Always qualify calls to std::move()

This quashes a new warning in clang++ 15, when std::move() (the
one-parameter version) is used as simply move(). There is a strong
recommendation from WG21 to avoid that.

Details here: https://reviews.llvm.org/D119670

It might be that we should not use that many move()s. I am not
competent to decide on that.

I also used this occasion to get rid of a spacial casing for C++11
that does not seem necessary after all.

src/BufferParams.cpp

@@ -2277,7 +2277,7 @@ bool BufferParams::writeLaTeX(otexstream & os, LaTeXFeatures & features,
 		if (!tmppreamble.str.empty())
 			atlyxpreamble << "\n%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% "
 			                 "LyX specific LaTeX commands.\n"
-			              << move(tmppreamble)
+			              << std::move(tmppreamble)
 			              << '\n';
 	}
 	// the text class specific preamble

src/LaTeXFeatures.cpp

@@ -837,7 +837,7 @@ void addSnippet(std::list<TexString> & list, TexString ts, bool allow_dupes)
 			    return ts.str == ts2.str;
 		    })
 	    )
-		list.push_back(move(ts));
+		list.push_back(std::move(ts));
 }
 
 
@@ -854,7 +854,7 @@ TexString getSnippets(std::list<TexString> const & list)
 
 void LaTeXFeatures::addPreambleSnippet(TexString snippet, bool allow_dupes)
 {
-	addSnippet(preamble_snippets_, move(snippet), allow_dupes);
+	addSnippet(preamble_snippets_, std::move(snippet), allow_dupes);
 }
 
 

src/MetricsInfo.cpp

@@ -33,7 +33,7 @@ namespace lyx {
 /////////////////////////////////////////////////////////////////////////
 
 MetricsBase::MetricsBase(BufferView * b, FontInfo f, int w)
-	: bv(b), font(move(f)), fontname("mathnormal"),
+	: bv(b), font(std::move(f)), fontname("mathnormal"),
 	  textwidth(w), macro_nesting(0),
 	  solid_line_thickness_(1), solid_line_offset_(1), dotted_line_thickness_(1)
 {
@@ -75,11 +75,7 @@ Changer MetricsBase::changeFontSet(string const & name)
 	    && ((isTextFont(oldname) && oldcolor != Color_foreground)
 	        || (isMathFont(oldname) && oldcolor != Color_math)))
 		font.setColor(oldcolor);
-#if __cplusplus >= 201402L
 	return rc;
-#else
-	return move(rc);
-#endif
 }
 
 

src/TexRow.cpp

@@ -38,14 +38,14 @@ namespace lyx {
 
 
 TexString::TexString(docstring s)
-	: str(move(s)), texrow(TexRow())
+	: str(std::move(s)), texrow(TexRow())
 {
 	texrow.setRows(1 + count(str.begin(), str.end(), '\n'));
 }
 
 
 TexString::TexString(docstring s, TexRow t)
-	: str(move(s)), texrow(move(t))
+	: str(std::move(s)), texrow(std::move(t))
 {
 	validate();
 }
@@ -235,7 +235,7 @@ void TexRow::append(TexRow other)
 	RowList::iterator it = other.rowlist_.begin();
 	RowList::iterator const end = other.rowlist_.end();
 	LASSERT(it != end, return);
-	currentRow().append(move(*it++));
+	currentRow().append(std::move(*it++));
 	move(it, end, back_inserter(rowlist_));
 }
 

src/TocBackend.cpp

@@ -147,7 +147,7 @@ shared_ptr<Toc> TocBackend::toc(string const & type)
 TocBuilder & TocBackend::builder(string const & type)
 {
 	auto p = lyx::make_unique<TocBuilder>(toc(type));
-	return * builders_.insert(make_pair(type, move(p))).first->second;
+	return * builders_.insert(make_pair(type, std::move(p))).first->second;
 }
 
