               openTag(xs, par->layout().docbookiteminnertag(), par->layout().docbookiteminnerattr(),
+                                       par->layout().docbookiteminnertagtype());
+                               xs << XMLStream::ESCAPE_NONE << p;
+                               closeTag(xs, par->layout().docbookiteminnertag(), par->layout().docbookiteminnertagtype());
                        }
+               } else {
+                       // DocBook doesn't like emptiness.
+                       openTag(xs, par->layout().docbookiteminnertag(), par->layout().docbookiteminnerattr(),
+                               par->layout().docbookiteminnertagtype());
+                       closeTag(xs, par->layout().docbookiteminnertag(), par->layout().docbookiteminnertagtype());
                }
-       } else {
-               makeAny(text, buf, xs, runparams, par);
+
+               // If the next item is deeper, it must go entirely within this item (do it recursively).
+               // By construction, with findEndOfEnvironment, depth can only stay constant or increase, never decrease.
+               depth_type currentDepth = par->getDepth();
+               ++par;
+               while (par != envend && par->getDepth() != currentDepth)
+                       par = makeAny(text, buf, xs, runparams, par);
+               // Usually, this loop only makes one iteration, except in complex scenarios, like an item with a paragraph,
+               // a list, and another paragraph; or an item with two types of list (itemise then enumerate, for instance).
+
+               // Close the item.
+               closeTag(xs, style.docbookitemtag(), style.docbookitemtagtype());
+               closeTag(xs, style.docbookitemwrappertag(), style.docbookitemwrappertagtype());
        }
 
-       // Close the environment.
-       auto nextpar = par;
-       ++nextpar;
-       closeParTag(xs, &*par, (nextpar != end) ? &*nextpar : nullptr); // TODO: switch in layout for par/block?
+       // Close this environment in exactly the same way as it was opened.
+       closeTag(xs, envstyle.docbooktag(), envstyle.docbooktagtype());
+       closeTag(xs, envstyle.docbookwrappertag(), envstyle.docbookwrappertagtype());
+
+       return envend;
 }
 
 
@@ -791,10 +755,12 @@ ParagraphList::const_iterator makeAny(Text const &text,
                makeCommand(text, buf, xs, runparams, par);
                break;
        case LATEX_ENVIRONMENT:
+               makeEnvironment(text, buf, xs, runparams, par);
+               break;
        case LATEX_LIST_ENVIRONMENT:
        case LATEX_ITEM_ENVIRONMENT:
-               makeEnvironment(buf, xs, ourparams, text, par);
-               break;
+               // Only case when makeAny() might consume more than one paragraph.
+               return makeListEnvironment(text, buf, xs, runparams, par);
        case LATEX_PARAGRAPH:
                makeParagraph(text, buf, xs, runparams, par);
                break;
@@ -802,6 +768,14 @@ ParagraphList::const_iterator makeAny(Text const &text,
                makeBibliography(text, buf, xs, runparams, par);
                break;
        }
+       ++par;
+       return par;
+}
+
+
+bool isLayoutSectioning(Layout const & lay)
+{
+       return lay.category() == from_utf8("Sectioning");
 }
 
 
@@ -811,15 +785,16 @@ using DocBookDocumentSectioning = tuple<bool, pit_type>;
 struct DocBookInfoTag
 {
        const set<pit_type> shouldBeInInfo;
-       const set<pit_type> mustBeInInfo;
+       const set<pit_type> mustBeInInfo; // With the notable exception of the abstract!
        const set<pit_type> abstract;
+       const bool abstractLayout;
        pit_type bpit;
        pit_type epit;
 
        DocBookInfoTag(const set<pit_type> & shouldBeInInfo, const set<pit_type> & mustBeInInfo,
-                                  const set<pit_type> & abstract, pit_type bpit, pit_type epit) :
+                                  const set<pit_type> & abstract, bool abstractLayout, pit_type bpit, pit_type epit) :
                                   shouldBeInInfo(shouldBeInInfo), mustBeInInfo(mustBeInInfo), abstract(abstract),
-                                  bpit(bpit), epit(epit) {}
+                                  abstractLayout(abstractLayout), bpit(bpit), epit(epit) {}
 };
 
