How to disable Command + Control + Arrow Key shortcut in Mavericks

Solution 1:

As an alternative solution for Sublime Text (if you want to keep the new OS key mappings) you can add the following lines to your user key bindings file (in menu Subline Text 2 > Preferences > Key Bindings - User):

{ "keys": ["super+shift+up"], "command": "swap_line_up" },
{ "keys": ["super+shift+down"], "command": "swap_line_down" }

This will map ⌘+Shift+↑ or ↓ to the Swap Line Up/Down commands.

A similar issue exists with the batch selection commands usually mapped to Ctrl+Shift+↑ or ↓.

These can be remapped using the following settings:

{ "keys": ["ctrl+alt+shift+up"], "command": "select_lines", "args": {"forward": false} },
{ "keys": ["ctrl+alt+shift+down"], "command": "select_lines", "args": {"forward": true} } 

This will map Ctrl+Alt+Shift+↑ or ↓ to the batch selection commands.

Obviously you can change the combinations to whatever you prefer, but these did not seem to be used for anything.

Solution 2:

Cmd+Ctrl with ↑ or ↑ is not actually mapped by Mac OS X, which is where the confusion is coming from.

It is likely a window manager like SizeUp that is overriding those shortcuts. You can disable the shortcut in the application's preferences.