nichijou: nvim: init lua config

nichijou/home/config/nvim/init.lua

@@ -0,0 +1,173 @@
+function map(mode, shortcut, command)
+  vim.api.nvim_set_keymap(mode, shortcut, command, { noremap = true, silent = true })
+end
+
+function nmap(shortcut, command)
+  map('n', shortcut, command)
+end
+
+function imap(shortcut, command)
+  map('i', shortcut, command)
+end
+
+
+---------------------------------------------------
+-- General
+---------------------------------------------------
+
+-- Set the amount of lines of history to remember.
+vim.opt.history = 100
+
+-- Set a mapleader key. This is used for extra key combinations.
+vim.g.mapleader = "\\"
+nmap("<Space>", "<leader>")
+
+-- Better command line completion.
+vim.opt.wildmenu = true
+vim.opt.wildmode = "list:longest,full"
+
+-- Ignore compiled and binary files.
+vim.opt.wildignore = "*.o,*~,*.pyc,*.png,*.pdf"
+
+-- Filetypes
+vim.api.nvim_create_autocmd(
+    {
+        "BufNewFile",
+        "BufRead",
+    },
+    {
+        pattern = "*.irst",
+        callback = function()
+            local buf = vim.api.nvim_get_current_buf()
+            vim.api.nvim_buf_vim.opt_option(buf, "filetype", "rst")
+        end
+    }
+)
+
+vim.api.nvim_create_autocmd(
+    {
+        "BufNewFile",
+        "BufRead",
+    },
+    {
+        pattern = "*.puml",
+        callback = function()
+            local buf = vim.api.nvim_get_current_buf()
+            vim.api.nvim_buf_vim.opt_option(buf, "filetype", "plantuml")
+        end
+    }
+)
+
+vim.api.nvim_create_autocmd(
+    {
+        "BufNewFile",
+        "BufRead",
+    },
+    {
+        pattern = "*.tikz",
+        callback = function()
+            local buf = vim.api.nvim_get_current_buf()
+            vim.api.nvim_buf_vim.opt_option(buf, "filetype", "tex")
+        end
+    }
+)
+
+vim.api.nvim_create_autocmd(
+    {
+        "BufNewFile",
+        "BufRead",
+    },
+    {
+        pattern = "*.tpp",
+        callback = function()
+            local buf = vim.api.nvim_get_current_buf()
+            vim.api.nvim_buf_vim.opt_option(buf, "filetype", "cpp")
+        end
+    }
+)
+
+-- TODO: Restore last known cursor position, see https://github.com/neovim/neovim/issues/16339.
+
+-- Set the swap directory to ~/.cache/nvim/swap.
+local cache = vim.env.XDG_CACHE_HOME or vim.fn.expand("~/.cache")
+local swap = cache .. "/nvim/swap"
+if vim.fn.isdirectory(swap) == 0 then
+    vim.fn.mkdir(swap, 'p', 0700)
+end
+-- The extra '/' suffix is required to make vim create unique filenames.
+-- XXX: Not sure if this is required in neovim however.
+vim.opt.dir = { swap .. "//" }
+
+-- Use system clipboard by default.
+vim.opt.clipboard = "unnamedplus"
+
+---------------------------------------------------
+-- User interface
+---------------------------------------------------
+
+-- Display line numbers.
+vim.opt.number = true
+vim.opt.relativenumber = true
+
+-- Show the (partial) command in status line.
+vim.opt.showcmd = true
+
+-- Always display the status line, even if only one window is displayed.
+vim.opt.laststatus = 2
+
+-- Shows a dialogue asking if the file has to be saved, instead of raising an
+-- error.
+vim.opt.confirm = true
+
+-- Keep the cursor in the centre of the buffer if possible.
+vim.opt.scrolloff = 10000
+
+-- Disable automatic folding.
+-- vim.opt.nofoldenable = true
+
+-- Delete the current buffer without closing the windows
+nmap("<leader>bd", ":Bdelete<CR>")
+-- Close window
+nmap("<leader>wd", ":q<CR>")
+-- Vertical split
+nmap("<leader>wv", ":vsplit<CR>")
+-- Horizontal split
+nmap("<leader>wh", ":split<CR>")
+-- Exit vim
+nmap("<leader>qq", ":qa<CR>")
+
+-- Easy vertical terminal split opening (why is this not built-in?)
+-- cnoreabbrev vterm vert term
+
+-- Set filetype.
+vim.opt.ffs = "unix"
+
+vim.opt.termguicolors = true
+vim.opt.colorcolumn = "80"
+
+vim.opt.splitbelow = true
+vim.opt.splitright = true
+
+---------------------------------------------------
+-- Search
+--------------------------------------------------
+
+vim.opt.ignorecase = true
+
+vim.opt.smartcase = true
+
+nmap("<C-L>", ":nohl<CR><C-L>")
+
+vim.env.MANSECT = "3p:3:2:1:n:l:8:0:5:4:9:6:7"
+
+
+---------------------------------------------------
+-- Text (tab, spaces, indent)
+---------------------------------------------------
+
+vim.bo.softtabstop = 2
+vim.opt.autoindent = true
+vim.opt.expandtab = true
+vim.opt.listchars = { tab = "»-", trail = "·" }
+vim.opt.shiftwidth = 2
+vim.opt.tabstop = 2