Fix bug #12068

src/Buffer.cpp

@@ -1006,7 +1006,7 @@ int Buffer::readHeader(Lexer & lex)
 
 	params().shell_escape = theSession().shellescapeFiles().find(absFileName());
 
-	params().makeDocumentClass();
+	params().makeDocumentClass(isClone(), isInternal());
 
 	return unknown_tokens;
 }

src/BufferParams.cpp

@@ -2567,7 +2567,7 @@ LayoutFileIndex const & BufferParams::baseClassID() const
 }
 
 
-void BufferParams::makeDocumentClass(bool const clone)
+void BufferParams::makeDocumentClass(bool clone, bool internal)
 {
 	if (!baseClass())
 		return;
@@ -2577,7 +2577,7 @@ void BufferParams::makeDocumentClass(bool const clone)
 	for (auto const & mod : layout_modules_)
 		mods.push_back(mod);
 
-	doc_class_ = getDocumentClass(*baseClass(), mods, cite_engine_, clone);
+	doc_class_ = getDocumentClass(*baseClass(), mods, cite_engine_, clone, internal);
 
 	TextClass::ReturnValues success = TextClass::OK;
 	if (!forced_local_layout_.empty())

src/BufferParams.h

@@ -151,7 +151,7 @@ public:
 	/// on to class BufferView::updateDocumentClass(). The exception, of course,
 	/// is in GuiDocument, where we use a BufferParams simply to hold a copy of
 	/// the parameters from the active Buffer.
-	void makeDocumentClass(bool const clone = false);
+	void makeDocumentClass(bool clone = false, bool internal = false);
 	/// Returns the DocumentClass currently in use: the BaseClass as modified
 	/// by modules.
 	DocumentClass const & documentClass() const;

src/BufferView.cpp

@@ -1024,7 +1024,7 @@ bool BufferView::scrollToCursor(DocIterator const & dit, bool const recenter)
 void BufferView::makeDocumentClass()
 {
 	DocumentClassConstPtr olddc = buffer_.params().documentClassPtr();
-	buffer_.params().makeDocumentClass();
+	buffer_.params().makeDocumentClass(buffer_.isClone(), buffer_.isInternal());
 	updateDocumentClass(olddc);
 }
 

src/Compare.cpp

@@ -396,7 +396,7 @@ void Compare::run()
 		dest_buffer->params().documentClassPtr();
 	// We do not want to share the DocumentClass with the other Buffer.
 	// See bug #10295.
-	dest_buffer->params().makeDocumentClass();
+	dest_buffer->params().makeDocumentClass(dest_buffer->isClone(), dest_buffer->isInternal());
 
 	doStatusMessage();
 	// Do the real work

src/TextClass.cpp

@@ -1868,25 +1868,26 @@ Layout TextClass::createBasicLayout(docstring const & name, bool unknown) const
 }
 
 
-DocumentClassPtr getDocumentClass(
-		LayoutFile const & baseClass, LayoutModuleList const & modlist,
-		string const & cengine, bool const clone)
+DocumentClassPtr getDocumentClass(LayoutFile const & baseClass, LayoutModuleList const & modlist,
+		string const & cengine, bool clone, bool internal)
 {
+	bool const show_warnings = !clone && !internal;
 	DocumentClassPtr doc_class =
 	    DocumentClassPtr(new DocumentClass(baseClass));
 	for (auto const & mod : modlist) {
 		LyXModule * lm = theModuleList[mod];
 		if (!lm) {
-			docstring const msg =
-						bformat(_("The module %1$s has been requested by\n"
-						"this document but has not been found in the list of\n"
-						"available modules. If you recently installed it, you\n"
-						"probably need to reconfigure LyX.\n"), from_utf8(mod));
-			if (!clone)
+			if (show_warnings) {
+				docstring const msg =
+							bformat(_("The module %1$s has been requested by\n"
+							"this document but has not been found in the list of\n"
+							"available modules. If you recently installed it, you\n"
+							"probably need to reconfigure LyX.\n"), from_utf8(mod));
 				frontend::Alert::warning(_("Module not available"), msg);
+			}
 			continue;
 		}
-		if (!lm->isAvailable() && !clone) {
+		if (!lm->isAvailable() && show_warnings) {
 			docstring const prereqs = from_utf8(getStringFromVector(lm->prerequisites(), "\n\t"));
 			docstring const msg =
 				bformat(_("The module %1$s requires a package that is not\n"
@@ -1911,14 +1912,15 @@ DocumentClassPtr getDocumentClass(
 
 	LyXCiteEngine * ce = theCiteEnginesList[cengine];
 	if (!ce) {
-		docstring const msg =
-					bformat(_("The cite engine %1$s has been requested by\n"
-					"this document but has not been found in the list of\n"
-					"available engines. If you recently installed it, you\n"
-					"probably need to reconfigure LyX.\n"), from_utf8(cengine));
-		if (!clone)
+		if (show_warnings) {
+			docstring const msg =
+						bformat(_("The cite engine %1$s has been requested by\n"
+						"this document but has not been found in the list of\n"
+						"available engines. If you recently installed it, you\n"
+						"probably need to reconfigure LyX.\n"), from_utf8(cengine));
 			frontend::Alert::warning(_("Cite Engine not available"), msg);
-	} else if (!ce->isAvailable() && !clone) {
+		}
+	} else if (!ce->isAvailable() && show_warnings) {
 		docstring const prereqs = from_utf8(getStringFromVector(ce->prerequisites(), "\n\t"));
 		docstring const msg =
 			bformat(_("The cite engine %1$s requires a package that is not\n"

src/TextClass.h

@@ -564,7 +564,7 @@ private:
 	friend DocumentClassPtr
 		getDocumentClass(LayoutFile const &, LayoutModuleList const &,
 				 std::string const &,
-				 bool const clone);
+				 bool clone, bool internal);
 };
 
 
@@ -575,7 +575,7 @@ private:
 DocumentClassPtr getDocumentClass(LayoutFile const & baseClass,
 			LayoutModuleList const & modlist,
 			std::string const & cengine = std::string(),
-			bool const clone = false);
+			bool clone = false, bool internal = false);
 
 /// convert page sides option to text 1 or 2
 std::ostream & operator<<(std::ostream & os, PageSides p);