xmodmap_v4.1

! ### Development/debug tips

!  `xev` and `showkey` to see which keycode is pressed

!  find information of old keys
!   `xmodmap -pke |grep Something`

! Fastest way to get Unicode number out of Unicode chars
! - in Python repl:
!    >>> myChars=u'≈°⋆³≡≠'
!    >>> myChars
!    u'\u2248\xb0\u22c6\xb3\u2261\u2260'
! - copy the escaped string inside the quotes the above, replace all \x?? with \u00?? then convert to uppercase using Bash
!    echo '\u2248\xb0\u22c6\xb3\u2261\u2260' | sed s/\x/\u00/g | tr '[:lower:]' '[:upper:]'
! - the result is ready to copy with one click
!    \U2248\U00B0\U22C6\U00B3\U2261\U2260


! ### Configuration

!Double Shift makes Caps_Lock
keycode  50 = Shift_L Caps_Lock Shift_L Caps_Lock
keycode  62 = Shift_R Caps_Lock Shift_R Caps_Lock

! former Tab
!  BackSpace and ∅
keycode  23 = BackSpace NoSymbol U2205

! former BackSpace
!  Delete and S̶t̶r̶i̶k̶e̶t̶h̶r̶o̶u̶g̶h̶
keycode  22 = Delete NoSymbol U0336

! former Control_L
keycode  37 = Super_L

! former Super_L
keycode 133 = Alt_L

! former Alt_L
keycode  64 = Control_L

! former Alt_R
keycode 108 = Control_R

! former Ctrl_R
keycode 105 = Return

! former Super_R
keycode 134 = Alt_R

! former Menu
keycode 135 = Menu

!! CapsLock is now Mode_switch
!! Enter is Mode_switch, too
!! Double Mode_switch (former CapsLock+former Enter) = Enter
keycode 66 = Mode_switch NoSymbol Return
keycode 36 = Mode_switch NoSymbol Return

! Before assignment the modifier keys need to be empty
clear lock
clear control
clear mod1
clear mod4
clear mod5
add Control = Control_L Control_R
add mod1 = Alt_L Alt_R
add mod4 = Super_L Super_R
add mod5 = Mode_switch ISO_Level3_Shift

! Shift + space = middle dot ·
! Mode_switch + space = Tab
keycode 65 = space U00B7 Tab ISO_Left_Tab

! Mode_switch + Qwerty's I/K/J/L (Dvorak's C/T/H/N) => Up/Left/Down/Right
keycode  31 = c C Up
keycode  45 = t T Down
keycode  44 = h H Left
keycode  46 = n N Right

! Mode_switch + Qwerty's Y/H (Dvorak's F/D) => PageUp/PageDown (aka Prior/Next)
keycode  29 = f F Prior
keycode  43 = d D Next

! Mode_switch + Qwerty's U/O (Dvorak's G/R) => Home/End
keycode  30 = g G Home
keycode  32 = r R End

! ### Unicode symbols ###
! k and ©
keycode  55 = k K U00A9

! w and ❤
keycode  59 = w W U2764

! - and ¬
keycode  48 = minus underscore notsign

! % and °
keycode  10 = ampersand percent degree

! 2 and ²
keycode  17 = parenright 2 U00B2
! 3 and ³
keycode  13 = braceright 3 U00B3

! # and ov̅e̅r̅l̅i̅n̅e̅
keycode  21 = numbersign grave U0305

! m and µ
keycode  58 = m M U00B5

! x and ×
keycode  56 = x X U00D7
! : and ÷
keycode  24 = semicolon colon U00F7

! v and ₫
keycode  60 = v V DongSign
! e and €
keycode  40 = e E EuroSign

! < and ←
keycode  25 = comma less U2190
! > and →
keycode  26 = period greater U2192
! ^ and ↑
keycode  35 = at asciicircum U2191
! | and ↓
keycode  51 = backslash bar U2193
! " and ↔
keycode  52 = apostrophe quotedbl U2194

! b and ∈
keycode  57 = b B U2208

! + and ∑
keycode  18 = plus 4 U2211
! * and ∏
keycode  16 = asterisk 0 U220F

! / and √
keycode  34 = slash question U221A

! i and ∩
keycode  42 = i I U2229
! u and ∪
keycode  41 = u U U222A

! s and ∫
keycode  47 = s S U222B

! ~ and ≈
keycode  49 = dollar asciitilde U2248
! = and ≠
keycode  15 = equal 9 U2260
! 1 and ≡
keycode  14 = parenleft 1 U2261

! P and ⊃
keycode  27 = p P U2283
! Y and ⊂
keycode  28 = y Y U2282

! 5 and ⋆
keycode  12 = braceleft 5 U22C6

! [ and ☐
keycode  11 = bracketleft 7 U2610
! ] and ☑
keycode  19 = bracketright 6 U2611

! q and ☠
keycode  53 = q Q U2620

! j and ♪
keycode  54 = j J U266a

! 8 and ∞
keycode  20 = exclam 8 U221e

! A and Δ
keycode  38 = a A U0394

! O and Ω
keycode  39 = o O U03A9

! l and λ
keycode  33 = l L U03BB

! z and U̲n̲d̲e̲r̲l̲i̲n̲e̲
keycode  61 = z Z U0332

Result

(blue keys←Shift, orange & red ones←Modeswitch, non characters are red)

Usage:

• Produce xkb layout from the above (only needed doing once)
  • setxkbmap us -variant dvp
  • xmodmap the-xmodmap-file-above
  • xkbcomp -xkb $DISPLAY xkbmap → will produce a file named xkbmap
• add to your startup script this command:
  • xkbcomp -w 0 xkbmap $DISPLAY → load the xkbmap file above

@myguidingstar: Is it possible to re-map something like mode_switch + g → super + g?

Ping @myguidingstar