improve nav_in insertmode (#240)

lua/chadrc.lua

@@ -23,7 +23,8 @@ local M = {
         shiftwidth = 2,
         smartindent = true,
         mapleader = " ",
-        autosave = false
+        autosave = false,
+        enable_insertNav = true -- navigation within insertmode
     },
     -- enable / disable plugins (true for disable)
     plugin_status = {
@@ -103,12 +104,13 @@ local M = {
             toggle_right = "<leader>v",
             toggle_bot = "<leader>h"
         },
-        unix_keymap = {
+        insert_nav = {
-          toggle_unix_keymap = "<leader>k",
+            forward = "<C-l>",
-          forward = "<C-f>",
+            backward = "<C-h>",
-          backward = "<C-b>",
             top_of_line = "<C-a>",
-          end_of_line = "<C-e>"
+            end_of_line = "<C-e>",
+            prev_line = "<C-j>",
+            next_line = "<C-k>"
         },
         misc = {
             esc_Termmode = "jk",

lua/mappings.lua

@@ -24,45 +24,6 @@ map("v", "x", [=[ "_x ]=], opt)
  this line too ]]
 --
 
--- toggle unix readline's keymap
-map("n", user_map.unix_keymap.toggle_unix_keymap,"<cmd>lua require 'mappings'.unix_keymap()<CR>",{nowait = true})
-
-local _cmap_containp = function (key)
-  local cmap_tab = vim.api.nvim_get_keymap("c")
-
-  for _, value in ipairs(cmap_tab) do
-    if value['lhs'] == key then
-      return true
-    end
-  end
-  return false
-end
-
-M.unix_keymap = function()
-  local m = user_map.unix_keymap
-
-  if _cmap_containp("<C-A>") then
-    vim.api.nvim_del_keymap("i", m.forward)
-    vim.api.nvim_del_keymap("i", m.backward)
-    vim.api.nvim_del_keymap("i", m.top_of_line)
-    vim.api.nvim_del_keymap("i", m.end_of_line)
-    vim.api.nvim_del_keymap("c", m.forward)
-    vim.api.nvim_del_keymap("c", m.backward)
-    vim.api.nvim_del_keymap("c", m.top_of_line)
-    vim.api.nvim_del_keymap("c", m.end_of_line)
-  else
-    map("i", m.forward, '<Right>', opt)
-    map("i", m.backward, '<Left>', opt)
-    map("i", m.top_of_line, '<ESC>^i', opt)
-    map("i", m.end_of_line, '<End>', opt)
-    vim.api.nvim_set_keymap("c", m.forward, '<Right>', {noremap = true})
-    vim.api.nvim_set_keymap("c", m.backward, '<Left>', {noremap = true})
-    vim.api.nvim_set_keymap("c", m.top_of_line, '<Home>', {noremap = true})
-    vim.api.nvim_set_keymap("c", m.end_of_line, '<End>', {noremap = true})
-  end
-end
-
-
 -- Don't copy the replaced text after pasting in visual mode
 map("v", "p", '"_dP', opt)
 
@@ -185,4 +146,18 @@ M.fugitive = function()
     map("n", m.git_blame, ":Git blame<CR>", opt)
 end
 
+-- navigation within insert mode
+local check_insertNav = require("chadrc").options.enable_insertNav
+
+if check_insertNav == true then
+    local m = user_map.insert_nav
+
+    map("i", m.forward, "<Right>", opt)
+    map("i", m.backward, "<Left>", opt)
+    map("i", m.top_of_line, "<ESC>^i", opt)
+    map("i", m.end_of_line, "<End>", opt)
+    map("i", m.next_line, "<Up>", opt)
+    map("i", m.prev_line, "<Down>", opt)
+end
+
 return M