describe-register-1 with yank-excluded-properties=t

[Juri Linkov]

`list-registers' fails with the error "Wrong type argument: listp, t"
when `yank-excluded-properties' is set to t and a register contains
a string with text properties.  `describe-register-1' passes the value
of `yank-excluded-properties' to the function `remove-list-of-text-properties'
which can't handle the value t.  Perhaps, it should use the function
`remove-yank-excluded-properties', but it operates only on a buffer,
not a string.  Another solution is to use `insert-for-yank', but
currently `describe-register-1' doesn't use `insert' functions,
it uses only `princ' functions to print values on standard-output.

-- 
Juri Linkov
http://www.jurta.org/emacs/