Re: Escapes in Backquoted Strings

Jan Burse <[email protected]> Mon, 28 Mar 2011 10:14:26 +0200

Newsgroups	gmane.comp.gnu.prolog.bugs
Message-ID	<[email protected]>

Ok, thank you. So no bug at all, great!

Daniel Diaz schrieb:
> Hi,
>
> can you give me the exact error message for X = `\` ?
> If it is
>
>     | ?- X = `\`.
>     uncaught exception: error(syntax_error('user_input:1 (char:8)
>     expression expected or previous operator needs brackets'),read_term/3)
>
> it is due to the fact \ is also an operator and thus needs to be put 
> inside ( ) as an argument of another operator (here it is =). Use instead:
>
>     | ?- X = (`\`).
>
>     X = \
>
> Daniel

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