diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a6c57f5
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.json
diff --git a/lua/base/tabs.lua b/lua/base/tabs.lua
index 2cc434a..6e75514 100644
--- a/lua/base/tabs.lua
+++ b/lua/base/tabs.lua
@@ -5,20 +5,21 @@ local g = vim.g
 -- Set the numbers of whitespace characters when shifting with "<" or ">".
 -- In fact, in spite of expandtab, the terminal still displays whitespace charaters, 
 -- so let's set the number of whitespace characters for ones press of these buttons.
-opt.shiftwidth = 2
+opt.shiftwidth = 4
 
 -- one tab == two whitespace characters in new line.
 -- Pressing <CR> will insert tabs. Tabs are drawn as whitespace. 
 -- that's why we have to set that each tab on a new line is two whitespace.
-opt.tabstop = 2
+opt.tabstop = 4
 
--- Adjust new line to the previous indentation
+-- Adjust new line to the previous indentation.
 opt.smartindent = true
 
-opt.expandtab = false
+-- On pressing tab, insert 4 spaces.
+opt.expandtab = true
 opt.smarttab = true
 opt.scrolloff = 8
 
--- Show unprintable
+-- Show unprintable.
 opt.list = true
 opt.listchars = {tab = '⁞ ', eol = '¬', trail = '·'}
diff --git a/lua/plugins/lazy.lua b/lua/plugins/lazy.lua
index 0560524..00e4751 100644
--- a/lua/plugins/lazy.lua
+++ b/lua/plugins/lazy.lua
@@ -13,252 +13,252 @@ vim.opt.rtp:prepend(lazypath)
 
 -- Install plugins using lazy
 require('lazy').setup({
-	{ 'tpope/vim-commentary', },
-	{ 'tpope/vim-fugitive', },
-	{ 'sheerun/vim-polyglot',
-		init = function()
-			-- vim-polyglot confusingly registers *.comp both for perl and for glsl
-			vim.api.nvim_set_var('polyglot_disabled', {'perl'})
-		end,
-	},
-	{
-		'morhetz/gruvbox',
-		lazy = false,
-		priority = 1000,
-		config = function()
-			vim.opt.background = 'dark'
-			vim.g.gruvbox_italic = 1
-			vim.cmd([[colorscheme gruvbox]])
-		end,
-	},
-	{
-		"folke/tokyonight.nvim",
-		lazy = true,
-		-- config = function()
-		--   -- load the colorscheme here
-		--   vim.cmd([[colorscheme tokyonight]])
-		-- end,
-	},
-	{ 'nvim-telescope/telescope-fzf-native.nvim',
-		build = 'cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release && cmake --build build --config Release && cmake --install build --prefix build'
-	},
-	{
-		'nvim-telescope/telescope.nvim', tag = '0.1.6',
-		dependencies = { 'nvim-lua/plenary.nvim' },
-		config = function()
-			local telescope = require('telescope')
+    { 'tpope/vim-commentary', },
+    { 'tpope/vim-fugitive', },
+    { 'sheerun/vim-polyglot',
+        init = function()
+            -- vim-polyglot confusingly registers *.comp both for perl and for glsl
+            vim.api.nvim_set_var('polyglot_disabled', {'perl'})
+        end,
+    },
+    {
+        'morhetz/gruvbox',
+        lazy = false,
+        priority = 1000,
+        config = function()
+            vim.opt.background = 'dark'
+            vim.g.gruvbox_italic = 1
+            vim.cmd([[colorscheme gruvbox]])
+        end,
+    },
+    {
+        "folke/tokyonight.nvim",
+        lazy = true,
+        -- config = function()
+        --   -- load the colorscheme here
+        --   vim.cmd([[colorscheme tokyonight]])
+        -- end,
+    },
+    { 'nvim-telescope/telescope-fzf-native.nvim',
+        build = 'cmake -S. -Bbuild -DCMAKE_BUILD_TYPE=Release && cmake --build build --config Release && cmake --install build --prefix build'
+    },
+    {
+        'nvim-telescope/telescope.nvim', tag = '0.1.6',
+        dependencies = { 'nvim-lua/plenary.nvim' },
+        config = function()
+            local telescope = require('telescope')
 
