From: Andy Wingo <wingo@pobox.com>
To: Mark H Weaver <mhw@netris.org>
Cc: Mark Polesky <markpolesky@yahoo.com>, 17657-done@debbugs.gnu.org
Subject: bug#17657: pretty-print #:width values above 49 don't work?
Date: Tue, 21 Jun 2016 16:47:20 +0200 [thread overview]
Message-ID: <87lh1yy4xz.fsf@pobox.com> (raw)
In-Reply-To: <87vbsk322v.fsf@yeeloong.lan> (Mark H. Weaver's message of "Sun, 01 Jun 2014 14:40:56 -0400")
Hi :)
On Sun 01 Jun 2014 20:40, Mark H Weaver <mhw@netris.org> writes:
> Mark Polesky <markpolesky@yahoo.com> writes:
>> Neither example below should be line-wrapped, but the second one
>> is.
>
> Our pretty printer, inherited from SLIB and originally written by Marc
> Feeley, uses a great many heuristics to make formatting decisions.
> These heuristics are undocumented and subject to change.
>
> One of its heuristics is that individual expressions shall not be more
> than 49 columns wide. Notice that pretty-print.scm includes the
> following internal definition:
>
> (define max-expr-width 50)
>
> (although in fact the maximum width ends up being 49)
>
>> Is there a workaround?
>
> A couple of years ago I added an undocumented #:max-expr-width keyword
> argument to pretty-print, in order to improve the formatting of
> psyntax-pp.scm. You could use that.
Just pushed some documentation, so this bug is done.
> It would be good to redesign and rewrite our pretty-printer from scratch
> at some point.
Yes!
Andy
prev parent reply other threads:[~2016-06-21 14:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-31 18:24 bug#17657: pretty-print #:width values above 49 don't work? Mark Polesky
2014-06-01 18:40 ` Mark H Weaver
2014-06-03 18:06 ` Mark Polesky
2016-06-21 14:47 ` Andy Wingo [this message]
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