From 1546c82b675cde870ee658f73bf6fe372565cfd4 Mon Sep 17 00:00:00 2001
From: bhagwan <bhagwan@disroot.org>
Date: Mon, 17 Jan 2022 08:02:50 -0800
Subject: [PATCH] pass $FZF_PREVIEW_LINES|$FZF_PREVIEW_COLUMNS to git_diff cmd
 (#313)

---
 lua/fzf-lua/previewer/fzf.lua | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lua/fzf-lua/previewer/fzf.lua b/lua/fzf-lua/previewer/fzf.lua
index 1aa9df9..8b54cc8 100644
--- a/lua/fzf-lua/previewer/fzf.lua
+++ b/lua/fzf-lua/previewer/fzf.lua
@@ -161,7 +161,7 @@ end
 
 function Previewer.git_diff:cmdline(o)
   o = o or {}
-  local act = shell.preview_action_cmd(function(items)
+  local act = shell.preview_action_cmd(function(items, fzf_lines, fzf_columns)
     if not items or vim.tbl_isempty(items) then
       utils.warn("shell error while running preview action.")
       return
@@ -186,7 +186,8 @@ function Previewer.git_diff:cmdline(o)
       vim.fn.executable(self.pager:match("[^%s]+")) == 1 then
       pager = '| ' .. self.pager
     end
-    cmd = string.format('%s %s %s', cmd, vim.fn.shellescape(file.path), pager)
+    cmd = string.format('FZF_PREVIEW_LINES=%d;FZF_PREVIEW_COLUMNS=%d;%s %s %s',
+      fzf_lines, fzf_columns, cmd, vim.fn.shellescape(file.path), pager)
     if self.opts.debug then
       print("[DEBUG]: "..cmd.."\n")
     end