remapLaptopKeyBoard

#!/bin/sh

remote_id=$(
    xinput list |
		sed -n 's/.*AT Translated Set 2 keyboard.*id=\([0-9]*\).*keyboard.*/\1/p'
	
)
[ "$remote_id"  ] || exit

# remap the following keys, only for my custom vintage atari joystick connected
# through an old USB keyboard:
#
# keypad 5 -> keypad 6
# . -> keypad 2
# [ -> keypad 8
# left shift -> left control

mkdir -p /tmp/xkb/symbols
# This is a name for the file, it could be anything you
# want. For us, we'll name it "custom". This is important
# later.
#
# The KP_* come from /usr/include/X11/keysymdef.h
# Also note the name, "remote" is there in the stanza
# definition.
cat >/tmp/xkb/symbols/custom <<\EOF

xkb_symbols "remote" {

# remap 1/exclam key to Katakana with xkb then Disable Katakana Keysym with xmodmap
# make key ONE_LEVEL type to avoid CAPS_LOCK and SHIFT modifiers
	key <AE01> { type= "ONE_LEVEL", [ Katakana ] };

# use KeyPad 1 for 1/exclam
	key <KP1> { [ 1, exclam ] };
#     key <KP5>  { [ KP_Right, KP_6, U2192, U21D2  ]        };
# 	    key <I129> { [ KP_Down, KP_2, U2193, U21D3  ]        };
# 		    key <AD12> { [ KP_Up, KP_8, U2191, U21D1  ]   };
# 			    key <LFSH> { [ Control_L  ]         };
				
};
EOF


# (1) We list our current definition
# (2) Modify it to have a keyboard mapping using the name
#     we used above, in this case it's the "remote" definition
#     described in the file named "custom" which we specify in
#     this world as "custom(remote)".
# (3) Now we take that as input back into our definition of the
#     keyboard. This includes the file we just made, read in last,
#     so as to override any prior definitions.  Importantly we 
#     need to include the directory of the place we placed the file
#     to be considered when reading things in.
#
# Also notice that we aren't including exactly the 
# directory we specified above. In this case, it will be looking
# for a directory structure similar to /usr/share/X11/xkb
# 
# What we provided was a "symbols" file. That's why above we put
# the file into a "symbols" directory, which is not being included
# below.
setxkbmap -device $remote_id -print \
	 | sed 's/\(xkb_symbols.*\)"/\1+custom(remote)"/' \
	  | xkbcomp -I/tmp/xkb -i $remote_id -synch - $DISPLAY 2>/dev/null


# disable Katakana (after applying xkb to prevent overwrite)
xmodmap -e "keysym Katakana = NoSymbol"