My DefaultKeyBinding.dict for Mac OS X

DefaultKeyBinding.dict

/* ~/Library/KeyBindings/DefaultKeyBinding.Dict

This file remaps the key bindings of a single user on Mac OS X 10.5 to more
closely match default behavior on Windows systems. This makes the Command key
behave like Windows Control key. To use Control instead of Command, either swap
Control and Command in Apple->System Preferences->Keyboard->Modifier Keys...
or replace @ with ^ in this file.

Here is a rough cheatsheet for syntax.
Key Modifiers
^ : Ctrl
$ : Shift
~ : Option (Alt)
@ : Command (Apple)
# : Numeric Keypad

Non-Printable Key Codes

Standard
Up Arrow:     \UF700        Backspace:    \U0008        F1:           \UF704
Down Arrow:   \UF701        Tab:          \U0009        F2:           \UF705
Left Arrow:   \UF702        Escape:       \U001B        F3:           \UF706
Right Arrow:  \UF703        Enter:        \U000A        ...
Insert:       \UF727        Page Up:      \UF72C
Delete:       \UF728        Page Down:    \UF72D
Home:         \UF729        Print Screen: \UF72E
End:          \UF72B        Scroll Lock:  \UF72F
Break:        \UF732        Pause:        \UF730
SysReq:       \UF731        Menu:         \UF735
Help:         \UF746

OS X
delete:       \U007F

For a good reference see http://osxnotes.net/keybindings.html.

NOTE: typically the Windows 'Insert' key is mapped to what Macs call 'Help'.
Regular Mac keyboards don't even have the Insert key, but provide 'Fn' instead,
which is completely different.
*/

{
    "@\UF72B"  = "moveToEndOfDocument:";                         /* Cmd  + End   */
    "~@\UF703" = "moveToEndOfDocument:";                         /* Cmd + Option + Right Arrow */

    "@$\UF72B" = "moveToEndOfDocumentAndModifySelection:";       /* Shift + Cmd  + End */

    "@\UF729"  = "moveToBeginningOfDocument:";                   /* Cmd  + Home  */
    "~@\UF702" = "moveToBeginningOfDocument:";                   /* Cmd + Option + Left Arrow */

    "@$\UF729" = "moveToBeginningOfDocumentAndModifySelection:"; /* Shift + Cmd  + Home */

    "\UF729"   = "moveToBeginningOfLine:";                       /* Home         */
    "~\UF702"  = "moveToBeginningOfLine:";                       /* Option + Left Arrow */

    "$\UF729"  = "moveToBeginningOfLineAndModifySelection:";     /* Shift + Home */
    "$~\UF702" = "moveToBeginningOfLineAndModifySelection:";     /* Shift + Option + Right Arrow */

    "\UF72B"   = "moveToEndOfLine:";                             /* End          */
    "~\UF703"  = "moveToEndOfLine:";                             /* Option + Right Arrow */

    "$\UF72B"  = "moveToEndOfLineAndModifySelection:";           /* Shift + End  */
    "$~\UF703" = "moveToEndOfLineAndModifySelection:";           /* Shift + Option + Left Arrow  */

    "\UF72C"   = "pageUp:";                                      /* PageUp       */
    "\UF72D"   = "pageDown:";                                    /* PageDown     */
    "$\UF728"  = "cut:";                                         /* Shift + Del  */
    "$\UF727"  = "paste:";                                       /* Shift + Ins */
    "@\UF727"  = "copy:";                                        /* Cmd  + Ins  */
    "$\UF746"  = "paste:";                                       /* Shift + Help */
    "@\UF746"  = "copy:";                                        /* Cmd  + Help (Ins) */

    "~j"       = "moveBackward:";                                /* Option + j */
    "~l"       = "moveForward:";                                 /* Option + l */
    "~i"       = "moveUp:";                                      /* Option + i */
    "~k"       = "moveDown:";                                    /* Option + k */

    "@~i"      = ("moveUp:","moveUp:","moveUp:","moveUp:","moveUp:","moveUp:","moveUp:","moveUp:",);                            /* Cmd + Option + j */
    "@~k"      = ("moveDown:","moveDown:","moveDown:","moveDown:","moveDown:","moveDown:","moveDown:","moveDown:",);                            /* Cmd + Option + j */

    "@\UF702"  = "moveWordBackward:";                            /* Cmd  + LeftArrow */
    "@~j"      = "moveWordBackward:";                            /* Cmd + Option + j */
    "@\U007F"  = "deleteWordBackward:";                          /* Cmd  + Backspace */

    "@\UF703"  = "moveWordForward:";                             /* Cmd  + RightArrow */
    "@~l"      = "moveWordForward:";                             /* Cmd + Option + l */
    "@\UF728"  = "deleteWordForward:";                           /* Cmd  + Delete */

    "@$\UF702" = "moveWordBackwardAndModifySelection:";          /* Shift + Cmd  + Leftarrow */
    "@$\UF703" = "moveWordForwardAndModifySelection:";           /* Shift + Cmd  + Rightarrow */
}

using FileMonitor from objective-see we know that Chrome indeed reads DefaultKeyBinding.dict and actually uses them everywhere from omnibox to <textarea> !!!

see my dump of standardkeybinding.dict and AppKit symbols for bindable methods, maybe you will get some new ideas
https://gist.github.com/hym3242/8e8bc10a2fed8e55973c500f1798c234

here is my binding: explore for more yourself.

{
        "^~h" = "deleteWordBackward:"; //bash style...
        "^~d" = "deleteWordForward:"; //ibid
        "^u" = "deleteToBeginningOfParagraph:"; //unix style kill, ONLY THIS METHOD deleteToBeginningOfParagraph: CAN ADD SELECTION TO YANK BUFFER!(or so it seems...)
        "^w" = "deleteWordBackward:"; //unix style werase
        "~a" = "selectParagraph:"; //cocoa paragraph ≈ unix line
        "^m" = "insertNewline:";  //RETURN as in "Carriage Return"
        "^j" = "insertNewlineIgnoringFieldEditor:"; //default also bound to opt+return, alternate newline, bypasses some editor smart features
        "~v" = "pageUp:"; //you know your emacs.
        "~V" = "pageUpAndModifySelection:";  //shift+option+v
        "~A" = "selectWord:";
        "~c" = "capitalizeWord:";  //uppercaseWord: method does  not seem to work?
        "~t" = "convertToTraditionalChinese:"; //convert selection
        "~s" = "convertToSimplifiedChinese:"; //ibid.
        "^J" = "insertLineBreak:";  //linebreak is different from newline. default also bound to ctrl+return

// add these to your liking
//      "~h" = "deleteWordBackward:";
//      "~d" = "deleteWordForward:";
//      "~b" = "moveWordBackward:";
//      "~f" = "moveWordForward:";
}

"^\UF702" = "moveWordLeft:"; // ctrl-left
"^\UF703" = "moveWordRight:"; // ctrl-right

This doesn't work on BigSur. Anyone know the correct way?

@jlahijani These have changed to moveWordBackward and moveWordForward.

Odd. Those work for me on Monterey without changing "left" or "right" to "backward" / "forward"

🤔

Need to remove the default control-left/right shortcuts in mission control in Settings -> Keyboard -> Keyboard Shortcuts -> Mission Control -> Mission Control
https://superuser.com/a/657851/756769