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Is there something akin to `.replace` that works on `TextFieldValue` (takes cursor / selection into account)? I'm trying to have forbidden characters (like @) in my `TextField` so I'm just doing `.replace("@", "")` inside `onValueChange` but this means the cursor will stay on the position of the removed character (i.e. behaves like "insert" key is on). I feel this is simple to solve, but just wanted to check if there's some builtin method I'm missing.

I guess you want to check the `VisualTransformation` and `OffsetMapping`
<https://developer.android.com/reference/kotlin/androidx/compose/ui/text/input/VisualTransformation|https://developer.android.com/reference/kotlin/androidx/compose/ui/text/input/VisualTransformation>

This wouldn't change the value though - just what the use sees. I want to ensure the invalid character(s) never reach my DB / backend.

Then I would pre-process the user’s input before it is persisted or send.

That's sort of what I'm doing - but then either I display the processed input (which is the issue I'm having, cursor position might end up wrong) or I show something different to the user

cursor position is TextFieldValue.selection = TextRange(myPosition)