Add keymaps and commands for turning off/on auto formatting on save.

home/.config/nvim/lua/format_handler.lua

@@ -0,0 +1,44 @@
+local utils = require("utils")
+local M = {}
+M.format_on_save = true
+
+function M.format(force)
+    local do_force = force or false
+    if M.format_on_save or do_force then
+        vim.lsp.buf.format()
+    end
+end
+
+function M.format_enable()
+    M.format_on_save = true
+end
+
+function M.format_disable()
+    M.format_on_save = false
+end
+
+function M.setup()
+    local user_commands = {
+        { "FormatEnable",  "lua require('format_handler').format_enable()" },
+        { "FormatDisable", "lua require('format_handler').format_disable()" },
+    }
+    for _, cmd in ipairs(user_commands) do
+        vim.api.nvim_command("command! " .. cmd[1] .. " " .. cmd[2])
+    end
+
+    utils.add_keymaps({
+        n = {
+            ["<leader>ff"] = {
+                cmd = function() M.format(true) end
+            },
+            ["<leader>fe"] = {
+                cmd = M.format_enable,
+            },
+            ["<leader>fd"] = {
+                cmd = M.format_disable,
+            },
+        },
+    })
+end
+
+return M