-			telescope.setup{
-				-- defaults = {
-				-- }
-				extensions = {
-					fzf = {
-						fuzzy = true,                    -- false will only do exact matching
-						override_generic_sorter = true,  -- override the generic sorter
-						override_file_sorter = true,     -- override the file sorter
-						case_mode = "smart_case",        -- or "ignore_case" or "respect_case"
-																						 -- the default case_mode is "smart_case"
-					}
-				}
-			}
+            telescope.setup{
+                -- defaults = {
+                -- }
+                extensions = {
+                    fzf = {
+                        fuzzy = true,                    -- false will only do exact matching
+                        override_generic_sorter = true,  -- override the generic sorter
+                        override_file_sorter = true,     -- override the file sorter
+                        case_mode = "smart_case",        -- or "ignore_case" or "respect_case"
+                                                                                         -- the default case_mode is "smart_case"
+                    }
+                }
+            }
 
-			--telescope.load_extension('fzy')
-			telescope.load_extension('fzf')
+            --telescope.load_extension('fzy')
+            telescope.load_extension('fzf')
 
-			local builtin = require('telescope.builtin')
-			vim.keymap.set('n', '<C-p>', builtin.find_files, {})
-			vim.keymap.set('n', '<leader>ft', builtin.treesitter, {})
-			vim.keymap.set('n', '<leader>fg', builtin.live_grep, {})
-			vim.keymap.set('n', '<leader>fb', builtin.buffers, {})
-			vim.keymap.set('n', '<leader>fh', builtin.help_tags, {})
-		end
-	},
-	{ "nvim-treesitter/nvim-treesitter",
-		build = ":TSUpdate",
-		config = function()
-			require("nvim-treesitter.configs").setup {
-				ensure_installed = { "c", "cpp", "pascal", "lua", "glsl", "yaml" },
-				highlight = { enable = true, }
-			}
-		end
-	},
-	{
-		'neovim/nvim-lspconfig',
-		config = function()
-			-- Setup language servers.
-			local lspconfig = require('lspconfig')
-			lspconfig.clangd.setup {}
-			lspconfig.neocmake.setup {}
+            local builtin = require('telescope.builtin')
+            vim.keymap.set('n', '<C-p>', builtin.find_files, {})
+            vim.keymap.set('n', '<leader>ft', builtin.treesitter, {})
+            vim.keymap.set('n', '<leader>fg', builtin.live_grep, {})
+            vim.keymap.set('n', '<leader>fb', builtin.buffers, {})
+            vim.keymap.set('n', '<leader>fh', builtin.help_tags, {})
+        end
+    },
+    { "nvim-treesitter/nvim-treesitter",
+        build = ":TSUpdate",
+        config = function()
+            require("nvim-treesitter.configs").setup {
+                ensure_installed = { "c", "cpp", "pascal", "lua", "glsl", "yaml" },
+                highlight = { enable = true, }
+            }
+        end
+    },
+    {
+        'neovim/nvim-lspconfig',
+        config = function()
+            -- Setup language servers.
+            local lspconfig = require('lspconfig')
+            --lspconfig.clangd.setup {}
+            --lspconfig.neocmake.setup {}
 
-			-- Global mappings.
-			-- See `:help vim.diagnostic.*` for documentation on any of the below functions
-			vim.keymap.set('n', '<space>e', vim.diagnostic.open_float)
-			vim.keymap.set('n', '[d', vim.diagnostic.goto_prev)
-			vim.keymap.set('n', ']d', vim.diagnostic.goto_next)
-			vim.keymap.set('n', '<space>q', vim.diagnostic.setloclist)
+            -- Global mappings.
+            -- See `:help vim.diagnostic.*` for documentation on any of the below functions
+            vim.keymap.set('n', '<space>e', vim.diagnostic.open_float)
+            vim.keymap.set('n', '[d', vim.diagnostic.goto_prev)
+            vim.keymap.set('n', ']d', vim.diagnostic.goto_next)
+            vim.keymap.set('n', '<space>q', vim.diagnostic.setloclist)
 