 
@@ -828,7 +803,7 @@ DocBookDocumentSectioning hasDocumentSectioning(ParagraphList const &paragraphs,
 
        while (bpit < epit) {
                Layout const &style = paragraphs[bpit].layout();
-               documentHasSections |= style.category() == from_utf8("Sectioning");
+               documentHasSections |= isLayoutSectioning(style);
 
                if (documentHasSections)
                        break;
@@ -852,10 +827,14 @@ bool hasOnlyNotes(Paragraph const & par)
 }
 
 
-DocBookInfoTag getParagraphsWithInfo(ParagraphList const &paragraphs, pit_type bpit, pit_type const epit) {
+DocBookInfoTag getParagraphsWithInfo(ParagraphList const &paragraphs,
+                                                                        pit_type bpit, pit_type const epit,
+                                                                        // Typically, bpit is the beginning of the document and epit the end *or* the first section.
+                                                                        bool documentHasSections) {
        set<pit_type> shouldBeInInfo;
        set<pit_type> mustBeInInfo;
-       set<pit_type> abstract;
+       set<pit_type> abstractWithLayout;
+       set<pit_type> abstractNoLayout;
 
        // Find the first non empty paragraph by mutating bpit.
        while (bpit < epit) {
@@ -866,78 +845,48 @@ DocBookInfoTag getParagraphsWithInfo(ParagraphList const &paragraphs, pit_type b
                        break;
        }
 
-       // Find the last info-like paragraph.
-       pit_type cpit = bpit;
+       // Traverse everything that might belong to <info>.
        bool hasAbstractLayout = false;
-       while (cpit < epit) {
-               // Skip paragraphs only containing one note.
+       pit_type cpit = bpit;
+       for (; cpit < epit; ++cpit) {
+               // Skip paragraphs that don't generate anything in DocBook.
                Paragraph const & par = paragraphs[cpit];
-               if (hasOnlyNotes(par)) {
-                       cpit += 1;
+               if (par.empty() || par.emptyTag() || hasOnlyNotes(par))
                        continue;
+
+               // There should never be any section here. (Just a sanity check: if this fails, this function could end up
+               // processing the whole document.)
+               if (isLayoutSectioning(par.layout())) {
+                       LYXERR0("Assertion failed: section found in potential <info> paragraphs.");
+                       break;
                }
 
-               if (par.layout().docbookabstract())
+               // If this is marked as an abstract by the layout, put it in the right set.
+               if (par.layout().docbookabstract()) {
                        hasAbstractLayout = true;
+                       abstractWithLayout.emplace(cpit);
+                       continue;
+               }
 
-               // Based on layout information, store this paragraph in one set: should be in <info>, must be.
+               // Based on layout information, store this paragraph in one set: should be in <info>, must be,
+               // or abstract ().
                Layout const &style = par.layout();
 
-               if (style.docbookininfo() == "always") {
+               if (style.docbookininfo() == "always")
                        mustBeInInfo.emplace(cpit);
-               } else if (style.docbookininfo() == "maybe") {
+               else if (style.docbookininfo() == "maybe")
                        shouldBeInInfo.emplace(cpit);
-               } else {
-                       // Hypothesis: the <info> parts should be grouped together near the beginning bpit.
-                       // There may be notes in between, but nothing else.
+               else if (!hasAbstractLayout)
+                       abstractNoLayout.emplace(cpit);
+               else // This should definitely not be in <info>.
                        break;
-               }
-               cpit += 1;
        }
-       // Now, cpit points to the last paragraph that has things that could go in <info>.
+       // Now, cpit points to the first paragraph that no more has things that could go in <info>.
        // bpit is the beginning of the <info> part.
 
