neovim-confs/lua/custom/init.lua

local opt = vim.opt
local g = vim.g
g.maplocalleader = ";"

opt.mouse = "a"    -- mouse does annoying things for me if it's not 'a'
opt.signcolumn = "yes"
opt.clipboard = "" -- don't just use the system clipboard
opt.wrap = false
opt.breakindent = false
opt.spell = false
opt.list = true
opt.conceallevel = 2
opt.undofile = true
opt.undolevels = 10000
opt.writebackup = false
opt.history = 5000
opt.shada = { "'1000", "<50", "s10", "h" }

-- Tabs and Indents
-- ===

opt.textwidth = 80     -- Text width maximum chars before wrapping
opt.tabstop = 4        -- The number of spaces a tab is
opt.shiftwidth = 4     -- Number of spaces to use in auto(indent)
opt.smarttab = true    -- Tab insert blanks according to 'shiftwidth'
opt.autoindent = true  -- Use same indenting on new lines
opt.smartindent = true -- Smart autoindenting on new lines
opt.shiftround = true  -- Round indent to multiple of 'shiftwidth'

-- Timing
-- ===
opt.ttimeout = true
opt.timeoutlen = 500 -- Time out on mappings
opt.ttimeoutlen = 10 -- Time out on key codes
opt.updatetime = 500 -- Idle time to write swap and trigger CursorHold

-- Searching
-- ===
opt.ignorecase = true -- Search ignoring case
opt.smartcase = true  -- Keep case when searching with *
opt.infercase = true  -- Adjust case in insert completion mode
opt.incsearch = true  -- Incremental search

-- Formatting
-- ===

opt.wrap = false            -- No wrap by default
opt.linebreak = true        -- Break long lines at 'breakat'
opt.breakat = "\\ \\	;:,!?" -- Long lines break chars
opt.startofline = false     -- Cursor in same column for few commands
opt.splitbelow = true       -- Splits open bottom right
opt.splitright = true
opt.breakindentopt = { shift = 2, min = 20 }
opt.formatoptions = "qnlmBjp" -- see :h fo-table & :h formatoptions

-- Diff
-- ===

opt.diffopt:append { "iwhite", "indent-heuristic", "algorithm:patience" }
opt.wildmode = "longest:full,full" -- Command-line completion mode

-- Folds
-- ===

opt.foldlevel = 10 -- start with all folds open

-- Editor UI
-- ===

vim.o.guifont = "FiraCode Nerd Font:h22"
opt.termguicolors = true
opt.shortmess = "xsTOInfFitloCaAs"
opt.showmode = true   -- Show mode in cmd window
opt.scrolloff = 2     -- Keep at least n lines above/below
opt.sidescrolloff = 0 -- Keep at least n lines left/right
opt.numberwidth = 2   -- Minimum number of columns to use for the line number
opt.number = true     -- Show line numbers
opt.ruler = true      -- Default status ruler
opt.list = true       -- Show hidden characters
opt.showtabline = 1   -- Don't change this, goes back to a vanilla vim default
opt.laststatus = 3    -- Always show laststatus

if vim.g.started_by_firenvim == true then
    opt.showtabline = 1 -- Don't show tabline in firenvim, unless multitab
    opt.laststatus = 1 -- Don't show laststatus in firenvim
    opt.wrap = true
end

opt.helpheight = 0     -- Disable help window resizing
opt.winwidth = 30      -- Minimum width for active window
opt.winminwidth = 1    -- Minimum width for inactive windows
opt.winheight = 1      -- Minimum height for active window
opt.winminheight = 1   -- Minimum height for inactive window

opt.showcmd = false    -- show command in status line
opt.cmdheight = 0
opt.cmdwinheight = 5   -- Command-line lines
opt.equalalways = true -- Resize windows on split or close
opt.colorcolumn = "+0" -- Column highlight at textwidth's max character-limit

opt.cursorline = true
opt.cursorlineopt = { "number", "screenline" }

opt.pumheight = 10 -- Maximum number of items to show in the popup menu
opt.pumwidth = 10  -- Minimum width for the popup menu
opt.pumblend = 10  -- Popup blend

-- Spelling correction
-- ===

opt.spell = false -- manually enable spell with `set spell` or `<leader>ts`
opt.spelllang = "en,de_de,"
opt.spellsuggest = "double,50,timeout:5000"

-- autocommands
-- ===
local function augroup(name)
    return vim.api.nvim_create_augroup("plex_" .. name, {})
end

-- highlight on yank
vim.api.nvim_create_autocmd("TextYankPost", {
    group = augroup "highlight_yank",
    callback = function()
        vim.highlight.on_yank()
    end,
})

-- Disable conceallevel for specific file-types.
vim.api.nvim_create_autocmd("FileType", {
    group = augroup "fix_conceallevel",
    pattern = { "latex", "tex" },
    callback = function()
        vim.opt_local.conceallevel = 0
    end,
})

-- Resize splits if window got resized
vim.api.nvim_create_autocmd("VimResized", {
    group = augroup "resize_splits",
    callback = function()
        vim.cmd "wincmd ="
    end,
})

-- Wrap and enable spell-checker in text filetypes
vim.api.nvim_create_autocmd("FileType", {
    group = augroup "spell_conceal",
    pattern = { "gitcommit", "markdown", "tex", "latex", "norg" },
    callback = function()
        vim.opt_local.spell = true
        vim.opt_local.conceallevel = 0
    end,
})

-- map resizing for firenvim
if vim.g.started_by_firenvim == true then
    vim.keymap.set("n", "<leader><C-DOWN>", function()
        vim.o.lines = vim.o.lines + 1
    end, { expr = true, desc = "Make Display bigger" })
    vim.keymap.set("n", "<leader><C-UP>", function()
        vim.o.lines = vim.o.lines - 1
    end, { expr = true, desc = "Make Display smaller" })
end

-- alias filetypes
vim.filetype.add { extension = { tera = 'html' } }