Supported platforms: 
Available since: Gideros 2016.06
Description
utf8 string library
Methods
utf8.byte Returns the internal numerical codes of the characters
utf8.char Returns a string from integers as characters
utf8.charpos convert UTF-8 position to byte offset
utf8.codepoint Returns the codepoints (as integers) from all characters
utf8.codes Returns values so that the construction
utf8.escape Escape a str to UTF-8 format string
utf8.find Looks for the first match of pattern in the string s
utf8.fold convert UTF-8 string s to folded case used to compare by ignore case
utf8.gmatch Returns an iterator function
utf8.gsub Returns a copy of s in which all (or the first n, if given) occurrences of the pattern have been replaced
utf8.insert Insert a substring to s
utf8.len Returns the number of UTF-8 characters in string
utf8.lower Receives a string and returns a copy of this string with all uppercase letters changed to lowercase
utf8.match Looks for the first match of pattern in the string s
utf8.ncasecmp Compare a and b without case
utf8.next Iterate though the UTF-8 string s
utf8.offset Returns the position (in bytes) where the encoding of the n-th character of s
utf8.remove Delete a substring in s
utf8.reverse Returns a string that is the string s reversed.
utf8.sub Returns the substring of s that starts at i and continues until j
utf8.title Convert UTF-8 string s to title case used to compare by ignore case
utf8.upper Receives a string and returns a copy of this string with all lowercase letters changed to uppercase.
utf8.width calculate the width of UTF-8 string s
utf8.widthindex Return the character index at given location in string s.
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Events
Constants
utf8.charpattern
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