.xsessionrc

#!/bin/bash

##Method with xkb (not working...yet)

## Requires two files:
## .config/xkb/keycodes/my-keycodes:

#xkb_keycodes "xcape-special" {
#    <LWIN> =  65;
#    <SPCE> = 133;
#};

## And .config/xkb/symbols/my-symbols

#xkb_symbols "xcape-special" {
#    key <LWIN>  { [ Super_L ] };
#    modifier_map Control { <LWIN> };
#};

## Leave here
#XKB_DIR="$HOME/.config/xkb"
#XKB_SYMBOL_FILE="my-symbols"
#XKB_KEYCODE_FILE="my-keycodes"

#setxkbmap -layout "us+$XKB_SYMBOL_FILE(xcape-special)" \
#	    -keycodes "evdev+$XKB_KEYCODE_FILE(xcape-special)" \
#	        -option "" -print \
#		    | xkbcomp -I"$XKB_DIR" - "${DISPLAY%%.*}" >/dev/null 2>&1

#xcape -e "Super_L=space"

## Method with xmodmap (works)
## This file depends on settings in .xmodmaprc
#xmodmap ~/.xmodmaprc ## Could be run here or in the DE session manager

## Use spacebar as a modifier (in .i3/config set mod3)
#spare_modifier="Hyper_L"
#xmodmap -e "keycode 65=$spare_modifier"
#xmodmap -e "add Hyper_L=$spare_modifier"
#xmodmap -e "keycode any=space"
#xcape -e "$spare_modifier=space"

## Use Spacebar as a Modifier (ALTERNATIVE  CONFIGURATION)
## No need for separate .xmodmaprc file
xmodmap -e "keycode 65=Super_L"
xmodmap -e "keycode any=space"
xcape -e "Super_L=space"