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perl
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__NAME__ purpose
evaluate embedded Perl code
__END__
__NAME__ synopsis
<row>
<entry>
<group choice='plain'>
<arg choice='plain'>tables</arg>
<arg choice='plain'>table</arg>
</group>
</entry>
<entry>
Yes
</entry>
<entry>
No
</entry>
<entry>
<!-- DFL -->
</entry>
<entry>
<!-- DSC -->
</entry>
</row>
<row>
<entry>
subs
</entry>
<entry>
</entry>
<entry>
</entry>
<entry>
0
</entry>
<entry>
imports subroutines defined by &conf-Sub;
</entry>
</row>
<row>
<entry>
short_errors
</entry>
<entry>
</entry>
<entry>
</entry>
<entry>
0
</entry>
<entry>
log error message only
</entry>
</row>
<row>
<entry>
no_return
</entry>
<entry>
</entry>
<entry>
</entry>
<entry>
0
</entry>
<entry>
store result into &glos-session; key <literal>mv_perl_result</literal> instead of returning it
</entry>
</row>
&TAG_CONTAINER;
__END__
__NAME__ description
Evaluate embedded Perl code and return the result.
__END__
__NAME__ see also
calc, mvasp
__END__
__NAME__ notes
<!-- if you change this, also change the same in refs/calc -->
The &tag-calc; tag is lower-overhead variant of &tag-perl;, because it
does not accept arguments, does not try to interpolate tag body, does not
pre-open any database tables, and it doesn't do any extra wrapping.
</para><para>
The &tag-calc; tag will remember variable values inside the page, so you
can do the equivalent of a memory store and memory recall for a loop. In
other words, variables you initialize or set in one &tag-calc; block are
also visible in all further &tag-calc; blocks on the same page.
</para><para>
There is no reason to ever use this tag inside &tag-perl; or &tag-mvasp;.
__END__