1 files changed, 11 insertions, 0 deletions
diff --git a/fltrimpl.h b/fltrimpl.h
index a35e68b..60c827b 100644
--- a/fltrimpl.h
+++ b/fltrimpl.h
@@ -39,4 +39,15 @@
 #define FILTER_OUTPUT_BYTE(site, output)	\
 	FILTER_OUTPUT(site, &(const byte &)(byte)output, 1, 0)
 
+#define FILTER_OUTPUT2_MODIFIABLE(site, statement, output, length, messageEnd)	\
+	{\
+	case site:	\
+	statement;	\
+	if (OutputModifiable(site, output, length, messageEnd, blocking))	\
+		return STDMAX(1U, (unsigned int)length-m_inputPosition);\
+	}
+
+#define FILTER_OUTPUT_MODIFIABLE(site, output, length, messageEnd)	\
+	FILTER_OUTPUT2_MODIFIABLE(site, 0, output, length, messageEnd)
+
 #endif