 

src/frontends/qt/Action.cpp

@@ -34,7 +34,7 @@ namespace frontend {
 
 Action::Action(FuncRequest func, QIcon const & icon, QString const & text,
                QString const & tooltip, QObject * parent)
-	: QAction(parent), func_(make_shared<FuncRequest>(move(func))), icon_(icon)
+	: QAction(parent), func_(make_shared<FuncRequest>(std::move(func))), icon_(icon)
 {
 	init(text, tooltip);
 }

src/insets/InsetArgument.cpp

@@ -356,7 +356,7 @@ void InsetArgument::latexArgument(otexstream & os,
 	os << presetarg;
 	if (!presetarg.empty() && !ts.str.empty())
 		os << ", ";
-	os << move(ts);
+	os << std::move(ts);
 	if (add_braces)
 		os << '}';
 	os << rdelim;

src/insets/InsetFloat.cpp

@@ -965,7 +965,7 @@ TexString InsetFloat::getCaption(OutputParams const & runparams) const
 	// Protect ']'
 	if (arg.find(']') != docstring::npos)
 		arg = '{' + arg + '}';
-	os << move(ts);
+	os << std::move(ts);
 	os << ']';
 	if (!runparams.nice)
 		os << safebreakln;

src/insets/InsetListings.cpp

@@ -369,7 +369,7 @@ void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
 				os << '[' << float_placement << "]";
 		} else if (captionfirst && !caption.str.empty()) {
 			os << breakln << "\\lyxmintcaption[t]{"
-			   << move(caption) << "}\n";
+			   << std::move(caption) << "}\n";
 		}
 		os << breakln << "\\begin{minted}";
 		if (!param_string.empty())
@@ -378,11 +378,11 @@ void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
 		   << code << breakln << "\\end{minted}\n";
 		if (isfloat) {
 			if (!caption.str.empty())
-				os << "\\caption{" << move(caption) << "}\n";
+				os << "\\caption{" << std::move(caption) << "}\n";
 			os << "\\end{listing}\n";
 		} else if (!captionfirst && !caption.str.empty()) {
 			os << breakln << "\\lyxmintcaption[b]{"
-			   << move(caption) << "}";
+			   << std::move(caption) << "}";
 		}
 	} else {
 		OutputParams rp = runparams;
@@ -396,7 +396,7 @@ void InsetListings::latex(otexstream & os, OutputParams const & runparams) const
 				os << safebreakln;
 			os << "[";
 			if (!caption.str.empty()) {
-				os << "caption={" << move(caption) << '}';
+				os << "caption={" << std::move(caption) << '}';
 				if (!param_string.empty())
 					os << ',';
 			}

src/insets/InsetText.cpp

@@ -1118,7 +1118,7 @@ void InsetText::updateBuffer(ParIterator const & it, UpdateType utype, bool cons
 		tclass.counters().current_float(savecnt.current_float());
 		tclass.counters().isSubfloat(savecnt.isSubfloat());
 		buffer().updateBuffer(it2, utype, deleted);
-		tclass.counters() = move(savecnt);
+		tclass.counters() = std::move(savecnt);
 	}
 }
 

src/support/unicode.cpp

@@ -61,7 +61,7 @@ struct IconvProcessor::Handler {
 
 
 IconvProcessor::IconvProcessor(string tocode, string fromcode)
-	: tocode_(move(tocode)), fromcode_(move(fromcode))
+	: tocode_(std::move(tocode)), fromcode_(std::move(fromcode))
 {}
 
 
@@ -251,7 +251,7 @@ IconvProcessor & getProc(map<string, IconvProcessor> & processors,
 	map<string, IconvProcessor>::iterator const it = processors.find(encoding);
 	if (it == processors.end()) {
 		IconvProcessor p(fromcode, tocode);
-		return processors.insert(make_pair(encoding, move(p))).first->second;
+		return processors.insert(make_pair(encoding, std::move(p))).first->second;
 	}
 	return it->second;
 }

src/texstream.cpp

@@ -90,7 +90,7 @@ size_t otexstringstream::length()
 
 TexString otexstringstream::release()
 {
-	TexString ts(ods_.str(), move(texrow()));
+	TexString ts(ods_.str(), std::move(texrow()));
 	// reset this
 	texrow() = TexRow();
 	ods_.clear();
@@ -164,8 +164,8 @@ otexstream & operator<<(otexstream & ots, odocstream_manip pf)
 otexrowstream & operator<<(otexrowstream & ots, TexString ts)
 {
 	ts.validate();
-	ots.os() << move(ts.str);
+	ots.os() << std::move(ts.str);
-	ots.texrow().append(move(ts.texrow));
+	ots.texrow().append(std::move(ts.texrow));
 	return ots;
 }
 
@@ -201,7 +201,7 @@ otexstream & operator<<(otexstream & ots, TexString ts)
 		ots.canBreakLine(ts.str[len - 2] != '\n');
 	ots.lastChar(ts.str[len - 1]);
 
-	otrs << move(ts);
+	otrs << std::move(ts);
 	return ots;
 }