vim-patch:7.4.309 #843

Problem:    When increasing the size of the lower window, the upper
            window jumps back to the top. (Ron Aaron)
Solution:   Change setting the topline. (Nobuhiro Takasaki)

https://code.google.com/p/vim/source/detail?r=88a6e9f33822d33b6c32db578750c6c178c63f50

1 files changed, 4 insertions, 3 deletions

diff --git a/src/nvim/window.c b/src/nvim/window.c
index ec56e331ce..98daa7eca2 100644
--- a/src/nvim/window.c
+++ b/src/nvim/window.c
@@ -4540,7 +4540,8 @@ void win_new_height(win_T *wp, int height)
           --wp->w_wrow;
         }
       }
-    } else {
+      set_topline(wp, lnum);
+    } else if (sline > 0) {
       while (sline > 0 && lnum > 1) {
         hasFoldingWin(wp, lnum, &lnum, NULL, TRUE, NULL);
         if (lnum == 1) {
@@ -4566,13 +4567,13 @@ void win_new_height(win_T *wp, int height)
         hasFoldingWin(wp, lnum, NULL, &lnum, TRUE, NULL);
         lnum++;
         wp->w_wrow -= line_size + sline;
-      } else if (sline >= 0) {
+      } else if (sline > 0) {
         /* First line of file reached, use that as topline. */
         lnum = 1;
         wp->w_wrow -= sline;
       }
+      set_topline(wp, lnum);
     }
-    set_topline(wp, lnum);
   }
 
   if (wp == curwin) {