FMS!

:(str alist co-channel state evisc) => state
Major Section:  ACL2-BUILT-INS

This function is nearly identical to fms; see fms. The only difference is that fms may insert backslash (\) characters when forced to print past the right margin in order to make the output a bit clearer in that case. Use fms! instead if you want to be able to read the forms back in.