options.nix

# Neovim options
# Use :options to get the list of all options
# Use :h <option> to load help for given <option>
{
  opts = {
    # Don't stop backspace at insert
    backspace.__raw = ''
      vim.list_extend(vim.opt.backspace:get(), { "nostop" })
    '';

    # Keep visual indentation on wrapped lines
    breakindent = true;

    # Hide command line unless needed
    cmdheight = 0;

    # Insert mode completion options
    completeopt = [ "menu" "menuone" "noselect" ];

    # Raise a dialog asking if you wish to save the current file(s)
    confirm = true;

    # Copy previous indentation on autoindenting
    copyindent = true;

    # Highlight current line
    cursorline = true;

    # Enable linematch diff algorithm
    diffopt.__raw = ''
      vim.list_extend(vim.opt.diffopt:get(), { "algorithm:histogram", "linematch:60" })
    '';

    # Expand <Tab> to spaces
    expandtab = true;

    # Disable `~` on nonexistent lines
    fillchars = { eob = " "; };

    # Enable fold with all code unfolded
    foldcolumn = "1";
    foldenable = true;
    foldlevel = 99;
    foldlevelstart = 99;

    # Ignore case in search patterns
    ignorecase = true;

    # Show substitution preview in split window
    inccommand = "split";

    # Infer casing on word completion
    infercase = true;

    # Global statusline
    laststatus = 3;

    # Wrap lines at 'breakat'
    linebreak = true;

    # Enable list mode
    list = true;

    # Set custom strings for list mode
    # - tabulations are shown as ‒▶
    # - trailing spaces are shown as ·
    # - multiple non-leading consecutive spaces are shown as bullets (·)
    # - non-breakable spaces are shown as ⎕
    listchars = "tab:‒▶,trail:·,multispace:·,lead: ,nbsp:⎕";

    # Enable mouse support
    mouse = "a";

    # Show line numbers
    number = true;

    # Preserve indentation as much as possible
    preserveindent = true;

    # Height of the popup menu
    pumheight = 10;

    # Display line numbers relative to current line
    relativenumber = true;

    # Minimal number of lines to keep around the cursor
    # This has the effect to move the view along with current line
    #scrolloff = 999;

    # Number of spaces to use for indentation
    shiftwidth = 2;

    # Disable search count wrap and startup messages
    shortmess.__raw = ''
      vim.tbl_deep_extend("force", vim.opt.shortmess:get(), { s = true, I = true })
    '';

    # Disable showing modes in command line
    showmode = false;

    # Always show tabline
    showtabline = 2;

    # Show signs column
    signcolumn = "yes";

    # Override ignorecase if search pattern contains uppercase characters
    smartcase = true;

    # Number of spaces input on <Tab>
    softtabstop = 2;

    # Open horizontal split below (:split)
    splitbelow = true;

    # Open vertical split to the right (:vsplit)
    splitright = true;

    # Number of spaces to represent a <Tab>
    tabstop = 2;

    # Enables 24-bit RGB color
    termguicolors = true;

    # Shorter timeout duration
    timeoutlen = 500;

    # Set window title to the filename
    title = true;

    # Save undo history to undo file (in $XDG_STATE_HOME/nvim/undo)
    undofile = true;

    viewoptions.__raw = ''
      vim.tbl_filter(function(val) return val ~= "curdir" end, vim.opt.viewoptions:get())
    '';

    # Enable virtual edit in visual block mode
    # This has the effect of selecting empty cells beyond lines boundaries
    virtualedit = "block";

    # Disable line wrapping
    wrap = false;

    # Disable making a backup before overwriting a file
    writebackup = false;
  };
}