Returns detailed information about register {regname} as a Dictionary with the following entries: regcontents List of lines contained in register {regname}, like |getreg|({regname}, 1, 1). regtype the type of register {regname}, as in |getregtype()|. isunnamed Boolean flag, v:true if this register is currently pointed to by the unnamed register. points_to for the unnamed register, gives the single letter name of the register currently pointed to (see |quotequote|). For example, after deleting a line with dd, this field will be "1", which is the register that got the deleted text. If {regname} is invalid or not set, an empty Dictionary will be returned. If {regname} is not specified, |v:register| is used. The returned Dictionary can be passed to |setreg()|. In |Vim9-script| {regname} must be one character. Can also be used as a |method|: GetRegname()->getreginfo()