For a plugin I’m developing, I want to show a floating window somewhere within the buffer view, but want to work out exactly which rows and columns in the window are already taken up by content in the buffer so that I can place the floating window in a location where it does not obscure the code.

For a plugin I’m building I need an exact copy of the buffer as it’s visible. For this I have written a function that unwraps the lines in the buffer as if they were their own lines.