My favourite VIM/Neovim colorschemes

• Nightfox (dark & light)
• PaperColor (light & dark)
• gruvbox (dark & light)
• toast (light & dark)
• onedark (dark)

See also

• https://vimcolorschemes.com/top

Customize AstroNvim

Enable user customisation

cp -r ~/.config/nvim/lua/user_example ~/.config/nvim/lua/user

Install new plugins

nvim ~/.config/nvim/lua/user/init.lua

  plugins = {
    init = { 
      -- You can also add new plugins here as well:
      -- Add plugins, the packer syntax without the "use"
      { "bryant-the-coder/astron.nvim" }, -- astron colorscheme
    },
  },

:PackerSync

Change colorscheme

nvim ~/.config/nvim/lua/user/init.lua

 -- Set colorscheme to use
 -- colorscheme = "default_theme",
 colorscheme = "astron",

Disable relativenumber option

nvim ~/.config/nvim/lua/user/init.lua

relativenumber = false,

See also

• Add custome plugin to AstroNvim

Setup Neovim for Rust Development

1. Install Neovim
2. Install AstroNvim
   • After installed AstroNvim, you can customise it
3. Install rust LSP
   In Neovim, execute command:

   :LspInstall rust

4. Install rust language parser (tree-sitter)
   In Neovim, execute command:

   :TSInstall rust

5. Install lua language parser (tree-sitter)
   In Neovim, execute command:

   :TSInstall lua

   This is useful for editting the Neovim config (lua) files (*.lua)

See also

• [Video] How I configure Neovim on my Mac to make it amazing
• Get started with AstroNvim
• Using Neovim for Rust Development
• Rust and Neovim - A Thorough Guide and Walkthrough
• NvChad Install

Neovim configuration on Windows

• Create a new folder: C:\Users\USER_NAME\AppData\Local\nvim

  mkdir %UserProfile%\AppData\Local\nvim

• Create new file: C:\Users\USER_NAME\AppData\Local\nvim\init.vim and add configuration:

  set smartindent
  set tabstop=4
  set shiftwidth=4
  set expandtab

• Create new file: C:\Users\USER_NAME\AppData\Local\nvim\init.vim and add configuration:

  " enable Windows shortcuts Ctrl-C Ctrl-V etc.
  source $VIMRUNTIME/mswin.vim
  behave mswin
  
  " enable mouse selection
  set mouse=a
  
  " Gui
  GuiTabline 0
  GuiPopupmenu 0
  GuiLinespace 5
  GuiFont Consolas:h13
  set termguicolors
  
  filetype on
  syntax enable
  set encoding=utf-8
  set background=light

• Add "Open with Neovim" to context menu of File Explorer
• Create a open-with-neovim.reg file:

  Windows Registry Editor Version 5.00
  
  [HKEY_CURRENT_USER\SOFTWARE\Classes\*\shell\Open with Neovim]
  
  [HKEY_CURRENT_USER\SOFTWARE\Classes\*\shell\Open with Neovim\command]
  @="C:\\Utils\\Neovim\\bin\\nvim-qt.exe \"%1\""

• Click the reg file to add to Registry

See also

• Neovim

gVim on Windows 10: enabled copy and paste with Ctrl-C and Ctrl-V

• Add the following lines to _vimrc

• " make Ctrl-C Ctrl-V work
  source $VIMRUNTIME/mswin.vim
  
  " update Edit -> Paste menu item
  unmenu! Edit.Paste
  aunmenu Edit.Paste
  nnoremenu 20.360 &Edit.&Paste<Tab>Ctrl-V        "+gP
  cnoremenu    &Edit.&Paste<Tab>Ctrl-V        <C-R>

see also

• How to make cut/copy/paste in GVim on Ubuntu work with Ctrl+X,Ctrl+C,Ctrl+V?

Windows 10: make backspace work in gVim

• Insert the following line to the start of the _vimrc file

• set backspace=indent,eol,start

see also

• Why doesn't the backspace key work in insert mode?

Windows 10: Adjust gVim scaling on high DPI 4K screen

Fix: icons too small

• Right click the gVim 8.2 shortcut icon to open the context menu
• Select Properties
• Activate Compatibility tab
• Click Change high DPI settings button
• In the new pop up window, check Override high DPI scaling behavior.
• In the Scaling performed by: drop down list, select System (enhanced)

Fix: font too small

• Edit _gvimrc in user's home directory (%USERPROFILE%)

• set guifont=Consolas:h12

vim: format/indent xml file

• It requires xmllint command. libxml2-utils need to be installed:

  sudo apt install libxml2-utils

• Use vim open the xml file, use the following vim command to reformat:

  :%!xmllint --format -

VIM: commands

Mode switching

• i - enter insert mode
• : - enter command mode
• R - enter replace mode
• v - enter visual selection mode
• SHIFT-v - enter visual line selection mode
• CTRL-v - enter visual column selection mode
• ESC - return to normal mode from insert or replace mode
• ESC+ESC - return to normal mode from command or visual mode

VIM: tidy up HTML

First enable filetype indent then set filetype to html, then enable smartident:

:filetype indent on
:set filetype=html
:set smartindent

Then re-format the file using the following commands:

1G      # go to the beginning of file
gg=G    # reformat the file from the beginning

VIM: show column number

• Option 1:

  set laststatus=2
  set statusline+=%F\ row\:%l\ col\:%c

• Option 2:

  set ruler

vim: set line height/space

echo "set linespace=5" >> ~/.vimrc

MacVim: set font size

 echo "set guifont=Menlo Regular:h14" >> ~/.vimrc

or

• CMD+= to zoom in
• CMD+- to zoom out

MacVim for Mac OS X Mavericks

https://github.com/b4winckler/macvim/releases/

vim: indent with 4 spaces

vi ~/.vimrc

set smartindent
set tabstop=4
set shiftwidth=4
set expandtab

vim: remove all java block comments

1. Remove all /* ... */:

   :%s/\/\*\_.\{-}\*\///

2. Remove all /** ... */:

   :%s/\/\*\*\_.\{-}\*\///

VIM: Fix indentations

In normal mode, gg=G where gg goes back to the first line and =G re-indents.

MacVIM: set default font in .gvimrc

edit ~/.gvimrc:

set guifont=Monaco:h15

Note: there is NO spaces around the equal sign.

set guifont=Courier\ New:h15

Note: slashes are required if the font name contains spaces.

VI (VIM): show or hide special characters

• To show special characters e.g. tabs or line-breaks:

  :set list

  or set it in .vimrc

  set list

• To hide special characters e.g. tabs or line-breaks:

  :set nolist

  or set it in .vimrc

  set nolist