vi: code shrink

function                                             old     new   delta
new_screen                                            84      75      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 12 insertions, 7 deletions

diff --git a/editors/vi.c b/editors/vi.c
index ce261feca..38177dec4 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -722,20 +722,25 @@ static void screen_erase(void)
         memset(screen, ' ', screensize);        // clear new screen
 }
 
-static char *new_screen(int ro, int co)
+static void new_screen(int ro, int co)
 {
-        int li;
+        char *s;
 
         free(screen);
         screensize = ro * co + 8;
-        screen = xmalloc(screensize);
+        s = screen = xmalloc(screensize);
         // initialize the new screen. assume this will be a empty file.
         screen_erase();
-        //   non-existent text[] lines start with a tilde (~).
-        for (li = 1; li < ro - 1; li++) {
-                screen[(li * co) + 0] = '~';
+        // non-existent text[] lines start with a tilde (~).
+        //screen[(1 * co) + 0] = '~';
+        //screen[(2 * co) + 0] = '~';
+        //..
+        //screen[((ro-2) * co) + 0] = '~';
+        ro -= 2;
+        while (--ro >= 0) {
+                s += co;
+                *s = '~';
         }
-        return screen;
 }
 
 //----- Synchronize the cursor to Dot --------------------------