1 files changed, 5 insertions, 0 deletions

diff --git a/st.c b/st.c
index aaea6b4..0ebd3fb 100644
--- a/st.c
+++ b/st.c
@@ -1055,6 +1055,11 @@ tnew(int col, int row)
 	treset();
 }
 
+int tisaltscr(void)
+{
+	return IS_SET(MODE_ALTSCREEN);
+}
+
 void
 tswapscreen(void)
 {