-			-- Use LspAttach autocommand to only map the following keys
-			-- after the language server attaches to the current buffer
-			vim.api.nvim_create_autocmd('LspAttach', {
-				group = vim.api.nvim_create_augroup('UserLspConfig', {}),
-				callback = function(ev)
-					-- Enable completion triggered by <c-x><c-o>
-					vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'
+            -- Use LspAttach autocommand to only map the following keys
+            -- after the language server attaches to the current buffer
+            vim.api.nvim_create_autocmd('LspAttach', {
+                group = vim.api.nvim_create_augroup('UserLspConfig', {}),
+                callback = function(ev)
+                    -- Enable completion triggered by <c-x><c-o>
+                    vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'
 
-					-- Buffer local mappings.
-					-- See `:help vim.lsp.*` for documentation on any of the below functions
-					local opts = { buffer = ev.buf }
-					vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, opts)
-					vim.keymap.set('n', 'gd', vim.lsp.buf.definition, opts)
-					vim.keymap.set('n', 'K', vim.lsp.buf.hover, opts)
-					vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, opts)
-					vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, opts)
-					vim.keymap.set('n', '<space>wa', vim.lsp.buf.add_workspace_folder, opts)
-					vim.keymap.set('n', '<space>wr', vim.lsp.buf.remove_workspace_folder, opts)
-					vim.keymap.set('n', '<space>wl', function()
-						print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
-					end, opts)
-					vim.keymap.set('n', '<space>D', vim.lsp.buf.type_definition, opts)
-					vim.keymap.set('n', '<space>rn', vim.lsp.buf.rename, opts)
-					vim.keymap.set({ 'n', 'v' }, '<space>ca', vim.lsp.buf.code_action, opts)
-					vim.keymap.set('n', 'gr', vim.lsp.buf.references, opts)
-					vim.keymap.set('n', '<space>f', function()
-						vim.lsp.buf.format { async = true }
-					end, opts)
-				end,
-			})
-		end
-	},
-	{
-		'hrsh7th/nvim-cmp',
-		dependencies = {
-			'neovim/nvim-lspconfig',
-			'hrsh7th/cmp-nvim-lsp',
-			'hrsh7th/cmp-buffer',
-			'hrsh7th/cmp-path',
-			'hrsh7th/cmp-cmdline',
-			'hrsh7th/cmp-vsnip',
-			'hrsh7th/vim-vsnip',
-			'hrsh7th/cmp-nvim-lsp-signature-help',
-		},
-		config = function()
-			local cmp = require'cmp'
-			cmp.setup({
-				snippet = {
-					-- REQUIRED - you must specify a snippet engine
-					expand = function(args)
-						vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
-						-- require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
-						-- require('snippy').expand_snippet(args.body) -- For `snippy` users.
-						-- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
-					end,
-				},
-				window = {
-					-- completion = cmp.config.window.bordered(),
-					-- documentation = cmp.config.window.bordered(),
-				},
-				mapping = cmp.mapping.preset.insert({
-					['<C-b>'] = cmp.mapping.scroll_docs(-4),
-					['<C-f>'] = cmp.mapping.scroll_docs(4),
-					['<C-Space>'] = cmp.mapping.complete(),
-					['<C-e>'] = cmp.mapping.abort(),
-					['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
-				}),
-				sources = cmp.config.sources({
-					{ name = 'nvim_lsp' },
-					{ name = 'vsnip' }, -- For vsnip users.
-					-- { name = 'luasnip' }, -- For luasnip users.
-					-- { name = 'ultisnips' }, -- For ultisnips users.
-					-- { name = 'snippy' }, -- For snippy users.
-				}, {
-					{ name = 'buffer' },
-					{ name = 'nvim_lsp_signature_help' },
-				})
-			})
+                    -- Buffer local mappings.
+                    -- See `:help vim.lsp.*` for documentation on any of the below functions
+                    local opts = { buffer = ev.buf }
+                    vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, opts)
+                    vim.keymap.set('n', 'gd', vim.lsp.buf.definition, opts)
+                    vim.keymap.set('n', 'K', vim.lsp.buf.hover, opts)
+                    vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, opts)
+                    vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, opts)
+                    vim.keymap.set('n', '<space>wa', vim.lsp.buf.add_workspace_folder, opts)
+                    vim.keymap.set('n', '<space>wr', vim.lsp.buf.remove_workspace_folder, opts)
+                    vim.keymap.set('n', '<space>wl', function()
+                        print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
+                    end, opts)
+                    vim.keymap.set('n', '<space>D', vim.lsp.buf.type_definition, opts)
+                    vim.keymap.set('n', '<space>rn', vim.lsp.buf.rename, opts)
+                    vim.keymap.set({ 'n', 'v' }, '<space>ca', vim.lsp.buf.code_action, opts)
+                    vim.keymap.set('n', 'gr', vim.lsp.buf.references, opts)
+                    vim.keymap.set('n', '<space>f', function()
+                        vim.lsp.buf.format { async = true }
+                    end, opts)
+                end,
+            })
+        end
+    },
+    {
+        'hrsh7th/nvim-cmp',
+        dependencies = {
+            'neovim/nvim-lspconfig',
+            'hrsh7th/cmp-nvim-lsp',
+            'hrsh7th/cmp-buffer',
+            'hrsh7th/cmp-path',
+            'hrsh7th/cmp-cmdline',
+            'hrsh7th/cmp-vsnip',
+            'hrsh7th/vim-vsnip',
+            'hrsh7th/cmp-nvim-lsp-signature-help',
+        },
+        config = function()
+            local cmp = require'cmp'
+            cmp.setup({
+                snippet = {
+                    -- REQUIRED - you must specify a snippet engine
+                    expand = function(args)
+                        vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
+                        -- require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
+                        -- require('snippy').expand_snippet(args.body) -- For `snippy` users.
+                        -- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
+                    end,
+                },
+                window = {
+                    -- completion = cmp.config.window.bordered(),
+                    -- documentation = cmp.config.window.bordered(),
+                },
+                mapping = cmp.mapping.preset.insert({
+                    ['<C-b>'] = cmp.mapping.scroll_docs(-4),
+                    ['<C-f>'] = cmp.mapping.scroll_docs(4),
+                    ['<C-Space>'] = cmp.mapping.complete(),
+                    ['<C-e>'] = cmp.mapping.abort(),
+                    ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
+                }),
+                sources = cmp.config.sources({
+                    { name = 'nvim_lsp' },
+                    { name = 'vsnip' }, -- For vsnip users.
+                    -- { name = 'luasnip' }, -- For luasnip users.
+                    -- { name = 'ultisnips' }, -- For ultisnips users.
+                    -- { name = 'snippy' }, -- For snippy users.
+                }, {
+                    { name = 'buffer' },
+                    { name = 'nvim_lsp_signature_help' },
+                })
+            })
 
