This will do what you want in the most literal fashion:

<$button>alpha mail
<$list filter="[prefix[mytid]]">
  <$action-deletetiddler $tiddler=<<currentTiddler>>/>
</$list>

<$list filter="A B C D" variable="v1">
<$list filter="[<v1>lowercase[]]" variable="v2">
  <$action-createtiddler $basetitle="mytid" v1=<<v1>> v2=<<v2>> />
</$list>
</$list>
</$button>


On Saturday, December 26, 2020 at 8:22:31 AM UTC-8 Erwan wrote:

>
> Hi everyone,
>
> I'm trying to create several tiddlers which contain two fields coming from 
> two different filters.
>
> Example : given the lists "A B C D" and "a b c d" I would like to obtain 4 
> tiddlers where each contains the nth value from both lists: 
>
> tiddler1 has var1=A var2=a
> tiddler2 has var1=B var2=b
> tiddler3 has var1=C var2=c
> tiddler4 has var1=D var2=d
>
> This is my attempt:
>
> <$button>
>
> create the tiddlers with parallel filters
>
> <$list filter="[prefix[mytid]]">
>   <$action-deletetiddler $tiddler=<<currentTiddler>>/>
> </$list>
> <$list filter="A B C D" variable="v1">
>   <$action-createtiddler $basetitle="mytid" v1=<<v1>> />
> </$list>
> <$list filter="a b c d" variable="v2">
>   <$list filter="[prefix[mytid]!has[v2]]" variable="t">
>           <$action-setfield $tiddler=<<t>> v2=<<v2>>/>
>   </$list>
> </$list>
> </$button>
>
> My great hopes for this solution to work turned out to be misplaced ;)
>
> Is there a way to achieve this lind of "parallel matching"?
>
> Thanks in advance!
> Erwan
>
>

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