[Zope] sequence-number math

[Ulrich Wisser]

Hello hpinson,

use the prefix attribute of dtml-in, e.g

<dtml-in sqlQuery prefix=seq>
   <dtml-var "seq_number-1"> is equal <dtml-var seq_index>
   or <dtml-var sequence-index>
</dtml-in>

Hope it helps

Ulrich
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