-			-- Set configuration for specific filetype.
-			cmp.setup.filetype('gitcommit', {
-				sources = cmp.config.sources({
-					{ name = 'git' }, -- You can specify the `git` source if [you were installed it](https://github.com/petertriho/cmp-git).
-				}, {
-					{ name = 'buffer' },
-				})
-			})
-						
-			cmp.setup.filetype('cmake', {
-				sources = cmp.config.sources({
-					{ name = 'cmake', "CMakeLists.txt" },
-				}, {
-					{ name = 'buffer' },
-				})
-			})
+            -- Set configuration for specific filetype.
+            cmp.setup.filetype('gitcommit', {
+                sources = cmp.config.sources({
+                    { name = 'git' }, -- You can specify the `git` source if [you were installed it](https://github.com/petertriho/cmp-git).
+                }, {
+                    { name = 'buffer' },
+                })
+            })
 
-			-- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
-			cmp.setup.cmdline({ '/', '?' }, {
-				mapping = cmp.mapping.preset.cmdline(),
-				sources = {
-					{ name = 'buffer' }
-				}
-			})
+            cmp.setup.filetype('cmake', {
+                sources = cmp.config.sources({
+                    { name = 'cmake', "CMakeLists.txt" },
+                }, {
+                    { name = 'buffer' },
+                })
+            })
 
