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Feature proposal #9000
closedImplement known substitution missing protection
Description
When it comes to data, request, post, get, and variable substitutions we KNOW their prefix (e.g. data1_, var1_, get_). If trying to substitution in such information, but that information doesn't exist (e.g. missing GET variable) then this should force it to NULL otherwise you end up with literal [get_name] being inserted.
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