diff -r 9f5fe3fc9d16 -r d85dc8a8f41c QTfrontend/util/FileEngine.h
--- a/QTfrontend/util/FileEngine.h	Fri Nov 23 16:16:02 2012 +0400
+++ b/QTfrontend/util/FileEngine.h	Fri Nov 23 16:17:06 2012 +0400
@@ -38,6 +38,7 @@
         bool atEnd() const;
 
         virtual qint64 read(char *data, qint64 maxlen);
+        virtual qint64 readLine(char *data, qint64 maxlen);
         virtual qint64 write(const char *data, qint64 len);
 
         bool isOpened() const;
@@ -53,6 +54,7 @@
         FileFlags _flags;
         QString _filename;
         QDateTime _datetime;
+        bool m_bufferSet;
 };
 
 class FileEngineHandler : public QAbstractFileEngineHandler