-			-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
-			cmp.setup.cmdline(':', {
-				mapping = cmp.mapping.preset.cmdline(),
-				sources = cmp.config.sources({
-					{ name = 'path' }
-				}, {
-					{ name = 'cmdline' }
-				})
-			})
+            -- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
+            cmp.setup.cmdline({ '/', '?' }, {
+                mapping = cmp.mapping.preset.cmdline(),
+                sources = {
+                    { name = 'buffer' }
+                }
+            })
 
-			-- Set up lspconfig.
-			local capabilities = require('cmp_nvim_lsp').default_capabilities()
-			-- TODO Replace <YOUR_LSP_SERVER> with each lsp server you've enabled.
-			require('lspconfig')['clangd'].setup {
-				capabilities = capabilities
-			}
-		end,
-	},
-	{
-		'stevearc/aerial.nvim',
-		dependencies = { 'neovim/nvim-lspconfig', },
-		config = function()
-			require('aerial').setup({
-				-- optionally use on_attach to set keymaps when aerial has attached to a buffer
-				on_attach = function(bufnr)
-					-- Jump forwards/backwards with '{' and '}'
-					vim.keymap.set('n', '{', '<cmd>AerialPrev<CR>', {buffer = bufnr})
-					vim.keymap.set('n', '}', '<cmd>AerialNext<CR>', {buffer = bufnr})
-				end
-			})
-			-- You probably also want to set a keymap to toggle aerial
-			vim.keymap.set('n', '<F8>', '<cmd>AerialToggle!<CR>')
-		end,
-	}
+            -- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
+            cmp.setup.cmdline(':', {
+                mapping = cmp.mapping.preset.cmdline(),
+                sources = cmp.config.sources({
+                    { name = 'path' }
+                }, {
+                    { name = 'cmdline' }
+                })
+            })
+
+            -- Set up lspconfig.
+            local capabilities = require('cmp_nvim_lsp').default_capabilities()
+            -- TODO Replace <YOUR_LSP_SERVER> with each lsp server you've enabled.
+            --[[require('lspconfig')['clangd'].setup {
+                capabilities = capabilities
+            }--]]
+        end,
+    },
+    {
+        'stevearc/aerial.nvim',
+        dependencies = { 'neovim/nvim-lspconfig', },
+        config = function()
+            require('aerial').setup({
+                -- optionally use on_attach to set keymaps when aerial has attached to a buffer
+                on_attach = function(bufnr)
+                    -- Jump forwards/backwards with '{' and '}'
+                    vim.keymap.set('n', '{', '<cmd>AerialPrev<CR>', {buffer = bufnr})
+                    vim.keymap.set('n', '}', '<cmd>AerialNext<CR>', {buffer = bufnr})
+                end
+            })
+            -- You probably also want to set a keymap to toggle aerial
+            vim.keymap.set('n', '<F8>', '<cmd>AerialToggle!<CR>')
+        end,
+    }
 })
 
 vim.filetype.add({
-	extension = {
-		vp = 'glsl',
-		fp = 'glsl',
-		gp = 'glsl',
-		vs = 'glsl',
-		fs = 'glsl',
-		gs = 'glsl',
-		tcs = 'glsl',
-		tes = 'glsl',
-		cs = 'glsl',
-		vert = 'glsl',
-		frag = 'glsl',
-		geom = 'glsl',
-		tess = 'glsl',
-		shd = 'glsl',
-		gls = 'glsl',
-		glsl = 'glsl',
-		rgen = 'glsl',
-		comp = 'glsl',
-		rchit = 'glsl',
-		rahit = 'glsl',
-		rmiss = 'glsl',
-	}
+    extension = {
+        vp = 'glsl',
+        fp = 'glsl',
+        gp = 'glsl',
+        vs = 'glsl',
+        fs = 'glsl',
+        gs = 'glsl',
+        tcs = 'glsl',
+        tes = 'glsl',
+        cs = 'glsl',
+        vert = 'glsl',
+        frag = 'glsl',
+        geom = 'glsl',
+        tess = 'glsl',
+        shd = 'glsl',
+        gls = 'glsl',
+        glsl = 'glsl',
+        rgen = 'glsl',
+        comp = 'glsl',
+        rchit = 'glsl',
+        rahit = 'glsl',
+        rmiss = 'glsl',
+    }
 })