xorg

xkb

• arch wiki - xmodmap
• outdated, use xkb instead
• still useful for viewing what modifiers are set to, run with xmodmap

pacman -S xorg-xmodmap

• xev, keyboard event viewer, also useful tool, run with xev

pacman -S xorg-xev

• arch wiki - X keyboard extension
• install, comes as dependency of xorg-server, probably already have it

pacman -S xorg-xkbcomp

• complicated as hell, can't say too much about this
• if you screw up, can make keyboard unusable, first store default config

xkbcomp $DISPLAY output.xkb

• can reset with

setxkbmap -layout us

• once you make custom keymap at ~/.Xkeymap, put in ~/.xprofile at startup:

test -f ~/.Xkeymap && xkbcomp ~/.Xkeymap $DISPLAY

Super_R as mod3

• use case: qmk "hyper" (not in the linux modifier sense) is ctrl_L + shift_L + alt_L + super_L
• use this as i3 mod, need secondary modifier that can't be ctrl/shift/alt/super
• use super_R as unused mod3 to distinguish
• comment out (not necessary, no clue what this does)

    interpret Super_R+AnyOf(all) {
        virtualModifier= Super;
        action= SetMods(modifiers=modMapMods,clearLocks);
    };

• change Super to Mod3 here

    interpret Super_R+AnyOfOrNone(all) {
        action= SetMods(modifiers=Super,clearLocks);
    };

• change Mod4 to Mod3 here

    modifier_map Mod4 { <RWIN> };

• n.b.: I no longer use this, it's simpler to make hyper shift_L + alt_L + super_L (still unlikely to conflict with other keybindings) and use ctrl as a secondary modifier