mojibake: clean up topmost line of display #842

src/demo/demo.c

@@ -186,6 +186,7 @@ ext_demos(struct notcurses* nc, const char* spec, bool ignore_failures){
     if(ret && !ignore_failures){
       break;
     }
+    notcurses_refresh(nc, NULL, NULL);
   }
   return results;
 }

src/demo/mojibake.c

@@ -3699,18 +3699,23 @@ int mojibake_demo(struct notcurses* nc){
   do{
     unsigned u = topmost;
     do{
-      int y, x, leny;
+      int y, x, leny, lenx;
       ncplane_yx(planes[u], &y, &x);
       if(y >= dimy){
         break;
       }
-      if(ncplane_move_yx(planes[u], y - 1, x)){
+      ncplane_dim_yx(planes[u], &leny, &lenx);
+      if(y == 1){
+        if(leny > 1){
+          if(ncplane_resize(planes[u], 1, 0, leny - 1, lenx, -1, 0, leny - 1, lenx)){
+            goto err;
+          }
+        }else{
+          ++topmost;
+        }
+      }else if(ncplane_move_yx(planes[u], y - 1, x)){
         goto err;
       }
-      ncplane_dim_yx(planes[u], &leny, NULL);
-      if(leny + y + 1 == 0){
-        ++topmost;
-      }
       if(leny + y + 1 == dimy - 1){
         if(u + 1 < sizeof(planes) / sizeof(*planes)){
           if(ncplane_move_yx(planes[u + 1], dimy - 1, x)){

src/lib/notcurses.c

@@ -490,8 +490,8 @@ int ncplane_resize_internal(ncplane* n, int keepy, int keepx, int keepleny,
   n->nc->stats.fbbytes -= sizeof(*preserved) * (rows * cols);
   n->nc->stats.fbbytes += fbsize;
   n->fb = fb;
-  n->absy = n->absy + keepy - yoff;
-  n->absx = n->absx + keepx - xoff;
+  n->absy += keepy + yoff;
+  n->absx += keepx + xoff;
   // if we're keeping nothing, dump the old egcspool. otherwise, we go ahead
   // and keep it. perhaps we ought compact it?
   if(keptarea == 0){ // keep nothing, resize/move only