Useful vim Commands

Search and Replace

  • :s/search/replace/ for current line and first occurrence.
  • :s/search/replace/g for current line and all occurrence.
  • :%s/search/replace/g for all occurance.
  • :3,10s/search/replace/g for a range of line 3 to 10
  • :.,+4s/search/replace/g from current line to next 4 lines
  • :.,$s/search/replace/ from current line to end of the file.
  • end gc to confirm each substitution.
  • end gi to ignore case sensitivity.

Comment multiple lines

Fold lines

:set foldmethod=indent folds all the lines by indentation

Neo Vim for C++

  • Install Mason.nvim
    • Add M.plugins = "custom.plugins" to chadrc.lua under ~/.config/nvim/lua/custom
    • Create a new file here using a key in file tree plugins.lua, edit the following 
      local plugins = {
{
  "williamboman/mason.nvim",
  opts = {
    ensure_installed = {
      "clangd"
    }
  }
}
}
return plugins
    • Close and reopen nvim and run `MasonInstallAll
    • Now add custom lspconfig to mason and final result would look like ```bash local plugins = { { “neovim/nvim-lspconfig”, config = function () require “plugins.configs.lspconfig” require “custom.configs.lspconfig” end }, { “williamboman/mason.nvim”, opts = { ensure_installed = { “clangd” } } } } return plugins
    
- create the lspconfig.lua inside custom/configs
- The files looks as given below
  ```bash
  local base = require("plugins.configs.lspconfig")
  local on_attach = base.on_attach
  local capabilities = base.capabilities
    
  local lspconfig = require("lspconfig")
    
  lspconfig.clangd.setup{
    on_attach = function (client,bufnr)
      client.server_capabilities.signatureHelpProvider=false
      on_attach(client,bufnr)
    end,
    capabilities=capabilities,
  }
    • exit and enter and do TSInstall cpp

    Final result

    • custom/configs/null-ls.lua ```bash local null_ls = require(“null_ls”)

    local opts = { sources = { null_ls.builtins.formatting.clang_format, } }

    return opts ```