config.karabiner.edn

{:main[
       {:des "caps_lock to left_control when held",
       :rules [[:##caps_lock :left_control nil {:alone :caps_lock}]]
        }
       {:des "tab to left_option when held",
       :rules [[:##tab :left_option nil {:alone :tab}]]
       }
      {:des "hold q for utils mode"
       :rules [
               [:q ["utils-mode" 1] nil {:afterup ["utils-mode" 0] :alone :q}]
               [:h :left_arrow ["utils-mode" 1]]
               [:j :down_arrow ["utils-mode" 1]]
               [:k :up_arrow ["utils-mode" 1]]
               [:l :right_arrow ["utils-mode" 1]]
               [:m :return_or_enter ["utils-mode" 1]]
               [:i :home ["utils-mode" 1]]
               [:o :end ["utils-mode" 1]]
               [:semicolon :!Oquote ["utils-mode" 1]]
               [:quote :!Oo ["utils-mode" 1]]
               [:open_bracket :!Oa ["utils-mode" 1]]
               [:slash :!Qslash ["utils-mode" 1]]
               [:comma :delete_or_backspace ["utils-mode" 1]]
               [:period :delete_forward ["utils-mode" 1]]

               ]
       }

      {:des "hold !Sz for number-mode"
       :rules [
               [:!Sz ["number-mode" 1] nil {:afterup ["number-mode" 0] :alone :!Sz}]
               [:!So :9 ["number-mode" 1]]
               [:!Si :8 ["number-mode" 1]]
               [:!Su :7 ["number-mode" 1]]
               [:!Sl :6 ["number-mode" 1]]
               [:!Sk :5 ["number-mode" 1]]
               [:!Sj :4 ["number-mode" 1]]
               [:!Speriod :3 ["number-mode" 1]]
               [:!Scomma :2 ["number-mode" 1]]
               [:!Sm :1 ["number-mode" 1]]
               [:!Sslash :0 ["number-mode" 1]]
               [:!Sx :comma ["number-mode" 1]]
               [:!Sc :period ["number-mode" 1]]
               ]
       }

      {:des "hold z for symbols-mode"
       :rules [
               [:z ["symbols-mode" 1] nil {:afterup ["symbols-mode" 0] :alone :z}]
               [:i :open_bracket ["symbols-mode" 1]]
               [:o :close_bracket ["symbols-mode" 1]]
               [:k :!S9 ["symbols-mode" 1]]
               [:l :!S0 ["symbols-mode" 1]]
               [:comma :!Sopen_bracket ["symbols-mode" 1]]
               [:period :!Sclose_bracket ["symbols-mode" 1]]
               [:j :equal_sign ["symbols-mode" 1]]
               [:m :!Shyphen ["symbols-mode" 1]]
               [:slash :0 ["symbols-mode" 1]]
               [:x :comma ["symbols-mode" 1]]
               [:c :period ["symbols-mode" 1]]
               ]
       }
]}


    ;; !  | means mandatory -   modifier(s) alone when pressend change behavior
    ;; #  | means optional  -   modifiers are optional (but atleast one necessary)

    ;; :!Ca is keycode :a and prefix a with !C

    ;; C  | left_command
    ;; T  | left_control
    ;; O  | left_option
    ;; S  | left_shift
    ;; F  | fn
    ;; Q  | right_command
    ;; W  | right_control
    ;; E  | right_option
    ;; R  | right_shift

    ;; ## | optional any (this has no effect when used on the RHS; only LHS)
    ;; !! | command + control + optional + shift (hyper)