From b75c83398cd8a8b94cda6cf2a3b84aa782d64699 Mon Sep 17 00:00:00 2001
From: Riley Bruins <ribru17@hotmail.com>
Date: Fri, 21 Jul 2023 06:35:48 -0700
Subject: [PATCH 1/2] feat: allow maximum height setting for popup

---
 lua/gitsigns/config.lua | 8 ++++++++
 lua/gitsigns/popup.lua  | 5 +++++
 2 files changed, 13 insertions(+)

diff --git a/lua/gitsigns/config.lua b/lua/gitsigns/config.lua
index 00d9413cd..ac858845c 100644
--- a/lua/gitsigns/config.lua
+++ b/lua/gitsigns/config.lua
@@ -72,6 +72,7 @@ end
 --- @field current_line_blame_formatter_nc string|Gitsigns.CurrentLineBlameFmtFun
 --- @field current_line_blame_opts Gitsigns.CurrentLineBlameOpts
 --- @field preview_config table<string,any>
+--- @field preview_max_height integer | nil
 --- @field attach_to_untracked boolean
 --- @field yadm { enable: boolean }
 --- @field worktrees {toplevel: string, gitdir: string}[]
@@ -504,6 +505,13 @@ M.schema = {
       to `nvim_open_win`.
     ]],
   },
+  preview_max_height = {
+    type = 'number',
+    default = nil,
+    description = [[
+      Optional maximum height value of the popup window.
+    ]]
+  },
 
   attach_to_untracked = {
     type = 'boolean',
diff --git a/lua/gitsigns/popup.lua b/lua/gitsigns/popup.lua
index d9914341b..a5b5dc076 100644
--- a/lua/gitsigns/popup.lua
+++ b/lua/gitsigns/popup.lua
@@ -26,6 +26,11 @@ end
 local function expand_height(winid, nlines, border)
   local newheight = 0
   local maxheight = vim.o.lines - vim.o.cmdheight - (border ~= '' and 2 or 0)
+  local config = require('gitsigns.config').config
+  local MAX_HEIGHT = config.preview_max_height or maxheight
+  if maxheight > MAX_HEIGHT then
+    maxheight = MAX_HEIGHT
+  end
   for _ = 0, 50 do
     local winheight = api.nvim_win_get_height(winid)
     if newheight > winheight then

From f9ad08241eac034207ac8bdbfca51f390c0f0ce2 Mon Sep 17 00:00:00 2001
From: Riley Bruins <ribru17@hotmail.com>
Date: Fri, 21 Jul 2023 20:51:31 -0700
Subject: [PATCH 2/2] fix: enforce max height even when popup doesn't try to
 expand to full window height

---
 lua/gitsigns/popup.lua | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lua/gitsigns/popup.lua b/lua/gitsigns/popup.lua
index a5b5dc076..b8b5c7361 100644
--- a/lua/gitsigns/popup.lua
+++ b/lua/gitsigns/popup.lua
@@ -148,6 +148,11 @@ function M.create0(lines, opts, id)
 
   local opts1 = vim.deepcopy(opts or {})
   opts1.height = opts1.height or #lines -- Guess, adjust later
+
+  local max_height = require('gitsigns.config').config.preview_max_height
+  if max_height and opts1.height > max_height then
+    opts1.height = max_height
+  end
   opts1.width = opts1.width or bufnr_calc_width(bufnr, lines)
 
   local winid = api.nvim_open_win(bufnr, false, opts1)