neovim: Adding makefile extension. Thanks @adibhanna.

roles/neovim/files/lua/plugins/telescope.lua

@@ -238,6 +238,7 @@ return {
             },
           })
         },
+        telescope.load_extension('makefile_targets'),
       },
     }
     -- local M = {}

roles/neovim/files/lua/telescope/_extensions/makefile_targets.lua

@@ -0,0 +1,63 @@
+local pickers = require("telescope.pickers")
+local finders = require("telescope.finders")
+local conf = require("telescope.config").values
+local actions = require("telescope.actions")
+local action_state = require("telescope.actions.state")
+
+local function extract_makefile_targets(makefile_path)
+    local targets = {}
+    for line in io.lines(makefile_path) do
+        local target = line:match("^([%w-]+):")
+        if target then
+            table.insert(targets, target)
+        end
+    end
+    return targets
+end
+
+local function run_make_command(target)
+    local command = "make " .. target
+    local output = vim.fn.system(command)
+
+    -- Open a new split window and show the output
+    vim.cmd("new")
+    local buf = vim.api.nvim_get_current_buf()
+    vim.api.nvim_buf_set_lines(buf, 0, -1, false, vim.split(output, "\n"))
+    vim.api.nvim_buf_set_option(buf, "modifiable", false)
+    vim.api.nvim_buf_set_name(buf, "Make Output: " .. target)
+end
+
+local makefile_targets = function(opts)
+    opts = opts or {}
+    local makefile_path = vim.fn.findfile("Makefile", ".;")
+
+    if makefile_path == "" then
+        print("No Makefile found in the current directory or its parents")
+        return
+    end
+
+    local targets = extract_makefile_targets(makefile_path)
+
+    pickers.new(opts, {
+        prompt_title = "Makefile Targets",
+        finder = finders.new_table {
+            results = targets
+        },
+        sorter = conf.generic_sorter(opts),
+        attach_mappings = function(prompt_bufnr, map)
+            actions.select_default:replace(function()
+                actions.close(prompt_bufnr)
+                local selection = action_state.get_selected_entry()
+                run_make_command(selection[1])
+            end)
+            return true
+        end,
+    }):find()
+end
+
+vim.api.nvim_create_user_command("MakefileTargets", makefile_targets, {})
+return require("telescope").register_extension({
+    exports = {
+        makefile_targets = makefile_targets
+    },
+})