1 files changed, 5 insertions, 0 deletions
diff --git a/st.c b/st.c
index 72cad4e..8937ba6 100644
--- a/st.c
+++ b/st.c
@@ -1055,6 +1055,11 @@ tattrset(int attr)
 	return 0;
 }
 
+int tisaltscr(void)
+{
+	return IS_SET(MODE_ALTSCREEN);
+}
+
 void
 tsetdirt(int top, int bot)
 {