Only allow setting the code page to valid values.

2 files changed, 5 insertions, 2 deletions

diff --git a/src/Editor.cxx b/src/Editor.cxx
index 6fd4c44af..87a0391b4 100644
--- a/src/Editor.cxx
+++ b/src/Editor.cxx
@@ -6509,8 +6509,10 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 		return pdoc->LineEnd(wParam);
 
 	case SCI_SETCODEPAGE:
-		pdoc->dbcsCodePage = wParam;
-		InvalidateStyleRedraw();
+		if (ValidCodePage(wParam)) {
+			pdoc->dbcsCodePage = wParam;
+			InvalidateStyleRedraw();
+		}
 		break;
 
 	case SCI_GETCODEPAGE:
diff --git a/src/Editor.h b/src/Editor.h
index 5799b4110..fe7be268a 100644
--- a/src/Editor.h
+++ b/src/Editor.h
@@ -525,6 +525,7 @@ protected:	// ScintillaBase subclass needs access to much of Editor
 	void GetHotSpotRange(int& hsStart, int& hsEnd);
 
 	int CodePage() const;
+	virtual bool ValidCodePage(int /* codePage */) const { return true; }
 	int WrapCount(int line);
 
 	virtual sptr_t DefWndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) = 0;