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Clarify the documentation about PL/Perl nested subroutines, per Josh
Berkus.
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<!-- $PostgreSQL: pgsql/doc/src/sgml/plperl.sgml,v 2.69 2008/04/10 15:16:46 alvherre Exp $ -->
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<!-- $PostgreSQL: pgsql/doc/src/sgml/plperl.sgml,v 2.70 2009/08/15 00:33:12 petere Exp $ -->
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<chapter id="plperl">
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<title>PL/Perl - Perl Procedural Language</title>
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@ -72,8 +72,10 @@ $$ LANGUAGE plperl;
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they refer to lexical variables in the enclosing scope. Because a PL/Perl
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function is wrapped in a subroutine, any named subroutine you create will
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be nested. In general, it is far safer to create anonymous subroutines
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which you call via a coderef. See the <literal>perldiag</literal>
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man page for more details.
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which you call via a coderef. See <literal>Variable "%s" will not stay shared</literal>
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and <literal>Variable "%s" is not available</literal> in the
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<citerefentry><refentrytitle>perldiag</></citerefentry> man page for more
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details.
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</para>
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</note>
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