Clear screen: Fix edge case

With sequence \e[1J, if cursor is on second line, clear the first line.

1 files changed, 1 insertions, 1 deletions

diff --git a/st.c b/st.c
index 57c6e96..2e3800e 100644
--- a/st.c
+++ b/st.c
@@ -1705,7 +1705,7 @@ csihandle(void)
                         }
                         break;
                 case 1: /* above */
-                        if (term.c.y > 1)
+                        if (term.c.y > 0)
                                 tclearregion(0, 0, term.col-1, term.c.y-1);
                         tclearregion(0, term.c.y, term.c.x, term.c.y);
                         break;