Thank you Michael, I'll have a look at Juerd's page as it's the only thing I
haven't yet :)
On Jul 29, 2010, at 6:17 PM, Michael Ludwig wrote:
> Hi Dan,
>
> [Silence “Wide character” warning globally one time]
> Dan Muey schrieb am 29.07.2010 um 16:59 (-0500):
>>
>> I've a situation where a large code base will be outputting "byte
>> strings" and "unicode strings" from a number of sources.
>
> All lumped together? This will likely mean encoding issues.
>
>> I essentially need to do
>> no warnings "utf8";
>
> That's hiding the problem.
>
>> [ -- Problem: Unicode string gives warning -- ]
>
> Sorry, but no, the warning is not the problem: it's an indication to
> the user making him aware of the actual problem, which is printing wide
> characters to a single-byte (narrow) output handle.
>
>> perl -le 'print "Think before you code™ (bytes string)";print "Hello
>> \x{201C}World\x{201D} (Unicode String)";'
>
> perl -CO -le 'print "Hello \x{201C}World\x{201D}";'
>
> See: perldoc perlrun
>
> You need the equivalent of -CO in your script:
>
> binmode STDOUT, ':utf8';
>
>> perl -le 'binmode STDOUT, "utf8";print "Think before you code™ (bytes
>> string)";print "Hello \x{201C}World\x{201D} (Unicode String)";'
>
> You're mungling bytes and Unicode characters together. The result is, of
> course, wrong. Pick either bytes or Unicode as your standard encoding.
> Convert input accordingly.
>
>> Is there any super voo doo that can be done?
>
> The best voodoo is understanding Perl's Unicode handling by reading
> Juerd's pages [1], which have also been included in the docs of current
> Perl versions; so read those as well; but don't read the old docs, they
> do contain some documentation bugs.
>
> You might also want to read the archives of this list to see how I
> managed to make some progress in understanding thanks to the good
> answers I got here.
>
> [1] http://juerd.nl/perl
> --
> Michael Ludwig
