custom new pane action

+ added config option to control if new pane should be created when one
  already exists in the same place. default is set to false, i.e. panes
  will be reused.

Author: karshPrime

README.md

@@ -7,8 +7,6 @@ allowing customisation of build and run commands.
 Also supports running [lazygit](https://github.com/jesseduffield/lazygit) from
 within current Neovim session on an overlay terminal.
 
-⚠️ [Version 2 Backward Compatibility Broken](#important-notice-backward-compatibility) ⚠️
-
 ![preview](.media/screenshot.gif)
 
 ## Install & Setup
@@ -21,14 +19,17 @@ Install using your favorite plugin manager. For example, using
 And setup it with:
 ```lua
 require('tmux-compile').setup({
-    -- Overriding default configurations. [OPTIONAL]
-    save_session = false,             -- Save file before action
-    overlay_sleep = 1,                -- Pause before overlay autoclose; seconds
-    overlay_width_percent = 80,       -- Overlay width percentage
-    overlay_height_percent = 80,      -- Overlay height percentage
+    -- Overriding Default Configurations. [OPTIONAL]
+    save_session = false,             -- Save file before action (:wall)
     build_run_window_title = "build", -- Tmux window name for Build/Run
+    ---- same window pane
+    new_pane_everytime = false,       -- Use existing side panes for action, when false
     side_width_percent = 50,          -- Side pane width percentage
     bottom_height_percent = 30,       -- Bottom pane height percentage
+    ---- overlay window
+    overlay_sleep = 1,                -- Pause before overlay autoclose; seconds
+    overlay_width_percent = 80,       -- Overlay width percentage
+    overlay_height_percent = 80,      -- Overlay height percentage
 
     -- Languages' Run and Build actions.  [REQUIRED]
     build_run_config = {

lua/tmux-compile/init.lua

@@ -6,12 +6,13 @@
 local M = {}
 M.config = {
     save_session = false,
-    overlay_sleep = 1,
-    overlay_width_percent = 80,
-    overlay_height_percent = 80,
     build_run_window_title = "build",
+    new_pane_everytime = false,
     side_width_percent = 50,
     bottom_height_percent = 30,
+    overlay_sleep = 1,
+    overlay_width_percent = 80,
+    overlay_height_percent = 80,
     build_run_config = {}
 }
 
@@ -134,7 +135,7 @@ local function split_window(cmd, side, error_name)
     vim.fn.system("tmux selectp " .. direction_lookup[side])
     local moved_pane = vim.fn.system("tmux display -p '#{pane_id}'")
 
-    if (vim.trim(current_pane) == vim.trim(moved_pane)) then
+    if (vim.trim(current_pane) == vim.trim(moved_pane) or M.config.new_pane_everytime) then
         local parameters = side .. " -l " .. length_percentage[side] .. "%"
         vim.fn.system("tmux splitw -" .. parameters .. " '" .. cmd .. "; zsh'")
     else