[hackers] [st] On terminal resize, clear the alt screen with its own cursor. || Colona

[git]

commit 8f11e1cd034ff28ca47bb4955505db7fa8016ba8
Author: Colona <col...@ycc.fr>
Date:   Thu Apr 24 20:35:41 2014 +0200

    On terminal resize, clear the alt screen with its own cursor.
    
    Currently the alternate screen get messed up on resize if it has
    different colors or mode.

diff --git a/st.c b/st.c
index c9ef574..b37069c 100644
--- a/st.c
+++ b/st.c
@@ -2674,7 +2674,9 @@ tresize(int col, int row) {
                if(0 < col && minrow < row) {
                        tclearregion(0, minrow, col - 1, row - 1);
                }
+               tcursor(CURSOR_SAVE);
                tswapscreen();
+               tcursor(CURSOR_LOAD);
        } while(orig != term.line);
 
        return (slide > 0);