X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FFormat.cpp;h=a6727a2d8128a8c67e670912ad559b0d66b901f8;hb=c57d04908f9746a3923c36c0f41e1e23c6043550;hp=ab09d4a6ded716807baa3dffcb322fa56db5dc8a;hpb=db9c8c6d0229eccdcc28d55eead018d9e40347a4;p=lyx.git

diff --git a/src/Format.cpp b/src/Format.cpp
index ab09d4a6de..a6727a2d81 100644
--- a/src/Format.cpp
+++ b/src/Format.cpp
@@ -682,6 +682,28 @@ bool Formats::view(Buffer const & buffer, FileName const & filename,
 
 	string command = format->viewer();
 
+	// Escape backslashes if not already in double or single quotes.
+	// We cannot simply quote the whole command as there may be arguments.
+	if (contains(command, '\\')) {
+		bool inquote1 = false;
+		bool inquote2 = false;
+		string::iterator cit = command.begin();
+		for (; cit != command.end(); ++cit) {
+			switch (*cit) {
+			case '"':
+				inquote1 = !inquote1;
+				break;
+			case '\'':
+				inquote2 = !inquote2;
+				break;
+			case '\\':
+				if (!inquote1 && !inquote2)
+					cit = ++command.insert(cit, '\\');
+				break;
+			}
+		}
+	}
+
 	if (format_name == "dvi" &&
 	    !lyxrc.view_dvi_paper_option.empty()) {
 		string paper_size = buffer.params().paperSizeName(BufferParams::XDVI);