-       // Go once again through the list of paragraphs to find the abstract. If there is an abstract
-       // layout, only consider it. Otherwise, an abstract is just a sequence of paragraphs with text.
-       if (hasAbstractLayout) {
-               pit_type pit = bpit;
-               while (pit < cpit) { // Don't overshoot the <info> part.
-                       if (paragraphs[pit].layout().docbookabstract())
-                               abstract.emplace(pit);
-                       pit++;
-               }
-       } else {
-               pit_type lastAbstract = epit + 1; // A nonsensical value.
-               docstring lastAbstractLayout;
-
-               pit_type pit = bpit;
-               while (pit < cpit) { // Don't overshoot the <info> part.
-                       const Paragraph & par = paragraphs.at(pit);
-                       if (!par.insetList().empty()) {
-                               for (const auto &i : par.insetList()) {
-                                       if (i.inset->getText(0) != nullptr) {
-                                               if (lastAbstract == epit + 1) {
-                                                       // First paragraph that matches the heuristic definition of abstract.
-                                                       lastAbstract = pit;
-                                                       lastAbstractLayout = par.layout().name();
-                                               } else if (pit > lastAbstract + 1 || par.layout().name() != lastAbstractLayout) {
-                                                       // This is either too far from the last abstract paragraph or doesn't
-                                                       // have the right layout name, BUT there has already been an abstract
-                                                       // in this document: done with detecting the abstract.
-                                                       goto done; // Easier to get out of two nested loops.
-                                               }
-
-                                               abstract.emplace(pit);
-                                               break;
-                                       }
-                               }
-                       }
-                       pit++;
-               }
-       }
-
-       done:
-       return DocBookInfoTag(shouldBeInInfo, mustBeInInfo, abstract, bpit, cpit);
+       return DocBookInfoTag(shouldBeInInfo, mustBeInInfo,
+                                             hasAbstractLayout ? abstractWithLayout : abstractNoLayout,
+                                             hasAbstractLayout, bpit, cpit);
 }
 
 } // end anonymous namespace
@@ -972,17 +921,9 @@ void outputDocBookInfo(
        if (hasAbstract) {
                // Generate the abstract XML into a string before further checks.
                odocstringstream os2;
-               {
-                       XMLStream xs2(os2);
-                       auto bpit = *std::min_element(info.abstract.begin(), info.abstract.end());
-                       auto epit = 1 + *std::max_element(info.abstract.begin(), info.abstract.end());
-                       // info.abstract is inclusive, epit is exclusive, hence +1 for looping.
-
-                       while (bpit < epit) {
-                               makeAny(text, buf, xs2, runparams, paragraphs.iterator_at(bpit));
-                               bpit += 1;
-                       }
-               }
+               XMLStream xs2(os2);
+               for (auto const & p : info.abstract)
+                       makeAny(text, buf, xs2, runparams, paragraphs.iterator_at(p));
 
                // Actually output the abstract if there is something to do. Don't count line feeds or spaces in this,
                // even though they must be properly output if there is some abstract.
@@ -1006,27 +947,33 @@ void outputDocBookInfo(
        }
 
        // Output the elements that should go in <info>, before and after the abstract.
-       for (auto pit : info.shouldBeInInfo) // Typically, the title: these elements are so important and ubiquitous
+       for (auto pit : info.shouldBeInInfo) // Typically, the title: these elements are so important and ubiquitous
                // that mandating a wrapper like <info> would repel users. Thus, generate them first.
                makeAny(text, buf, xs, runparams, paragraphs.iterator_at(pit));
-       }
-       for (auto pit : info.mustBeInInfo) {
+       for (auto pit : info.mustBeInInfo)
                if (info.abstract.find(pit) == info.abstract.end()) // The abstract must be in info, but is dealt with after.
                        makeAny(text, buf, xs, runparams, paragraphs.iterator_at(pit));
-       }
 
        // Always output the abstract as the last item of the <info>, as it requires special treatment (especially if
        // it contains several paragraphs that are empty).
        if (hasAbstract) {
-//             string tag = paragraphs[*info.abstract.begin()].layout().docbookforceabstracttag();
-//             if (tag == "NONE")
-//                     tag = "abstract";
-//
-//             xs << xml::StartTag(tag);
-//             xs << xml::CR();
-               xs << XMLStream::ESCAPE_NONE << abstract;
-//             xs << xml::EndTag(tag);
-//             xs << xml::CR();
+               if (info.abstractLayout) {
+                       xs << XMLStream::ESCAPE_NONE << abstract;
+                       xs << xml::CR();
+               } else {
+                       string tag = paragraphs[*info.abstract.begin()].layout().docbookforceabstracttag();
+                       if (tag == "NONE")
+                               tag = "abstract";
+
+                       if (!xs.isLastTagCR())
+                               xs << xml::CR();
+
+                       xs << xml::StartTag(tag);
+                       xs << xml::CR();
+                       xs << XMLStream::ESCAPE_NONE << abstract;
+                       xs << xml::EndTag(tag);
+                       xs << xml::CR();
+               }
        }
 
