Rocky rockyzhang24

🔰 A beginners guide to create custom cmdline

Ever wanted to know how noice creates the cmdline or wanted your own one?

No one? Guess it's just me 🥲.

Anyway, this post is a simple tutorial for creating a basic cmdline in neovim.

How to use clangd C/C++ LSP in any project

tl;dr: If you want to just know the method, skip to How to section

Clangd is a state-of-the-art C/C++ LSP that can be used in every popular text editors like Neovim, Emacs or VS Code. Even CLion uses clangd under the hood. Unfortunately, clangd requires compile_commands.json to work, and the easiest way to painlessly generate it is to use CMake.

For simple projects you can try to use Bear - it will capture compile commands and generate compile_commands.json. Although I could never make it work in big projects with custom or complicated build systems.

But what if I tell you you can quickly hack your way around that, and generate compile_commands.json for any project, no matter how compilcated? I have used that way at work for years, originaly because I used CLion which supported only CMake projects - but now I use that method succesfully with clangd and Neovim.

Semantic Highlighting in Neovim

What is Semantic Highlighting?
Default Highlighting
Using LspTokenUpdate for Complex Highlighting
- Highlighting Based on More Than One Modifier
Dealing with Ambiguity

Random numbers in bash et al

There is a variable $RANDOM than you can read in bash or zsh to get a random number beteen 0 and 32767. Here in zsh on my (old) mac:

% echo $RANDOM
13757
% echo $RANDOM
16896

	---Utility for keymap creation.
	---@param lhs string
	---@param rhs string\|function
	---@param opts string\|table
	---@param mode? string\|string[]
	local function keymap(lhs, rhs, opts, mode)
	opts = type(opts) == 'string' and { desc = opts }
	or vim.tbl_extend('error', opts --[[@as table]], { buffer = bufnr })
	mode = mode or 'n'
	vim.keymap.set(mode, lhs, rhs, opts)

	use AppleScript version "2.4" -- Yosemite (10.10) or later
	use scripting additions

	(*
	Original script: John Gruber (https://daringfireball.net/linked/2023/12/05/an-applescript-for-safari-split-tabs-to-new-window)
	Much more elegant version: Leon Cowle (https://github.com/leoncowle)
	Even more elegant version: https://stackoverflow.com/questions/54066100/applescript-to-split-safari-tabs-into-new-window/54089865#54089865

	Worth a warning: "moving" tabs with this script doesn't actually move them like
	drag-and-drop does. The tabs "moved" by this script will reload in the new window,

	return function(INPUT_LINE_NUMBER, CURSOR_LINE, CURSOR_COLUMN)
	print('kitty sent:', INPUT_LINE_NUMBER, CURSOR_LINE, CURSOR_COLUMN)
	vim.opt.encoding='utf-8'
	vim.opt.clipboard = 'unnamed'
	vim.opt.compatible = false
	vim.opt.number = false
	vim.opt.relativenumber = false
	vim.opt.termguicolors = true
	vim.opt.showmode = false
	vim.opt.ruler = false

	local insert_same_with_and_append = function(args, _, _, user_arg1)
	return sn(nil, {
	i(1, args[1][1] .. user_arg1),
	})
	end

	local arf

	local assert = s(
	{

	-- Same with text node, used for function nodes
	local function text_same_with(args)
	return args[1]
	end

	-- Same with text node, used for dynamic nodes
	local function insert_same_with(args)
	return sn(nil, {
	i(1, args[1]),
	})