Perhaps I am missing something obvious but I want to be able to take a string from a user and then iterate over each letter. I couldn't see anything in the For Each action that fit.
Is there some way to do this or am I going to have to run it in JavaScript?
Can you tell us the context and the role of the iteration ?
What's the output, in relation to the input string ?
You can use a For Each action with the simplest (single dot) regular expression, but there may be a more direct route to the transformation or effect that you are after.
I am duplicating a workflow that I created in Shortcuts. It asks the user for a word and then opens Freeform and pastes in images that match each letter in the text they entered.