if (ctypel && ctype has .) {
ctype = ctype.substring(ctype.indexOf('.') + 1);
return (ctype has @)? ctype.substring(0, ctype.indexOf('@')): ctype;
}
return not found;
How gcc handles environment variables:
LANG
LC_CTYPE
LC_MESSAGES
LC_ALL
These environment variables control the way that GCC uses localization information which allows GCC to work with
different national conventions. GCC inspects the locale categories LC_CTYPE and LC_MESSAGES if it has been
configured to do so. These locale categories can be set to any value supported by your installation. A typical
value is en_GB.UTF-8 for English in the United Kingdom encoded in UTF-8.
The LC_CTYPE environment variable specifies character classification. GCC uses it to determine the character
boundaries in a string; this is needed for some multibyte encodings that contain quote and escape characters that
are otherwise interpreted as a string end or escape.
The LC_MESSAGES environment variable specifies the language to use in diagnostic messages.
If the LC_ALL environment variable is set, it overrides the value of LC_CTYPE and LC_MESSAGES; otherwise, LC_CTYPE
and LC_MESSAGES default to the value of the LANG environment variable. If none of these variables are set, GCC
defaults to traditional C English behavior.
The format of
LC_CTYPE
is[language[_territory][.codeset][@modifier]]
and code to parse it should be
How gcc handles environment variables: