Cannot use alternative vertical bar or logical negation sign

[Jean-Luc-Picard-2021]

I get this in Scryer Prolog:

$ target/release/scryer-prolog -v
"v0.9.0-181-g8e9302ea"
$ target/release/scryer-prolog
?- X = "foo¦bar".
   error(syntax_error(missing_quote),read_term/3:0).
?- [user].
:- op(1100,xfy,¦).
   error(syntax_error(unexpected_char),read_term/3:1).
?-

Whereas in SWI-Prolog I can easily do:

?- X = "foo¦bar".
X = "foo¦bar".

?- [user].
:- op(1100,xfy,¦).
true.

?- X = (foo¦bar), write_canonical(X), nl.
¦(foo,bar)
X = (foo¦bar).

[UWN]

@mthom ,this seems to be closable. I like the more restricted form as it is now:

?- X = "foo¦bar".
   X = "foo¦bar".
?- op(1100,xfy,¦).
   error(syntax_error(unexpected_char),read_term/3:0) % nice
|   syntax_error(_).   % any syntax error will do
?- op(1100,xfy,'¦').
   true.
?- X=1¦2.
   error(syntax_error(unexpected_char),read_term/3:0) % nice
|  syntax_error(_).   % any syntax error will do
?- X=(1'¦'2).
   X = (1'¦'2).