Sublime : 2 Columns Layout Management

Default (OSX).sublime-keymap

[

    { "keys" : [ "alt+1" ], "command" : "focus_group", "args" : { "group" : 0 } },

    { "keys" : [ "alt+2" ], "command" : "focus_group", "args" : { "group" : 1 } },

    {   // workspace left
        "keys" : [ "ctrl+alt+super+left" ],
        "command" : "run_multiple_commands",
        "args" : {
            "commands" : [
                {
                    "command" : "set_layout",
                    "args" : {
                        "cols" : [ 0.0, 0.80, 1.0 ],
                        "rows" : [ 0.0, 1.0 ],
                        "cells" : [ [ 0, 0, 1, 1 ], [ 1, 0, 2, 1 ] ]
                    },
                    "context" : "window"
                },
                { "command" : "focus_group", "args" : { "group" : 0 }, "context" : "window" }
            ]
        }
    },

    {   // fetch from the right
        "keys" : [ "ctrl+alt+left" ],
        "command" : "run_multiple_commands",
        "args" : {
            "commands" : [
                {   // give visual feedback due to change of focus, if coming from the right
                    "command" : "set_layout",
                    "args" : {
                        "cols" : [ 0.0, 0.80, 1.0 ],
                        "rows" : [ 0.0, 1.0 ],
                        "cells" : [ [ 0, 0, 1, 1 ], [ 1, 0, 2, 1 ] ]
                    },
                    "context" : "window"
                },
                { "command" : "focus_group", "args" : { "group" : 1 }, "context" : "window" },
                { "command" : "move_to_group", "args" : { "group" : 0 }, "context" : "window" },
                { "command" : "focus_group", "args" : { "group" : 0 }, "context" : "window" }
            ]
        }
    },

    {   // put to the right
        "keys" : [ "ctrl+alt+right" ],
        "command" : "run_multiple_commands",
        "args" : {
            "commands" : [
                {   // give visual feedback due to change of focus, if coming from the right
                    "command" : "set_layout",
                    "args" : {
                        "cols" : [ 0.0, 0.80, 1.0 ],
                        "rows" : [ 0.0, 1.0 ],
                        "cells" : [ [ 0, 0, 1, 1 ], [ 1, 0, 2, 1 ] ]
                    },
                    "context" : "window"
                },
                { "command" : "focus_group", "args" : { "group" : 0 }, "context" : "window" },
                { "command" : "move_to_group", "args" : { "group" : 1 }, "context" : "window" },
                { "command" : "focus_group", "args" : { "group" : 0 }, "context" : "window" }
            ]
        }
    },

    {   // workspace right
        "keys" : [ "ctrl+alt+super+right" ],
        "command" : "run_multiple_commands",
        "args" : {
            "commands" : [
                {
                    "command" : "set_layout",
                    "args" : {
                        "cols" : [ 0.0, 0.20, 1.0 ],
                        "rows" : [ 0.0, 1.0 ],
                        "cells" : [ [ 0, 0, 1, 1 ], [ 1, 0, 2, 1 ] ]
                    },
                    "context" : "window"
                },
                { "command" : "focus_group", "args" : { "group" : 1 }, "context" : "window" }
            ]
        }
    },

    {   // fetch from the left
        "keys" : [ "alt+super+right" ],
        "command" : "run_multiple_commands",
        "args" : {
            "commands" : [
                {   // give visual feedback due to change of focus, if coming from the left
                    "command" : "set_layout",
                    "args" : {
                        "cols" : [ 0.0, 0.20, 1.0 ],
                        "rows" : [ 0.0, 1.0 ],
                        "cells" : [ [ 0, 0, 1, 1 ], [ 1, 0, 2, 1 ] ]
                    },
                    "context" : "window"
                },
                { "command" : "focus_group", "args" : { "group" : 0 }, "context" : "window" },
                { "command" : "move_to_group", "args" : { "group" : 1 }, "context" : "window" },
                { "command" : "focus_group", "args" : { "group" : 1 }, "context" : "window" }
            ]
        }
    },

    {   // put to the left
        "keys" : [ "alt+super+left" ],
        "command" : "run_multiple_commands",
        "args" : {
            "commands" : [
                {   // give visual feedback due to change of focus, if coming from the left
                    "command" : "set_layout",
                    "args" : {
                        "cols" : [ 0.0, 0.20, 1.0 ],
                        "rows" : [ 0.0, 1.0 ],
                        "cells" : [ [ 0, 0, 1, 1 ], [ 1, 0, 2, 1 ] ]
                    },
                    "context" : "window"
                },
                { "command" : "focus_group", "args" : { "group" : 1 }, "context" : "window" },
                { "command" : "move_to_group", "args" : { "group" : 0 }, "context" : "window" },
                { "command" : "focus_group", "args" : { "group" : 1 }, "context" : "window" }
            ]
        }
    }

]

run-multiple-commands.py

# run_multiple_commands.py

import sublime, sublime_plugin

# Takes an array of commands (same as those you'd provide to a key binding) with
# an optional context (defaults to view commands) & runs each command in order.
# Valid contexts are 'text', 'window', and 'app' for running a TextCommand,
# WindowCommands, or ApplicationCommand respectively.

class RunMultipleCommandsCommand(sublime_plugin.TextCommand):
  def exec_command(self, command):
    if not 'command' in command:
      raise Exception('No command name provided.')

    args = None
    if 'args' in command:
      args = command['args']

    # default context is the view since it's easiest to get the other contexts
    # from the view
    context = self.view
    if 'context' in command:
      context_name = command['context']
      if context_name == 'window':
        context = context.window()
      elif context_name == 'app':
        context = sublime
      elif context_name == 'text':
        pass
      else:
        raise Exception('Invalid command context "'+context_name+'".')

    # skip args if not needed
    if args is None:
      context.run_command(command['command'])
      # uncomment the next line, if you want to add a delay to the execution
      # sublime.set_timeout( lambda: context.run_command(command['command']), 2000 )
    else:
      context.run_command(command['command'], args)
      # uncomment the next line, if you want to add a delay to the execution
      # sublime.set_timeout( lambda: context.run_command(command['command'], args), 2000 )

  def run(self, edit, commands = None):
    if commands is None:
      return # not an error
    for command in commands:
      self.exec_command(command)

The run_multiple_commands.py has been developed by Nilium - see http://www.sublimetext.com/forum/viewtopic.php?f=5&t=8677 for a discussion.

Works on ST3, thanks for sharing mate!