DefaultKeyBinding.dict

/*
When using an external, non-Mac keyboard, the modified keybindings below make
the Home/End keys always jump to the beginning/end of a LINE rather than the
DOCUMENT.

This file should be placed in ~/Library/KeyBindings/DefaultKeyBinding.dict, and
programs need to be restarted to pick up the new behavior.

REFERENCES:
- https://gist.github.com/trusktr/1e5e516df4e8032cbc3d
- https://www.reddit.com/r/MacOS/comments/pz9vnu/comment/iqn3acw/

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

*/


{

"\UF729" = "moveToBeginningOfLine:";
"\UF72B" = "moveToEndOfLine:";
"$\UF729" = moveToBeginningOfLineAndModifySelection:; // shift-home
"$\UF72B" = moveToEndOfLineAndModifySelection:; // shift-end
"^\UF729" = moveToBeginningOfDocument:; // ctrl-home
"^\UF72B" = moveToEndOfDocument:; // ctrl-end
"^$\UF729" = moveToBeginningOfDocumentAndModifySelection:; // ctrl-shift-home
"^$\UF72B" = moveToEndOfDocumentAndModifySelection:; // ctrl-shift-end

}