locale "En_US"--and in Cshish shells (B<csh>, B<tcsh>)
setenv LC_ALL en_US.ISO8859-1
-
+
If you do not know what shell you have, consult your local
helpdesk or the equivalent.
(prefix matches do not count and case usually counts) like "En_US"
without the quotes, then you should be okay because you are using a
locale name that should be installed and available in your system.
-In this case, see L<Permanently fixing system locale configuration>.
+In this case, see L<Permanently fixing your system's locale configuration>.
-=head2 Permanently fixing your locale configuration
+=head2 Permanently fixing your system's locale configuration
This is when you see something like:
operating system and its utilities. Note especially that the string
value of C<$!> and the error messages given by external utilities may
be changed by C<LC_MESSAGES>. If you want to have portable error
-codes, use the Errno extension.
+codes, use C<%!>. See L<Errno>.
=head1 SECURITY
=item *
-If the decimal point character in the C<LC_NUMERIC> locale is
-surreptitiously changed from a dot to a comma, C<sprintf("%g",
-0.123456e3)> produces a string result of "123,456". Many people would
-interpret this as one hundred and twenty-three thousand, four hundred
-and fifty-six.
+Some systems are broken in that they allow the "C" locale to be
+overridden by users. If the decimal point character in the
+C<LC_NUMERIC> category of the "C" locale is surreptitiously changed
+from a dot to a comma, C<sprintf("%g", 0.123456e3)> produces a
+string result of "123,456". Many people would interpret this as
+one hundred and twenty-three thousand, four hundred and fifty-six.
=item *
expression match involving C<\w>, C<\W>, C<\s>, or C<\S>; or of
case-mapping with C<\l>, C<\L>,C<\u> or C<\U>.
-=item B<In-memory formatting function> (sprintf()):
-
-Result is tainted if C<use locale> is in effect.
-
=item B<Output formatting functions> (printf() and write()):
Success/failure result is never tainted.