perl-unicode

Re: Unicode aware module

1999-04-22 09:42:57
But that's the problem. A module has to do something to _protect_
itself. And trying to move the problem to the other party, the caller
can't know when it has to turn off utf8 before calling a routine. It
may not even know that a sensitive routine was called.

Isn't this why any pragma that changes _semantics_ are scoped?

Then there is the question of what is character oriented and what is
not. And will it change over the life of perl.

        $foo = substring($exe, 32, 15); # Character or Byte?

<chaim>

"DH" == Dick Hardt <DickH(_at_)ActiveState(_dot_)com> writes:

DH> At 07:43 AM 4/21/99 , Chaim Frenkel wrote:
Why would this action at a distance _not_ break code.

parent turns on utf8
child attempts to process a binary string.

DH> If the child thinks of it as binary data, then it would not be doing any
DH> character oriented operations on it, hence it should not fail.

DH> If the child is using character oriented operations assuming it is working
DH> with an array of bytes, then it would need to save the state of the utf8 
mode.

DH> my $utf8state = <<utf8_state_flag>>

DH> no utf8 if $utf8state;

DH> ... do work with character operators as though binary ...

DH> use utf8 if $utf8state;

DH> -- Dick


-- 
Chaim Frenkel                                        Nonlinear Knowledge, Inc.
chaimf(_at_)pobox(_dot_)com                                            
+1-718-236-0183

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