Fix bug 4178.

Clear out selection and cut stack buffers on exit.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/branches/BRANCH_1_5_X@20302 a592a061-630c-0410-9148-cb99ea01b6c8

src/CutAndPaste.cpp

@@ -692,6 +692,12 @@ void clearSelection()
 }
 
 
+void clearCutStack()
+{
+	theCuts.clear();
+}
+
+
 docstring getSelection(Buffer const & buf, size_t sel_index)
 {
 	return sel_index < theCuts.size()

src/CutAndPaste.h

@@ -75,6 +75,8 @@ void saveSelection(Cursor & cur);
 bool selection();
 /// Clear our selection buffer
 void clearSelection();
+/// Clear our cut stack.
+void clearCutStack();
 /// Paste the current selection at \p cur
 /// Does handle undo. Does only work in text, not mathed.
 void pasteSelection(Cursor & cur, ErrorList &);

src/LyX.cpp

@@ -22,6 +22,7 @@
 #include "buffer_funcs.h"
 #include "BufferList.h"
 #include "Converter.h"
+#include "CutAndPaste.h"
 #include "debug.h"
 #include "Encoding.h"
 #include "ErrorList.h"
@@ -486,6 +487,10 @@ int LyX::exec(int & argc, char * argv[])
 
 void LyX::prepareExit()
 {
+	// Clear the clipboard and selection stack:
+	cap::clearCutStack();
+	cap::clearSelection();
+
 	// Set a flag that we do quitting from the program,
 	// so no refreshes are necessary.
 	quitting = true;

status.15x

@@ -139,6 +139,8 @@ What's new
 - Fix bug where the cursor was largely off-screen on document opening
   (bug 3427).
 
+- Fix crash on quitting if some text is selected (bug 4178).
+
 
 * DOCUMENTATION