X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmathed%2FMathExtern.cpp;h=e911f0babf24bc71897915e824440da90a4de811;hb=999831043e6da50b3095a2dfec7000d4209e586c;hp=da43bd4e3508043ee7bc6a70801efc90598d470b;hpb=bc7704a78e32e67253847fdd3d163005fa615209;p=lyx.git

diff --git a/src/mathed/MathExtern.cpp b/src/mathed/MathExtern.cpp
index da43bd4e35..e911f0babf 100644
--- a/src/mathed/MathExtern.cpp
+++ b/src/mathed/MathExtern.cpp
@@ -115,7 +115,7 @@ bool extractScript(MathData & ar,
 // try to extract an "argument" to some function.
 // returns position behind the argument
 MathData::iterator extractArgument(MathData & ar,
-	MathData::iterator pos, MathData::iterator last, 
+	MathData::iterator pos, MathData::iterator last,
 	ExternalMath kind, bool function = false)
 {
 	// nothing to get here
@@ -211,7 +211,7 @@ void extractMatrices(MathData & ar)
 			continue;
 		if (!arr.front()->asGridInset())
 			continue;
-		ar[i] = MathAtom(new InsetMathMatrix(*(arr.front()->asGridInset()), 
+		ar[i] = MathAtom(new InsetMathMatrix(*(arr.front()->asGridInset()),
 		                 inset->left_, inset->right_));
 	}
 
@@ -602,7 +602,7 @@ void extractFunctions(MathData & ar, ExternalMath kind)
 		auto p = make_unique<InsetMathExFunc>(buf, name);
 
 		// jt points to the "argument". Get hold of this.
-		MathData::iterator st = 
+		MathData::iterator st =
 				extractArgument(p->cell(0), jt, ar.end(), kind, true);
 
 		// replace the function name by a real function inset
@@ -896,8 +896,8 @@ void extractDiff(MathData & ar)
 				int mult = 1;
 				if (extractNumber(script->up(), mult)) {
 					//lyxerr << "mult: " << mult << endl;
-					if (mult > 1000) {
-						lyxerr << "Cannot differentiate more than 1000 times !" << endl;
+					if (mult < 0 || mult > 1000) {
+						lyxerr << "Cannot differentiate less than 0 or more than 1000 times !" << endl;
 						continue;
 					}
 					for (int i = 0; i < mult; ++i)
@@ -1391,9 +1391,9 @@ namespace {
 		return res;
 	}
 
-}
+} // namespace
 
-} // anon namespace
+} // namespace
 
 void write(MathData const & dat, WriteStream & wi)
 {
@@ -1421,11 +1421,46 @@ void write(MathData const & dat, WriteStream & wi)
 
 void writeString(docstring const & s, WriteStream & os)
 {
-	if (!os.latex() || os.lockedMode()) {
+	if (!os.latex()) {
 		os << (os.asciiOnly() ? escape(s) : s);
 		return;
 	}
 
+	if (os.lockedMode()) {
+		bool space;
+		docstring cmd;
+		for (char_type c : s) {
+			try {
+				Encodings::latexMathChar(c, true, os.encoding(), cmd, space);
+				os << cmd;
+				os.pendingSpace(space);
+			} catch (EncodingException const & e) {
+				switch (os.output()) {
+				case WriteStream::wsDryrun: {
+					os << "<" << _("LyX Warning: ")
+					   << _("uncodable character") << " '";
+					os << docstring(1, e.failed_char);
+					os << "'>";
+					break;
+				}
+				case WriteStream::wsPreview: {
+					// indicate the encoding error by a boxed '?'
+					os << "{\\fboxsep=1pt\\fbox{?}}";
+					LYXERR0("Uncodable character" << " '"
+						<< docstring(1, e.failed_char)
+						<< "'");
+					break;
+				}
+				case WriteStream::wsDefault:
+				default:
+					// throw again
+					throw(e);
+				}
+			}
+		}
+		return;
+	}
+
 	docstring::const_iterator cit = s.begin();
 	docstring::const_iterator end = s.end();