Case of a letter. Orderings:

• lowerUpper
• upperLower
• Order.tie

'a' < 'A'

Tag for lowerUpper

'A' < 'a'

Ordering according to the unicode char code.

This behavior matches elm's Basics.compare.

Tag for unicode

Order Chars

• Both are letters → Order ascii-alphabetically (a < ... < z)
  • They're the same letter? → a given Ordering on their cases
• Both aren't letters → Order according to unicode char code
• Only one is a letter → the letter is considered greater

Order.with (Char.Order.aToZ Char.Order.upperLower) 'b' 'D'
--> LT

Order.with (Char.Order.aToZ Char.Order.upperLower) 'l' 'L'
--> GT

Order.with (Char.Order.aToZ Char.Order.upperLower) 'i' '!'
--> GT

Order.with (Char.Order.aToZ Char.Order.upperLower) '-' '!'
--> Order.with Char.Order.unicode '-' '!'

Tag for aToZ

Wrapper tag for AToZ