        // End the <info> tag if it was started.
@@ -1038,23 +985,6 @@ void outputDocBookInfo(
 }
 
 
-void docbookFirstParagraphs(
-               Text const &text,
-               Buffer const &buf,
-               XMLStream &xs,
-               OutputParams const &runparams,
-               pit_type epit)
-{
-       // Handle the beginning of the document, supposing it has sections.
-       // Major role: output the first <info> tag.
-
-       ParagraphList const &paragraphs = text.paragraphs();
-       pit_type bpit = runparams.par_begin;
-       DocBookInfoTag info = getParagraphsWithInfo(paragraphs, bpit, epit);
-       outputDocBookInfo(text, buf, xs, runparams, paragraphs, info);
-}
-
-
 void docbookSimpleAllParagraphs(
                Text const & text,
                Buffer const & buf,
@@ -1068,7 +998,7 @@ void docbookSimpleAllParagraphs(
        ParagraphList const &paragraphs = text.paragraphs();
        pit_type bpit = runparams.par_begin;
        pit_type const epit = runparams.par_end;
-       DocBookInfoTag info = getParagraphsWithInfo(paragraphs, bpit, epit);
+       DocBookInfoTag info = getParagraphsWithInfo(paragraphs, bpit, epit, false);
        outputDocBookInfo(text, buf, xs, runparams, paragraphs, info);
 
        // Then, the content. It starts where the <info> ends.
@@ -1103,20 +1033,24 @@ void docbookParagraphs(Text const &text,
        std::stack<std::pair<int, string>> headerLevels; // Used to determine when to open/close sections: store the depth
        // of the section and the tag that was used to open it.
 
-       // Detect whether the document contains sections. If there are no sections, there can be no automatically
-       // discovered abstract.
+       // Detect whether the document contains sections. If there are no sections, treatment is largely simplified.
+       // In particular, there can't be an abstract, unless it is manually marked.
        bool documentHasSections;
        pit_type eppit;
        tie(documentHasSections, eppit) = hasDocumentSectioning(paragraphs, bpit, epit);
 
-       if (documentHasSections) {
-               docbookFirstParagraphs(text, buf, xs, runparams, eppit);
-               bpit = eppit;
-       } else {
+       // Deal with "simple" documents, i.e. those without sections.
+       if (!documentHasSections){
                docbookSimpleAllParagraphs(text, buf, xs, runparams);
                return;
        }
 
+       // Output the first <info> tag (or just the title).
+       DocBookInfoTag info = getParagraphsWithInfo(paragraphs, bpit, eppit, true);
+       outputDocBookInfo(text, buf, xs, runparams, paragraphs, info);
+       bpit = eppit;
+
+       // Then, iterate through the paragraphs of this document.
        bool currentlyInAppendix = false;
 
        auto par = text.paragraphs().iterator_at(bpit);
@@ -1134,8 +1068,7 @@ void docbookParagraphs(Text const &text,
                Layout const &style = par->layout();
 
                // Think about adding <section> and/or </section>s.
-               const bool isLayoutSectioning = style.category() == from_utf8("Sectioning");
-               if (isLayoutSectioning) {
+               if (isLayoutSectioning(style)) {
                        int level = style.toclevel;
 
                        // Need to close a previous section if it has the same level or a higher one (close <section> if opening a <h2>
@@ -1208,7 +1141,7 @@ void docbookParagraphs(Text const &text,
                }
 
                // Generate this paragraph.
-               makeAny(text, buf, xs, ourparams, par);
+               par = makeAny(text, buf, xs, ourparams, par);
        }
 
        // If need be, close <section>s, but only at the end of the document (otherwise, dealt with at the beginning