Re: FORMAT ~<...~:@> PUZZLE

"Geoffrey Summerhayes" <sumrnot@xxxxxxxxxxx> writes:

> Vladimir Zolotykh wrote:
>
>> What's wrong? I'd expect that calls with n less that 50 (e.g 20, 30, 40)
>> would also print _formatted_ paragraph. Where was I wrong?
>
> Try:
>
> (format t "~@<~{~A~^ ~:_~}~:@>" a)))
>
> CL-USER 2 > (foo 10)
> Whan
> you're
> lost in
> the Wild,
> and
> you're
> scared as
> a child,
> And Death
> looks you
> bang in
> the eye,
> NIL

What's the value of *print-miser-width*? Because if I have it set to
something non NIL that doesn't help. In fact it makes it worse (see below).

>From the docs for pprint-newline:

Talking about :fill which is what you get with ~:_

"if miser style is in effect, fill-style conditional newlines act
like linear-style conditional newlines."

And talking about :linear style:

"line breaks are either inserted at every linear-style conditional
newline in a logical block or at none of them."

Which is what I see when the thing is printed in miser-mode:

CL-USER> *print-miser-width*
40
CL-USER> (foo 10)
Whan

you're

lost

in

the

Wild,

and

you're

scared

as

a

child,

And

Death

looks

you

bang

in

the

eye,
NIL
CL-USER>
--
Peter Seibel * peter@xxxxxxxxxxxxxxx
Gigamonkeys Consulting * http://www.gigamonkeys.com/
Practical Common Lisp * http://www.gigamonkeys.com/book/
.

Relevant Pages

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