From adcf2c7f2f495f5df148683764bf7cba6a70f34c Mon Sep 17 00:00:00 2001
From: Rocky Zhang <yzhang.rocky@gmail.com>
Date: Tue, 18 Jul 2023 09:12:57 -0700
Subject: [PATCH] fix: missing bottom border Fixes:
 https://github.com/lewis6991/gitsigns.nvim/issues/841

---
 lua/gitsigns/popup.lua | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lua/gitsigns/popup.lua b/lua/gitsigns/popup.lua
index b655819a..d9914341 100644
--- a/lua/gitsigns/popup.lua
+++ b/lua/gitsigns/popup.lua
@@ -23,8 +23,9 @@ end
 -- Expand height until all lines are visible to account for wrapped lines.
 --- @param winid integer
 --- @param nlines integer
-local function expand_height(winid, nlines)
+local function expand_height(winid, nlines, border)
   local newheight = 0
+  local maxheight = vim.o.lines - vim.o.cmdheight - (border ~= '' and 2 or 0)
   for _ = 0, 50 do
     local winheight = api.nvim_win_get_height(winid)
     if newheight > winheight then
@@ -39,6 +40,10 @@ local function expand_height(winid, nlines)
       break
     end
     newheight = winheight + nlines - wd
+    if newheight > maxheight then
+      api.nvim_win_set_height(winid, maxheight)
+      break
+    end
     api.nvim_win_set_height(winid, newheight)
   end
 end
@@ -145,7 +150,7 @@ function M.create0(lines, opts, id)
   vim.w[winid].gitsigns_preview = id or true
 
   if not opts.height then
-    expand_height(winid, #lines)
+    expand_height(winid, #lines, opts.border)
   end
 
   if opts1.style == 'minimal' then