{
   use charnames ":alias" => { FOO => 0x2660 };
   my $pat1 = '\N{FOO}';
   $re1 = qr/$pat1/;
}

{
   use charnames ":alias" => { FOO => 0x2661 };
   my $pat2 = '\N{FOO}';
   $re2 = qr/$pat2/;
}

{
   use charnames ":alias" => { FOO => 0x2662 };
   /$re1$re2/
}

[download]

What should the pattern match? Probably /\N{U+2660}\N{U+2661}/, but the information is not available to qr// at run-time, much less to the m// operator that's not in scope of the relevant directives.

Those problems were resolved by converting \N{NAME} to \N{U+NUM} at compile-time, and throwing an error when presented with \N{NAME} at run-time.

"\N{NAME}" works. qr/\N{NAME}/ works. Others, not so much.

In reply to Re: stuck with a \N{CHAR NAME} problem by ikegami
in thread stuck with a \N{CHAR NAME} problem by amir_e_a

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