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I would like to use Cmd+/ instead of Alt+/ to move the cursor word by word in Mac OSX (A Cocoa thing I guess).

Is it possible to change that?

And by the same token, I would like to move the cursor to the beginning and end of the line by using Alt+/ instead of Cmd+/.

Can it be done?

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up vote 6 down vote accepted

One option would be to create ~/Library/KeyBindings/ and save this as DefaultKeyBinding.dict:

    "@\UF702" = moveWordBackward:;
    "@\UF703" = moveWordForward:;
    "~\UF702" = moveToBeginningOfLine:;
    "~\UF703" = moveToEndOfLine:;
    "~$\UF702" = moveToBeginningOfLineAndModifySelection:;
    "~$\UF703" = moveToEndOfLineAndModifySelection:;

You can't change ⇧⌘← or ⇧⌘→ though. And it doesn't work in some text views or Xcode or Firefox.

Using KeyRemap4MacBook, you could add this to private.xml:

<autogen>--KeyToKey-- KeyCode::CURSOR_LEFT, VK_OPTION | ModifierFlag::NONE, KeyCode::CURSOR_LEFT, VK_COMMAND</autogen>
<autogen>--KeyToKey-- KeyCode::CURSOR_RIGHT, VK_OPTION | ModifierFlag::NONE, KeyCode::CURSOR_RIGHT, VK_COMMAND</autogen>
<autogen>--KeyToKey-- KeyCode::CURSOR_LEFT, VK_SHIFT | VK_OPTION | ModifierFlag::NONE, KeyCode::CURSOR_LEFT, VK_SHIFT | VK_COMMAND</autogen>
<autogen>--KeyToKey-- KeyCode::CURSOR_RIGHT, VK_SHIFT | VK_OPTION | ModifierFlag::NONE, KeyCode::CURSOR_RIGHT, VK_SHIFT | VK_COMMAND</autogen>
<autogen>--KeyToKey-- KeyCode::CURSOR_LEFT, VK_COMMAND | ModifierFlag::NONE, KeyCode::CURSOR_LEFT, VK_OPTION</autogen>
<autogen>--KeyToKey-- KeyCode::CURSOR_RIGHT, VK_COMMAND | ModifierFlag::NONE, KeyCode::CURSOR_RIGHT, VK_OPTION</autogen>
<autogen>--KeyToKey-- KeyCode::CURSOR_LEFT, VK_COMMAND | VK_SHIFT | ModifierFlag::NONE, KeyCode::CURSOR_LEFT, VK_OPTION | VK_SHIFT</autogen>
<autogen>--KeyToKey-- KeyCode::CURSOR_RIGHT, VK_COMMAND | VK_SHIFT | ModifierFlag::NONE, KeyCode::CURSOR_RIGHT, VK_OPTION | VK_SHIFT</autogen>

It would make going back with ⌘← and changing tabs with ⇧⌘← stop working though.

See the source for the key code constants and predefined settings.

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The first option is best because it doesn't overwrite the other keybindings. Also this page is a great reference for customizing your DefaultKeyBinding.dict – aaaaaa Feb 17 at 16:36

Yes. Using Keyboard Maestro, I just created two new macros.

The first has a "hot key trigger" of < command >< left arrow > and does a "type a keystroke" of < option >< left arrow >

The second is the reverse, a "hot key trigger" of < option >< left arrow > and does a "type a keystroke" of < command >< left arrow >. And it does work.

You could then add 2 more macros for the right direction.

The way I wrote them as a quick test they are system wide but they can be limited to specific sets of applications.

While Keyboard Maestro is not free, it does have time limited demo.

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Thanks for the suggestion. I would prefer a free method. I bet there's some way to dig in the settings/files of the system somehow... – trusktr Feb 18 '13 at 2:02

I've used KeyBindingsEditor (free) to edit the DefaultKeyBindings.dict and it works great (even in Firefox and XCode).

cursor settings with KeyBindingsEditor

Leaving the thumb button on the ⌘ key while cruising the text cursor works so much better -- it should be the default!

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Nice tool! Thanks! – trusktr Sep 6 '14 at 16:19
I haven't tried this in Yosemite. Do you know if still works? – trusktr Nov 9 '14 at 3:33
It does!! :) :) :) – trusktr Nov 9 '14 at 3:43

I would recommend karabiner to you. It's a powerful system plugin to remap keys and key combinations. You can map whatever key combos you want to whatever in your mind. Please check it out and you will fall in love with it

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How exactly would Karabiner need to be configured to accomplish the task described in the question? – patrix Apr 19 at 18:36
I like Karabiner. I guess I'd have to look at the source code to find out how it works. – trusktr Apr 20 at 0:33

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