1 files changed, 5 insertions, 0 deletions
diff --git a/st.c b/st.c
index c5e3a4f..7f35b8a 100644
--- a/st.c
+++ b/st.c
@@ -1058,6 +1058,11 @@ tnew(int col, int row)
 	treset();
 }
 
+int tisaltscr(void)
+{
+	return IS_SET(MODE_ALTSCREEN);
+}
+
 void
 tswapscreen(void)
 {