FM / types

/usr/share/X11/xkb/types

Name	Size	Mode	Actions
basic	596	0644	edit dl rm
cancel	226	0644	edit dl rm
caps	4535	0644	edit dl rm
complete	179	0644	edit dl rm
default	178	0644	edit dl rm
extra	4431	0644	edit dl rm
iso9995	432	0644	edit dl rm
level5	7674	0644	edit dl rm
mousekeys	218	0644	edit dl rm
nokia	303	0644	edit dl rm
numpad	1658	0644	edit dl rm
pc	1107	0644	edit dl rm
README	246	0644	edit dl rm

Edit: /usr/share/X11/xkb/types/numpad (1658B)

default partial xkb_types "pc" {
    type "KEYPAD" {
	modifiers = Shift + NumLock;
	map[None] = Level1;
	map[NumLock] = Level2;
	map[Shift+NumLock] = Level1;
	level_name[Level1] = "Base";
	level_name[Level2] = "Number";
    };
};

// On Mac keypads, levels 1 and 2 are swapped.
partial xkb_types "mac" {
    type "KEYPAD" {
	modifiers = None;
	map[None] = Level2;
	level_name[Level2] = "Number";
    };
};

partial xkb_types "microsoft" {
    type "KEYPAD" {
	modifiers = Shift + NumLock;
	map[None] = Level1;
	preserve[Shift] = Shift;
	map[NumLock] = Level2;
	level_name[Level1] = "Base";
	level_name[Level2] = "Number";
    };
};

// Swiss-German style numeric keypad: Shift and NumLock operate as
// two independent modifiers; however, since we want shift state for
// the cursor keys, only three levels are used from the key mappings.
// Closest type is actually FOUR_LEVEL_X, but most numpad layouts use
// FOUR_LEVEL_MIXED_KEYPAD, so that's the one we are going to override.
partial xkb_types "shift3" {
    type "FOUR_LEVEL_MIXED_KEYPAD" {
	modifiers = Shift + NumLock + Control + Alt;

// NumLock Off => navigate using cursor keys
	map[None] = Level1;

// NumLock Off + Shift pressed => select using cursor keys
	preserve[Shift] = Shift;

// NumLock On => decimal digits
	map[NumLock] = Level2;

// NumLock On + Shift pressed => auxiliary symbols,
	// e.g. hexadecimal digits
	map[Shift+NumLock] = Level3;

// Ctrl + Alt, regardless of NumLock and Shift => command keys
	map[Control+Alt] = Level4;

level_name[Level1] = "Base";
	level_name[Level2] = "NumLock";
	level_name[Level3] = "Shift+NumLock";
	level_name[Level4] = "Ctrl+Alt";
    };
};

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