Re: difference between [perl] and [calc]

[Larry Leszczynski <larryl@furph.com>]

Hi Kyle -

> The Perl script gets the length of the _uninterpolated_ string.  All I
> can guess is that the interpolate flag is applied differently than I
> thought.  I understood that all MV tags would be interpolated and then
> the resulting string would be "eval"ed in Perl.  I guessed incorrectly. 
> 
> This clears up a lot of small problems I have had over the last couple of
> weeks:
> 
> [perl interpolate=1] != [calc] !!!!!
> 
> So, now I need to go and replace a bunch of [perl] tags with [calc]...
> Sigh.  This is quite annoying as I need to run some [perl] code on
> elements in the 'values' hash, but I need some interpolated values too.

Don't know the answer to the interpolate problem, but you can work around
it using tag_data() to get what you need:

   [perl]
        my $msg = tag_data( 'session', 'ship_message' );
        return length($msg);
   [/perl]

You can get a fair amount of info into perl tags without interpolation,
using things like tag_data(), $Safe{'values'}{'somevar'},
$Safe{'scratch'}{'somevar'}, etc. 


Larry Leszczynski
larryl@furph.com
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