Utf8.fold

Converts a UTF-8 string to folded case used to compare by ignore case. If input is an integer, it's treat as a code point and a convert code point (number) is returned.

Syntax

string utf8.fold ( string|int input )

Required Arguments

• input: A string character sequence OR an integer value

Returns

Returns a string in folded case.

Example

Click to collapse [-]

Server

This example shows how to convert a string to folded case, which can be used to compare with other folded strings.

local output = utf8.fold( "WHAT ARE YOU UP TO? Do you like uppercase?" )
print( output ) -- what are you up to? do you like uppercase?

local value = utf8.fold( 1088 )
print( type( value ) ) -- number

See Also

• utf8.byte
• utf8.char
• utf8.charpos
• utf8.escape
• utf8.find
• utf8.fold
• utf8.gmatch
• utf8.gsub
• utf8.insert
• utf8.len
• utf8.lower
• utf8.match
• utf8.ncasecmp
• utf8.next
• utf8.remove
• utf8.reverse
• utf8.sub
• utf8.title
• utf8.upper
• utf8.width
• utf8.widthindex