A macOS command-line script to set up a split layout of a terminal emulator and a web browser.

,-------------------.                               ,-----------.,-----------.
|-------------------|                               |-----------||-----------|
|                   |                               |           ||           |
| $ x5050 right     |--.         ,-.(  ).-,         |           ||           |
|                   |--|      ,-(          )-.      | $ x5050   ||  Google   |
|                   |  |  +~~(     *MAGIC*    )~~>  | $         ||           |
|                   |  |      `-(          ),-'     |           || [_______] |
`------+------------'  |          `-.( ).-'         |           ||   == ==   |
       |               |                            |           ||           |
       `---------------'                            |           ||           |
                                                    `-----------'`-----------'

make

And put x5050 in a directory in $PATH.

x5050 takes four optional arguments. The order of arguments doesn't matter.

• Position: right (default), left, up, down
• Percent size: 1 ~ 100 (default 50)
• Browser: Tested with Chrome (default) and Safari
• URL to open

x5050
x5050 left
x5050 down 40
x5050 https://github.com/junegunn
x5050 up Safari https://google.com

A few years ago, I wrote vim-xmark, a minimal Markdown preview plugin for Vim. It does two things:

1. Set up a split layout, Vim and a web browser, using AppleScript
2. Convert Markdown document using pandoc and display it in the browser window

The implementation is simple and it still works fine, but lately I've been trying out markdown-preview.nvim which provides better preview functionality (e.g. immediate update, synchronized scroll, etc). So I extracted the split layout code from vim-xmark into x5050 so I can use it with the new plugin.

if has('mac') && executable('x5050')
  function! MKDPSplit(url)
    call system('x5050 '.shellescape(a:url))
  endfunction

  let g:mkdp_browserfunc = 'MKDPSplit'
endif

You can do the same thing pretty easily with Hammerspoon like so:

local screen = hs.window.focusedWindow():screen()
hs.layout.apply({
  { hs.window.focusedWindow(), nil, screen, hs.layout.left50 },
  { "Chrome", nil, screen, hs.layout.right50 }
})

MIT