Update ligature definitions

README.org

@@ -621,12 +621,11 @@ Configure email with iCalendar event support, to integrate with
     :config
     (ligature-set-ligatures
      '(text-mode prog-mode org-mode)
-     '("<--" "<---" "<-" "->" "-->" "--->"
+     '("->" "-->" "--->" "=>" "==>" "===>"
-       "<==" "<===" "<=" "=>" "==>" "===>"
+       "<--" "<---" "<-" "<==" "<==="
        "<->" "<-->" "<--->" "<---->"
        "<=>" "<==>" "<===>" "<====>"
-       "==" "!=" "===" "!==" "!==="
+       "<=" ">=" "==" "!=" "===" "!==" "!==="
-       "<|" "<|>" "|>" "<>" "</" "</>" "/>"
        "/*" "*/" "+++" "<~~" "~~>" "<!---" "---!>"))
     (global-ligature-mode +1))
 
@@ -1536,15 +1535,6 @@ Configure email with iCalendar event support, to integrate with
 * Font Showcase
 This is a showcase of various font features to act as a standard
 candle.
-** Header 2
-*** Header 3
-**** Header 4
-***** Header 5
-****** Header 6
-******* Header 7
-******** Header 8
-********* Header 9
-********** Header 10
 ** Font emphasis
 Examples of:
 - *Bold text*
@@ -1577,20 +1567,6 @@ How about: 0,O,o
 |         9 |        81 | WWWWWWWWWh   |
 |        10 |       100 | WWWWWWWWWWWW |
 #+TBLFM: $2=$1**2::$3='(orgtbl-ascii-draw $2 1 100 12)
-** Coding ligatures
-#+begin_example
--<< -< -<- <-- <--- <<- <- -> ->> --> ---> ->- >- >>-
-
-=<< =< =<= <== <=== <<= <= => =>> ==> ===> =>= >= >>=
-
-<-> <--> <---> <----> <=> <==> <===> <====> :: ::: __
-
-<~~ </ </> /> ~~> == != /= ~= <> === !== !=== =/= =!=
-
-<: := *= *+ <* <*> *> <| <|> |> <. <.> .> +* =* =: :>
-
-(* *) /* */ [| |] {| |} ++ +++ \/ /\ |- -| <!-- <!---
-#+end_example
 ** Source blocks
 #+begin_src python
   def main(*args, **kwargs) -> None: