Ability to use "slots/lists" instead of permutation

[hybridherbst]

I find permutations really useful, but right now it's a bit hard to do things like

Shapes on a background | The background is red | The background is green | The shapes are blue | The shapes are white

since of course there's many permutations that don't make sense.

Would be great to have a syntax to define slots, e.g.

<slot1> Shapes on a <slot2> background 
slot1: blue | white
slot2: red | green

Which would generate more reasonable (and less) combinatorial variants.

Thanks!

Example of "useless" permutations:

[lozenge]

Assuming I have understood you correctly, this is actually already an existing feature! Credit goes to @JustOxlamon, who implemented it a few days ago. It's mentioned in the README. Easy to miss, but very powerful to use.

For your example, you could do @(blue|white) shapes on a (red|green) background, which results in 4 prompts. You can add another vertical bar to the end of each if you wanted to also test the absence of each group, resulting in 9 prompts.

[hybridherbst]

Nice, I must have indeed missed that!

[hybridherbst]

Might be worth noting in the UI that the "Advanced > Prompt Matrix" needs to be on for this to work - I guess it might need to be renamed to "Advanced > Enable Prompt Syntax" or something like that.