DefaultLanguage returns the language found in environment variables LC_ALL, LC_CTYPE or LANG (in that order), or the zero value if not found.

LookupScript looks up the script for a particular character (as defined by Unicode Standard Annex #24), and returns Unknown if not found.

NewLanguage canonicalizes the language input (as a BCP 47 language tag), by converting it to lowercase, mapping '_' to '-', and stripping all characters other than letters, numbers and '-'.

ParseScript simply converts a 4 bytes string into its binary encoding.

the two languages have the same primary language, but differs.

the two languages are totally differents.

the two languages are exactly the same.

Language store the canonicalized BCP 47 tag, which has the generic form <lang>-<country>-<other tags>...

LanguageComparison is a three state enum resulting from comparing two languages.

Script identifies different writing systems.