Do not set dirty flag twice in tscrollup and tscrolldown.

diff --git a/st.c b/st.c
index d188b35..dffa84e 100644 (file)
--- a/st.c
+++ b/st.c
@@ -1398,9 +1398,8 @@ tscrolldown(int orig, int n) {
 
        LIMIT(n, 0, term.bot-orig+1);
 
-       tclearregion(0, term.bot-n+1, term.col-1, term.bot);
        tsetdirt(orig, term.bot-n);
-       tsetdirt(orig+n, term.bot);
+       tclearregion(0, term.bot-n+1, term.col-1, term.bot);
 
        for(i = term.bot; i >= orig+n; i--) {
                temp = term.line[i];
@@ -1418,7 +1417,6 @@ tscrollup(int orig, int n) {
        LIMIT(n, 0, term.bot-orig+1);
 
        tclearregion(0, orig, term.col-1, orig+n-1);
-       tsetdirt(orig, term.bot-n);
        tsetdirt(orig+n, term.bot);
 
        for(i = orig; i <= term.bot-n; i++) {