Re: multilines strings "a la python"

[Algaba]

El 31/01/15 19:48, Ulrich Neumerkel escribió:
> ((I am not sure that this will receive all recipients))
>
> Jose F. Morales:
> > Other Prolog systems support multiline strings also with "..." syntax. Does
> > anyone remember if that is incompatible with ISO Prolog standard? If not,
> > is there any reasonable syntax extension that can be adopted by other
> > Prolog implementations too?
> >
> > (I've included Ulrich Neumerkel in the discussion)
> >
> > On Sat, Jan 31, 2015 at 12:35 PM, Algaba <address@hidden> wrote:
> >
> > > hello
> > >
> > >   Desperately,  I need multilines strings "a la python", something like :
> > >
> > >   a_predicate(""" this is a multiline
> This cannot be conforming Prolog syntax, that is, it cannot be a
> syntax extension (5.5.1) as it interferes with valid Prolog syntax.
> The minimal counterexample is probably:
>
> :- set_prolog_flag(double_quotes,atom).
>
> """+"b. /*
> """*/

I haven't used such example in my life, and probably I won't . If triple 
double quotes is a problem, any other combination ( ''', !!!, {{{) would 
be fine as well.
> which corresponds to
>
> +('',b).
>
> With this extension, valid Prolog text would be interpreted
> differently.
>
> > >   Putting \n\ at the end of each line is a huge nuisance in copy/paste
> > > operations
> I add such text in Emacs with C-x r t \n\ Return
> So spaces are added in lines that happen to be shorter.
Yes, I do create a macro that adds \n\ to the end of the line and then I 
execute it n-times. But it's not nearly as easy as in
python.

greetings
...
algaba