better error handling

~ updated printed error to display more information about what's missing
+ added missing error check for xxxBG calls
~ updated readme with Debug commands, and more clarification on config

Author: karshPrime

README.md

@@ -34,16 +34,20 @@ require('tmux-compile').setup({
             extension = {'c', 'cpp', 'h'},
             build = 'make',
             run = 'make run',
+            debug = 'lldb',
         },
         {
             extension = {'rs'},
             build = 'cargo build',
             run = 'cargo run',
+            -- not all properties are required for all extensions
         },
         {
             extension = {'go'},
-            build = 'go build',
             run = 'go run .',
+            -- Run would work for golang
+            -- but Build and Debug will return errors informing configs are
+            -- missing
         }
     }
 }},
@@ -74,6 +78,10 @@ vim.keymap.set('n','<F5>', ':TMUXcompile Run<CR>', {silent=true})
 | Run program in a tmux new window                        | `:TMUXcompile RunBG`  |
 | Run program in a new pane next to current nvim pane     | `:TMUXcompile RunV`   |
 | Run program in a new pane bellow current nvim pane      | `:TMUXcompile RunH`   |
+| Start debugger in an overlay terminal window            | `:TMUXcompile Debug`  |
+| Start debugger in a tmux new window                     | `:TMUXcompile DebugBG`|
+| Start debugger in a new pane next to current nvim pane  | `:TMUXcompile DebugV` |
+| Start debugger in a new pane bellow current nvim pane   | `:TMUXcompile DebugH` |
 | Open lazygit in overlay                                 | `:TMUXcompile lazygit`|
 
 \* **Run** here includes both compiling and running the program, depending on the

lua/tmux-compile/init.lua

@@ -69,9 +69,15 @@ end
 --# CALL FUNCTIONS #------------------------------------------------------------
 
 -- run command in a new or existing tmux window
-local function new_window(cmd)
+local function new_window(cmd, error_name)
     local window_name = M.config.build_run_window_title
 
+    if not cmd then
+        local extension = get_file_extension()
+        print("Error: " .. error_name ..  " command not found for " .. extension)
+        return 1
+    end
+
     if tmux_window_exists(window_name) then
         local proj_dir = vim.fn.trim(vim.fn.system("pwd"))
         local win_dir = vim.fn.trim(vim.fn.system("tmux display -p -t " .. window_name .. " '#{pane_current_path}'"))
@@ -89,29 +95,33 @@ local function new_window(cmd)
 end
 
 -- run command in an overlay pane
-local function overlay(cmd, sleep_duration)
-    if cmd then
-        local proj_dir = vim.fn.trim(vim.fn.system("pwd"))
-        local cmd_head = "silent !tmux display-popup -E -d" .. proj_dir
+local function overlay(cmd, sleep_duration, error_name)
+    if not cmd then
+        local extension = get_file_extension()
+        print("Error: " .. error_name ..  " command not found for " .. extension)
+        return 1
+    end
 
-        local dimensions = " -w " .. M.config.overlay_width_percent .. "\\% -h " .. M.config.overlay_height_percent .. "\\% '"
+    local proj_dir = vim.fn.trim(vim.fn.system("pwd"))
+    local cmd_head = "silent !tmux display-popup -E -d" .. proj_dir
 
-        local sleep = "; sleep " .. sleep_duration .. "'"
+    local dimensions = " -w " .. M.config.overlay_width_percent .. "\\% -h " .. M.config.overlay_height_percent .. "\\% '"
 
-        vim.cmd(cmd_head .. dimensions .. cmd .. sleep)
-    else
-        print("Error: Command not found for this extension")
-    end
+    local sleep = "; sleep " .. sleep_duration .. "'"
+
+    vim.cmd(cmd_head .. dimensions .. cmd .. sleep)
 end
 
 -- run command in same window on a new pane
-local function split_window(cmd, side)
-    if cmd then
-        local cmd_head = "silent !tmux split-window " .. side
-        vim.cmd(cmd_head .. " '" .. cmd .. "; exec zsh'")
-    else
-        print("Error: Command not found for this extension")
+local function split_window(cmd, side, error_name)
+    if not cmd then
+        local extension = get_file_extension()
+        print("Error: " .. error_name ..  " command not found for " .. extension)
+        return 1
     end
+
+    local cmd_head = "silent !tmux split-window " .. side
+    vim.cmd(cmd_head .. " '" .. cmd .. "; exec zsh'")
 end
 
 -- run lazygit in an overlay pane